#!/usr/bin/env perl # mysqltuner.pl - Version 1.7.15 # High Performance MySQL Tuning Script # Copyright (C) 2006-2018 Major Hayden - major@mhtx.net # # For the latest updates, please visit http://mysqltuner.com/ # Git repository available at https://github.com/major/MySQLTuner-perl # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . # # This project would not be possible without help from: # Matthew Montgomery Paul Kehrer Dave Burgess # Jonathan Hinds Mike Jackson Nils Breunese # Shawn Ashlee Luuk Vosslamber Ville Skytta # Trent Hornibrook Jason Gill Mark Imbriaco # Greg Eden Aubin Galinotti Giovanni Bechis # Bill Bradford Ryan Novosielski Michael Scheidell # Blair Christensen Hans du Plooy Victor Trac # Everett Barnes Tom Krouper Gary Barrueto # Simon Greenaway Adam Stein Isart Montane # Baptiste M. Cole Turner Major Hayden # Joe Ashcraft Jean-Marie Renouard Christian Loos # Julien Francoz # # Inspired by Matthew Montgomery's tuning-primer.sh script: # http://www.day32.com/MySQL/ # package main; use 5.005; use strict; use warnings; use diagnostics; use File::Spec; use Getopt::Long; use Pod::Usage; use File::Basename; use Cwd 'abs_path'; use Data::Dumper; $Data::Dumper::Pair = " : "; # for which() #use Env; # Set up a few variables for use in the script my $tunerversion = "1.7.15"; my ( @adjvars, @generalrec ); # Set defaults my %opt = ( "silent" => 0, "nobad" => 0, "nogood" => 0, "noinfo" => 0, "debug" => 0, "nocolor" => ( !-t STDOUT ), "color" => 0, "forcemem" => 0, "forceswap" => 0, "host" => 0, "socket" => 0, "port" => 0, "user" => 0, "pass" => 0, "password" => 0, "ssl-ca" => 0, "skipsize" => 0, "checkversion" => 0, "updateversion" => 0, "buffers" => 0, "passwordfile" => 0, "bannedports" => '', "maxportallowed" => 0, "outputfile" => 0, "noprocess" => 0, "dbstat" => 0, "nodbstat" => 0, "tbstat" => 0, "notbstat" => 0, "idxstat" => 0, "noidxstat" => 0, "sysstat" => 0, "nosysstat" => 0, "pfstat" => 0, "nopfstat" => 0, "skippassword" => 0, "noask" => 0, "template" => 0, "json" => 0, "prettyjson" => 0, "reportfile" => 0, "verbose" => 0, "defaults-file" => '', ); # Gather the options from the command line GetOptions( \%opt, 'nobad', 'nogood', 'noinfo', 'debug', 'nocolor', 'forcemem=i', 'forceswap=i', 'host=s', 'socket=s', 'port=i', 'user=s', 'pass=s', 'skipsize', 'checkversion', 'mysqladmin=s', 'mysqlcmd=s', 'help', 'buffers', 'skippassword', 'passwordfile=s', 'outputfile=s', 'silent', 'noask', 'json', 'prettyjson', 'template=s', 'reportfile=s', 'cvefile=s', 'bannedports=s', 'updateversion', 'maxportallowed=s', 'verbose', 'password=s', 'passenv=s', 'userenv=s', 'defaults-file=s', 'ssl-ca=s', 'color', 'noprocess', 'dbstat', 'nodbstat', 'tbstat', 'notbstat', 'sysstat', 'nosysstat', 'pfstat', 'nopfstat', 'idxstat', 'noidxstat', ) or pod2usage( -exitval => 1, -verbose => 99, -sections => [ "NAME", "IMPORTANT USAGE GUIDELINES", "CONNECTION AND AUTHENTICATION", "PERFORMANCE AND REPORTING OPTIONS", "OUTPUT OPTIONS" ] ); if ( defined $opt{'help'} && $opt{'help'} == 1 ) { pod2usage( -exitval => 0, -verbose => 99, -sections => [ "NAME", "IMPORTANT USAGE GUIDELINES", "CONNECTION AND AUTHENTICATION", "PERFORMANCE AND REPORTING OPTIONS", "OUTPUT OPTIONS" ] ); } my $devnull = File::Spec->devnull(); my $basic_password_files = ( $opt{passwordfile} eq "0" ) ? abs_path( dirname(__FILE__) ) . "/basic_passwords.txt" : abs_path( $opt{passwordfile} ); # Username from envvar if ( exists $opt{userenv} && exists $ENV{ $opt{userenv} } ) { $opt{user} = $ENV{ $opt{userenv} }; } # Related to password option if ( exists $opt{passenv} && exists $ENV{ $opt{passenv} } ) { $opt{pass} = $ENV{ $opt{passenv} }; } $opt{pass} = $opt{password} if ( $opt{pass} eq 0 and $opt{password} ne 0 ); # for RPM distributions $basic_password_files = "/usr/share/mysqltuner/basic_passwords.txt" unless -f "$basic_password_files"; # check if we need to enable verbose mode if ( $opt{verbose} ) { $opt{checkversion} = 1; #Check for updates to MySQLTuner $opt{dbstat} = 1; #Print database information $opt{tbstat} = 1; #Print database information $opt{idxstat} = 1; #Print index information $opt{sysstat} = 1; #Print index information $opt{buffers} = 1; #Print global and per-thread buffer values $opt{pfstat} = 1; #Print performance schema info. $opt{cvefile} = 'vulnerabilities.csv'; #CVE File for vulnerability checks } $opt{nocolor} = 1 if defined( $opt{outputfile} ); $opt{tbstat} = 0 if ( $opt{notbstat} == 1 ); # Don't Print table information $opt{dbstat} = 0 if ( $opt{nodbstat} == 1 ); # Don't Print database information $opt{noprocess} = 0 if ( $opt{noprocess} == 1 ); # Don't Print process information $opt{sysstat} = 0 if ( $opt{nosysstat} == 1 ); # Don't Print sysstat information $opt{pfstat} = 0 if ( $opt{nopfstat} == 1 ); # Don't Print performance schema information $opt{idxstat} = 0 if ( $opt{noidxstat} == 1 ); # Don't Print index information # for RPM distributions $opt{cvefile} = "/usr/share/mysqltuner/vulnerabilities.csv" unless ( defined $opt{cvefile} and -f "$opt{cvefile}" ); $opt{cvefile} = '' unless -f "$opt{cvefile}"; $opt{cvefile} = './vulnerabilities.csv' if -f './vulnerabilities.csv'; $opt{'bannedports'} = '' unless defined( $opt{'bannedports'} ); my @banned_ports = split ',', $opt{'bannedports'}; # my $outputfile = undef; $outputfile = abs_path( $opt{outputfile} ) unless $opt{outputfile} eq "0"; my $fh = undef; open( $fh, '>', $outputfile ) or die("Fail opening $outputfile") if defined($outputfile); $opt{nocolor} = 1 if defined($outputfile); $opt{nocolor} = 1 unless ( -t STDOUT ); $opt{nocolor} = 0 if ( $opt{color} == 1 ); # Setting up the colors for the print styles my $me = `whoami`; $me =~ s/\n//g; # Setting up the colors for the print styles my $good = ( $opt{nocolor} == 0 ) ? "[\e[0;32mOK\e[0m]" : "[OK]"; my $bad = ( $opt{nocolor} == 0 ) ? "[\e[0;31m!!\e[0m]" : "[!!]"; my $info = ( $opt{nocolor} == 0 ) ? "[\e[0;34m--\e[0m]" : "[--]"; my $deb = ( $opt{nocolor} == 0 ) ? "[\e[0;31mDG\e[0m]" : "[DG]"; my $cmd = ( $opt{nocolor} == 0 ) ? "\e[1;32m[CMD]($me)" : "[CMD]($me)"; my $end = ( $opt{nocolor} == 0 ) ? "\e[0m" : ""; # Checks for supported or EOL'ed MySQL versions my ( $mysqlvermajor, $mysqlverminor, $mysqlvermicro ); # Super structure containing all information my %result; $result{'MySQLTuner'}{'version'} = $tunerversion; $result{'MySQLTuner'}{'options'} = \%opt; # Functions that handle the print styles sub prettyprint { print $_[0] . "\n" unless ( $opt{'silent'} or $opt{'json'} ); print $fh $_[0] . "\n" if defined($fh); } sub goodprint { prettyprint $good. " " . $_[0] unless ( $opt{nogood} == 1 ); } sub infoprint { prettyprint $info. " " . $_[0] unless ( $opt{noinfo} == 1 ); } sub badprint { prettyprint $bad. " " . $_[0] unless ( $opt{nobad} == 1 ); } sub debugprint { prettyprint $deb. " " . $_[0] unless ( $opt{debug} == 0 ); } sub redwrap { return ( $opt{nocolor} == 0 ) ? "\e[0;31m" . $_[0] . "\e[0m" : $_[0]; } sub greenwrap { return ( $opt{nocolor} == 0 ) ? "\e[0;32m" . $_[0] . "\e[0m" : $_[0]; } sub cmdprint { prettyprint $cmd. " " . $_[0] . $end; } sub infoprintml { for my $ln (@_) { $ln =~ s/\n//g; infoprint "\t$ln"; } } sub infoprintcmd { cmdprint "@_"; infoprintml grep { $_ ne '' and $_ !~ /^\s*$/ } `@_ 2>&1`; } sub subheaderprint { my $tln = 100; my $sln = 8; my $ln = length("@_") + 2; prettyprint " "; prettyprint "-" x $sln . " @_ " . "-" x ( $tln - $ln - $sln ); } sub infoprinthcmd { subheaderprint "$_[0]"; infoprintcmd "$_[1]"; } # Calculates the number of physical cores considering HyperThreading sub cpu_cores { my $cntCPU = `awk -F: '/^core id/ && !P[\$2] { CORES++; P[\$2]=1 }; /^physical id/ && !N[\$2] { CPUs++; N[\$2]=1 }; END { print CPUs*CORES }' /proc/cpuinfo`; return ( $cntCPU == 0 ? `nproc` : $cntCPU ); } # Calculates the parameter passed in bytes, then rounds it to one decimal place sub hr_bytes { my $num = shift; return "0B" unless defined($num); return "0B" if $num eq "NULL"; if ( $num >= ( 1024**3 ) ) { #GB return sprintf( "%.1f", ( $num / ( 1024**3 ) ) ) . "G"; } elsif ( $num >= ( 1024**2 ) ) { #MB return sprintf( "%.1f", ( $num / ( 1024**2 ) ) ) . "M"; } elsif ( $num >= 1024 ) { #KB return sprintf( "%.1f", ( $num / 1024 ) ) . "K"; } else { return $num . "B"; } } sub hr_raw { my $num = shift; return "0" unless defined($num); return "0" if $num eq "NULL"; if ( $num =~ /^(\d+)G$/ ) { return $1 * 1024 * 1024 * 1024; } if ( $num =~ /^(\d+)M$/ ) { return $1 * 1024 * 1024; } if ( $num =~ /^(\d+)K$/ ) { return $1 * 1024; } if ( $num =~ /^(\d+)$/ ) { return $1; } return $num; } # Calculates the parameter passed in bytes, then rounds it to the nearest integer sub hr_bytes_rnd { my $num = shift; return "0B" unless defined($num); return "0B" if $num eq "NULL"; if ( $num >= ( 1024**3 ) ) { #GB return int( ( $num / ( 1024**3 ) ) ) . "G"; } elsif ( $num >= ( 1024**2 ) ) { #MB return int( ( $num / ( 1024**2 ) ) ) . "M"; } elsif ( $num >= 1024 ) { #KB return int( ( $num / 1024 ) ) . "K"; } else { return $num . "B"; } } # Calculates the parameter passed to the nearest power of 1000, then rounds it to the nearest integer sub hr_num { my $num = shift; if ( $num >= ( 1000**3 ) ) { # Billions return int( ( $num / ( 1000**3 ) ) ) . "B"; } elsif ( $num >= ( 1000**2 ) ) { # Millions return int( ( $num / ( 1000**2 ) ) ) . "M"; } elsif ( $num >= 1000 ) { # Thousands return int( ( $num / 1000 ) ) . "K"; } else { return $num; } } # Calculate Percentage sub percentage { my $value = shift; my $total = shift; $total = 0 unless defined $total; $total = 0 if $total eq "NULL"; return 100, 00 if $total == 0; return sprintf( "%.2f", ( $value * 100 / $total ) ); } # Calculates uptime to display in a more attractive form sub pretty_uptime { my $uptime = shift; my $seconds = $uptime % 60; my $minutes = int( ( $uptime % 3600 ) / 60 ); my $hours = int( ( $uptime % 86400 ) / (3600) ); my $days = int( $uptime / (86400) ); my $uptimestring; if ( $days > 0 ) { $uptimestring = "${days}d ${hours}h ${minutes}m ${seconds}s"; } elsif ( $hours > 0 ) { $uptimestring = "${hours}h ${minutes}m ${seconds}s"; } elsif ( $minutes > 0 ) { $uptimestring = "${minutes}m ${seconds}s"; } else { $uptimestring = "${seconds}s"; } return $uptimestring; } # Retrieves the memory installed on this machine my ( $physical_memory, $swap_memory, $duflags ); sub memerror { badprint "Unable to determine total memory/swap; use '--forcemem' and '--forceswap'"; exit 1; } sub os_setup { my $os = `uname`; $duflags = ( $os =~ /Linux/ ) ? '-b' : ''; if ( $opt{'forcemem'} > 0 ) { $physical_memory = $opt{'forcemem'} * 1048576; infoprint "Assuming $opt{'forcemem'} MB of physical memory"; if ( $opt{'forceswap'} > 0 ) { $swap_memory = $opt{'forceswap'} * 1048576; infoprint "Assuming $opt{'forceswap'} MB of swap space"; } else { $swap_memory = 0; badprint "Assuming 0 MB of swap space (use --forceswap to specify)"; } } else { if ( $os =~ /Linux|CYGWIN/ ) { $physical_memory = `grep -i memtotal: /proc/meminfo | awk '{print \$2}'` or memerror; $physical_memory *= 1024; $swap_memory = `grep -i swaptotal: /proc/meminfo | awk '{print \$2}'` or memerror; $swap_memory *= 1024; } elsif ( $os =~ /Darwin/ ) { $physical_memory = `sysctl -n hw.memsize` or memerror; $swap_memory = `sysctl -n vm.swapusage | awk '{print \$3}' | sed 's/\..*\$//'` or memerror; } elsif ( $os =~ /NetBSD|OpenBSD|FreeBSD/ ) { $physical_memory = `sysctl -n hw.physmem` or memerror; if ( $physical_memory < 0 ) { $physical_memory = `sysctl -n hw.physmem64` or memerror; } $swap_memory = `swapctl -l | grep '^/' | awk '{ s+= \$2 } END { print s }'` or memerror; } elsif ( $os =~ /BSD/ ) { $physical_memory = `sysctl -n hw.realmem` or memerror; $swap_memory = `swapinfo | grep '^/' | awk '{ s+= \$2 } END { print s }'`; } elsif ( $os =~ /SunOS/ ) { $physical_memory = `/usr/sbin/prtconf | grep Memory | cut -f 3 -d ' '` or memerror; chomp($physical_memory); $physical_memory = $physical_memory * 1024 * 1024; } elsif ( $os =~ /AIX/ ) { $physical_memory = `lsattr -El sys0 | grep realmem | awk '{print \$2}'` or memerror; chomp($physical_memory); $physical_memory = $physical_memory * 1024; $swap_memory = `lsps -as | awk -F"(MB| +)" '/MB /{print \$2}'` or memerror; chomp($swap_memory); $swap_memory = $swap_memory * 1024 * 1024; } elsif ( $os =~ /windows/i ) { $physical_memory = `wmic ComputerSystem get TotalPhysicalMemory | perl -ne "chomp; print if /[0-9]+/;"` or memerror; $swap_memory = `wmic OS get FreeVirtualMemory | perl -ne "chomp; print if /[0-9]+/;"` or memerror; } } debugprint "Physical Memory: $physical_memory"; debugprint "Swap Memory: $swap_memory"; chomp($physical_memory); chomp($swap_memory); chomp($os); $result{'OS'}{'OS Type'} = $os; $result{'OS'}{'Physical Memory'}{'bytes'} = $physical_memory; $result{'OS'}{'Physical Memory'}{'pretty'} = hr_bytes($physical_memory); $result{'OS'}{'Swap Memory'}{'bytes'} = $swap_memory; $result{'OS'}{'Swap Memory'}{'pretty'} = hr_bytes($swap_memory); $result{'OS'}{'Other Processes'}{'bytes'} = get_other_process_memory(); $result{'OS'}{'Other Processes'}{'pretty'} = hr_bytes( get_other_process_memory() ); } sub get_http_cli { my $httpcli = which( "curl", $ENV{'PATH'} ); chomp($httpcli); if ($httpcli) { return $httpcli; } $httpcli = which( "wget", $ENV{'PATH'} ); chomp($httpcli); if ($httpcli) { return $httpcli; } return ""; } # Checks for updates to MySQLTuner sub validate_tuner_version { if ( $opt{'checkversion'} eq 0 and $opt{'updateversion'} eq 0 ) { print "\n" unless ( $opt{'silent'} or $opt{'json'} ); infoprint "Skipped version check for MySQLTuner script"; return; } my $update; my $url = "https://raw.githubusercontent.com/major/MySQLTuner-perl/master/mysqltuner.pl"; my $httpcli = get_http_cli(); if ( $httpcli =~ /curl$/ ) { debugprint "$httpcli is available."; debugprint "$httpcli -m 3 -silent '$url' 2>/dev/null | grep 'my \$tunerversion'| cut -d\\\" -f2"; $update = `$httpcli -m 3 -silent '$url' 2>/dev/null | grep 'my \$tunerversion'| cut -d\\\" -f2`; chomp($update); debugprint "VERSION: $update"; compare_tuner_version($update); return; } if ( $httpcli =~ /wget$/ ) { debugprint "$httpcli is available."; debugprint "$httpcli -e timestamping=off -t 1 -T 3 -O - '$url' 2>$devnull| grep 'my \$tunerversion'| cut -d\\\" -f2"; $update = `$httpcli -e timestamping=off -t 1 -T 3 -O - '$url' 2>$devnull| grep 'my \$tunerversion'| cut -d\\\" -f2`; chomp($update); compare_tuner_version($update); return; } debugprint "curl and wget are not available."; infoprint "Unable to check for the latest MySQLTuner version"; infoprint "Using --pass and --password option is insecure during MySQLTuner execution(Password disclosure)" if ( defined( $opt{'pass'} ) ); } # Checks for updates to MySQLTuner sub update_tuner_version { if ( $opt{'updateversion'} eq 0 ) { badprint "Skipped version update for MySQLTuner script"; print "\n" unless ( $opt{'silent'} or $opt{'json'} ); return; } my $update; my $url = "https://raw.githubusercontent.com/major/MySQLTuner-perl/master/"; my @scripts = ( "mysqltuner.pl", "basic_passwords.txt", "vulnerabilities.csv" ); my $totalScripts = scalar(@scripts); my $receivedScripts = 0; my $httpcli = get_http_cli(); foreach my $script (@scripts) { if ( $httpcli =~ /curl$/ ) { debugprint "$httpcli is available."; debugprint "$httpcli --connect-timeout 3 '$url$script' 2>$devnull > $script"; $update = `$httpcli --connect-timeout 3 '$url$script' 2>$devnull > $script`; chomp($update); debugprint "$script updated: $update"; if ( -s $script eq 0 ) { badprint "Couldn't update $script"; } else { ++$receivedScripts; debugprint "$script updated: $update"; } } elsif ( $httpcli =~ /wget$/ ) { debugprint "$httpcli is available."; debugprint "$httpcli -qe timestamping=off -t 1 -T 3 -O $script '$url$script'"; $update = `$httpcli -qe timestamping=off -t 1 -T 3 -O $script '$url$script'`; chomp($update); if ( -s $script eq 0 ) { badprint "Couldn't update $script"; } else { ++$receivedScripts; debugprint "$script updated: $update"; } } else { debugprint "curl and wget are not available."; infoprint "Unable to check for the latest MySQLTuner version"; } } if ( $receivedScripts eq $totalScripts ) { goodprint "Successfully updated MySQLTuner script"; } else { badprint "Couldn't update MySQLTuner script"; } #exit 0; } sub compare_tuner_version { my $remoteversion = shift; debugprint "Remote data: $remoteversion"; #exit 0; if ( $remoteversion ne $tunerversion ) { badprint "There is a new version of MySQLTuner available($remoteversion)"; update_tuner_version(); return; } goodprint "You have the latest version of MySQLTuner($tunerversion)"; return; } # Checks to see if a MySQL login is possible my ( $mysqllogin, $doremote, $remotestring, $mysqlcmd, $mysqladmincmd ); my $osname = $^O; if ( $osname eq 'MSWin32' ) { eval { require Win32; } or last; $osname = Win32::GetOSName(); infoprint "* Windows OS($osname) is not fully supported.\n"; #exit 1; } sub mysql_setup { $doremote = 0; $remotestring = ''; if ( $opt{mysqladmin} ) { $mysqladmincmd = $opt{mysqladmin}; } else { $mysqladmincmd = which( "mysqladmin", $ENV{'PATH'} ); } chomp($mysqladmincmd); if ( !-e $mysqladmincmd && $opt{mysqladmin} ) { badprint "Unable to find the mysqladmin command you specified: " . $mysqladmincmd . ""; exit 1; } elsif ( !-e $mysqladmincmd ) { badprint "Couldn't find mysqladmin in your \$PATH. Is MySQL installed?"; exit 1; } if ( $opt{mysqlcmd} ) { $mysqlcmd = $opt{mysqlcmd}; } else { $mysqlcmd = which( "mysql", $ENV{'PATH'} ); } chomp($mysqlcmd); if ( !-e $mysqlcmd && $opt{mysqlcmd} ) { badprint "Unable to find the mysql command you specified: " . $mysqlcmd . ""; exit 1; } elsif ( !-e $mysqlcmd ) { badprint "Couldn't find mysql in your \$PATH. Is MySQL installed?"; exit 1; } $mysqlcmd =~ s/\n$//g; my $mysqlclidefaults = `$mysqlcmd --print-defaults`; debugprint "MySQL Client: $mysqlclidefaults"; if ( $mysqlclidefaults =~ /auto-vertical-output/ ) { badprint "Avoid auto-vertical-output in configuration file(s) for MySQL like"; exit 1; } debugprint "MySQL Client: $mysqlcmd"; $opt{port} = ( $opt{port} eq 0 ) ? 3306 : $opt{port}; # Are we being asked to connect via a socket? if ( $opt{socket} ne 0 ) { $remotestring = " -S $opt{socket} -P $opt{port}"; } # Are we being asked to connect to a remote server? if ( $opt{host} ne 0 ) { chomp( $opt{host} ); # If we're doing a remote connection, but forcemem wasn't specified, we need to exit if ( $opt{'forcemem'} eq 0 && ( $opt{host} ne "127.0.0.1" ) && ( $opt{host} ne "localhost" ) ) { badprint "The --forcemem option is required for remote connections"; exit 1; } infoprint "Performing tests on $opt{host}:$opt{port}"; $remotestring = " -h $opt{host} -P $opt{port}"; if ( ( $opt{host} ne "127.0.0.1" ) && ( $opt{host} ne "localhost" ) ) { $doremote = 1; } } else { $opt{host} = '127.0.0.1'; } if ( $opt{'ssl-ca'} ne 0 ) { if ( -e -r -f $opt{'ssl-ca'} ) { $remotestring .= " --ssl-ca=$opt{'ssl-ca'}"; infoprint "Will connect using ssl public key passed on the command line"; return 1; } else { badprint "Attempted to use passed ssl public key, but it was not found or could not be read"; exit 1; } } # Did we already get a username without password on the command line? if ( $opt{user} ne 0 and $opt{pass} eq 0 ) { $mysqllogin = "-u $opt{user} " . $remotestring; my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { goodprint "Logged in using credentials passed on the command line"; return 1; } else { badprint "Attempted to use login credentials, but they were invalid"; exit 1; } } # Did we already get a username and password passed on the command line? if ( $opt{user} ne 0 and $opt{pass} ne 0 ) { $mysqllogin = "-u $opt{user} -p'$opt{pass}'" . $remotestring; my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { goodprint "Logged in using credentials passed on the command line"; return 1; } else { badprint "Attempted to use login credentials, but they were invalid"; exit 1; } } my $svcprop = which( "svcprop", $ENV{'PATH'} ); if ( substr( $svcprop, 0, 1 ) =~ "/" ) { # We are on solaris ( my $mysql_login = `svcprop -p quickbackup/username svc:/network/mysql-quickbackup:default` ) =~ s/\s+$//; ( my $mysql_pass = `svcprop -p quickbackup/password svc:/network/mysql-quickbackup:default` ) =~ s/\s+$//; if ( substr( $mysql_login, 0, 7 ) ne "svcprop" ) { # mysql-quickbackup is installed $mysqllogin = "-u $mysql_login -p$mysql_pass"; my $loginstatus = `mysqladmin $mysqllogin ping 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { goodprint "Logged in using credentials from mysql-quickbackup."; return 1; } else { badprint "Attempted to use login credentials from mysql-quickbackup, but they failed."; exit 1; } } } elsif ( -r "/etc/psa/.psa.shadow" and $doremote == 0 ) { # It's a Plesk box, use the available credentials $mysqllogin = "-u admin -p`cat /etc/psa/.psa.shadow`"; my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`; unless ( $loginstatus =~ /mysqld is alive/ ) { # Plesk 10+ $mysqllogin = "-u admin -p`/usr/local/psa/bin/admin --show-password`"; $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`; unless ( $loginstatus =~ /mysqld is alive/ ) { badprint "Attempted to use login credentials from Plesk and Plesk 10+, but they failed."; exit 1; } } } elsif ( -r "/usr/local/directadmin/conf/mysql.conf" and $doremote == 0 ) { # It's a DirectAdmin box, use the available credentials my $mysqluser = `cat /usr/local/directadmin/conf/mysql.conf | egrep '^user=.*'`; my $mysqlpass = `cat /usr/local/directadmin/conf/mysql.conf | egrep '^passwd=.*'`; $mysqluser =~ s/user=//; $mysqluser =~ s/[\r\n]//; $mysqlpass =~ s/passwd=//; $mysqlpass =~ s/[\r\n]//; $mysqllogin = "-u $mysqluser -p$mysqlpass"; my $loginstatus = `mysqladmin ping $mysqllogin 2>&1`; unless ( $loginstatus =~ /mysqld is alive/ ) { badprint "Attempted to use login credentials from DirectAdmin, but they failed."; exit 1; } } elsif ( -r "/etc/mysql/debian.cnf" and $doremote == 0 and $opt{'defaults-file'} eq '' ) { # We have a Debian maintenance account, use it $mysqllogin = "--defaults-file=/etc/mysql/debian.cnf"; my $loginstatus = `$mysqladmincmd $mysqllogin ping 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { goodprint "Logged in using credentials from Debian maintenance account."; return 1; } else { badprint "Attempted to use login credentials from Debian maintenance account, but they failed."; exit 1; } } elsif ( $opt{'defaults-file'} ne '' and -r "$opt{'defaults-file'}" ) { # defaults-file debugprint "defaults file detected: $opt{'defaults-file'}"; my $mysqlclidefaults = `$mysqlcmd --print-defaults`; debugprint "MySQL Client Default File: $opt{'defaults-file'}"; $mysqllogin = "--defaults-file=" . $opt{'defaults-file'}; my $loginstatus = `$mysqladmincmd $mysqllogin ping 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { goodprint "Logged in using credentials from defaults file account."; return 1; } } else { # It's not Plesk or Debian, we should try a login debugprint "$mysqladmincmd $remotestring ping 2>&1"; my $loginstatus = `$mysqladmincmd $remotestring ping 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { # Login went just fine $mysqllogin = " $remotestring "; # Did this go well because of a .my.cnf file or is there no password set? my $userpath = `printenv HOME`; if ( length($userpath) > 0 ) { chomp($userpath); } unless ( -e "${userpath}/.my.cnf" or -e "${userpath}/.mylogin.cnf" ) { badprint "Successfully authenticated with no password - SECURITY RISK!"; } return 1; } else { if ( $opt{'noask'} == 1 ) { badprint "Attempted to use login credentials, but they were invalid"; exit 1; } my ( $name, $password ); # If --user is defined no need to ask for username if ( $opt{user} ne 0 ) { $name = $opt{user}; } else { print STDERR "Please enter your MySQL administrative login: "; $name = ; } # If --pass is defined no need to ask for password if ( $opt{pass} ne 0 ) { $password = $opt{pass}; } else { print STDERR "Please enter your MySQL administrative password: "; system("stty -echo >$devnull 2>&1"); $password = ; system("stty echo >$devnull 2>&1"); } chomp($password); chomp($name); $mysqllogin = "-u $name"; if ( length($password) > 0 ) { $mysqllogin .= " -p'$password'"; } $mysqllogin .= $remotestring; my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`; if ( $loginstatus =~ /mysqld is alive/ ) { print STDERR ""; if ( !length($password) ) { # Did this go well because of a .my.cnf file or is there no password set? my $userpath = `printenv HOME`; chomp($userpath); unless ( -e "$userpath/.my.cnf" ) { badprint "Successfully authenticated with no password - SECURITY RISK!"; } } return 1; } else { badprint "Attempted to use login credentials, but they were invalid."; exit 1; } exit 1; } } } # MySQL Request Array sub select_array { my $req = shift; debugprint "PERFORM: $req "; my @result = `$mysqlcmd $mysqllogin -Bse "\\w$req" 2>>/dev/null`; if ( $? != 0 ) { badprint "failed to execute: $req"; badprint "FAIL Execute SQL / return code: $?"; debugprint "CMD : $mysqlcmd"; debugprint "OPTIONS: $mysqllogin"; debugprint `$mysqlcmd $mysqllogin -Bse "$req" 2>&1`; #exit $?; } debugprint "select_array: return code : $?"; chomp(@result); return @result; } sub human_size { my ( $size, $n ) = ( shift, 0 ); ++$n and $size /= 1024 until $size < 1024; return sprintf "%.2f %s", $size, (qw[ bytes KB MB GB ])[$n]; } # MySQL Request one sub select_one { my $req = shift; debugprint "PERFORM: $req "; my $result = `$mysqlcmd $mysqllogin -Bse "\\w$req" 2>>/dev/null`; if ( $? != 0 ) { badprint "failed to execute: $req"; badprint "FAIL Execute SQL / return code: $?"; debugprint "CMD : $mysqlcmd"; debugprint "OPTIONS: $mysqllogin"; debugprint `$mysqlcmd $mysqllogin -Bse "$req" 2>&1`; #exit $?; } debugprint "select_array: return code : $?"; chomp($result); return $result; } # MySQL Request one sub select_one_g { my $pattern = shift; my $req = shift; debugprint "PERFORM: $req "; my @result = `$mysqlcmd $mysqllogin -re "\\w$req\\G" 2>>/dev/null`; if ( $? != 0 ) { badprint "failed to execute: $req"; badprint "FAIL Execute SQL / return code: $?"; debugprint "CMD : $mysqlcmd"; debugprint "OPTIONS: $mysqllogin"; debugprint `$mysqlcmd $mysqllogin -Bse "$req" 2>&1`; #exit $?; } debugprint "select_array: return code : $?"; chomp(@result); return ( grep { /$pattern/ } @result )[0]; } sub select_str_g { my $pattern = shift; my $req = shift; my $str = select_one_g $pattern, $req; return () unless defined $str; my @val = split /:/, $str; shift @val; return trim(@val); } sub get_tuning_info { my @infoconn = select_array "\\s"; my ( $tkey, $tval ); @infoconn = grep { !/Threads:/ and !/Connection id:/ and !/pager:/ and !/Using/ } @infoconn; foreach my $line (@infoconn) { if ( $line =~ /\s*(.*):\s*(.*)/ ) { debugprint "$1 => $2"; $tkey = $1; $tval = $2; chomp($tkey); chomp($tval); $result{'MySQL Client'}{$tkey} = $tval; } } $result{'MySQL Client'}{'Client Path'} = $mysqlcmd; $result{'MySQL Client'}{'Admin Path'} = $mysqladmincmd; $result{'MySQL Client'}{'Authentication Info'} = $mysqllogin; } # Populates all of the variable and status hashes my ( %mystat, %myvar, $dummyselect, %myrepl, %myslaves ); sub arr2hash { my $href = shift; my $harr = shift; my $sep = shift; $sep = '\s' unless defined($sep); foreach my $line (@$harr) { next if ( $line =~ m/^\*\*\*\*\*\*\*/ ); $line =~ /([a-zA-Z_]*)\s*$sep\s*(.*)/; $$href{$1} = $2; debugprint "V: $1 = $2"; } } sub get_all_vars { # We need to initiate at least one query so that our data is useable $dummyselect = select_one "SELECT VERSION()"; if ( not defined($dummyselect) or $dummyselect eq "" ) { badprint "You probably did not get enough privileges for running MySQLTuner ..."; exit(256); } $dummyselect =~ s/(.*?)\-.*/$1/; debugprint "VERSION: " . $dummyselect . ""; $result{'MySQL Client'}{'Version'} = $dummyselect; my @mysqlvarlist = select_array("SHOW VARIABLES"); push( @mysqlvarlist, select_array("SHOW GLOBAL VARIABLES") ); arr2hash( \%myvar, \@mysqlvarlist ); $result{'Variables'} = \%myvar; my @mysqlstatlist = select_array("SHOW STATUS"); push( @mysqlstatlist, select_array("SHOW GLOBAL STATUS") ); arr2hash( \%mystat, \@mysqlstatlist ); $result{'Status'} = \%mystat; unless ( defined( $myvar{'innodb_support_xa'} ) ) { $myvar{'innodb_support_xa'} = 'ON'; } $mystat{'Uptime'} = 1 unless defined($mystat{'Uptime'}) and $mystat{'Uptime'}>0; $myvar{'have_galera'} = "NO"; if ( defined( $myvar{'wsrep_provider_options'} ) && $myvar{'wsrep_provider_options'} ne "" && $myvar{'wsrep_on'} ne "OFF" ) { $myvar{'have_galera'} = "YES"; debugprint "Galera options: " . $myvar{'wsrep_provider_options'}; } # Workaround for MySQL bug #59393 wrt. ignore-builtin-innodb if ( ( $myvar{'ignore_builtin_innodb'} || "" ) eq "ON" ) { $myvar{'have_innodb'} = "NO"; } # Support GTID MODE FOR MARIADB # Issue MariaDB GTID mode #272 $myvar{'gtid_mode'} = $myvar{'gtid_strict_mode'} if ( defined( $myvar{'gtid_strict_mode'} ) ); $myvar{'have_threadpool'} = "NO"; if ( defined( $myvar{'thread_pool_size'} ) and $myvar{'thread_pool_size'} > 0 ) { $myvar{'have_threadpool'} = "YES"; } # have_* for engines is deprecated and will be removed in MySQL 5.6; # check SHOW ENGINES and set corresponding old style variables. # Also works around MySQL bug #59393 wrt. skip-innodb my @mysqlenginelist = select_array "SHOW ENGINES"; foreach my $line (@mysqlenginelist) { if ( $line =~ /^([a-zA-Z_]+)\s+(\S+)/ ) { my $engine = lc($1); if ( $engine eq "federated" || $engine eq "blackhole" ) { $engine .= "_engine"; } elsif ( $engine eq "berkeleydb" ) { $engine = "bdb"; } my $val = ( $2 eq "DEFAULT" ) ? "YES" : $2; $myvar{"have_$engine"} = $val; $result{'Storage Engines'}{$engine} = $2; } } debugprint Dumper(@mysqlenginelist); my @mysqlslave = select_array("SHOW SLAVE STATUS\\G"); arr2hash( \%myrepl, \@mysqlslave, ':' ); $result{'Replication'}{'Status'} = \%myrepl; my @mysqlslaves = select_array "SHOW SLAVE HOSTS"; my @lineitems = (); foreach my $line (@mysqlslaves) { debugprint "L: $line "; @lineitems = split /\s+/, $line; $myslaves{ $lineitems[0] } = $line; $result{'Replication'}{'Slaves'}{ $lineitems[0] } = $lineitems[4]; } } sub remove_cr { return map { my $line = $_; $line =~ s/\n$//g; $line =~ s/^\s+$//g; $line; } @_; } sub remove_empty { grep { $_ ne '' } @_; } sub grep_file_contents { my $file = shift; my $patt; } sub get_file_contents { my $file = shift; open( my $fh, "<", $file ) or die "Can't open $file for read: $!"; my @lines = <$fh>; close $fh or die "Cannot close $file: $!"; @lines = remove_cr @lines; return @lines; } sub get_basic_passwords { return get_file_contents(shift); } sub get_log_file_real_path { my $file = shift; my $hostname = shift; my $datadir = shift; if ( -f "$file" ) { return $file; } elsif ( -f "$hostname.err" ) { return "$hostname.err"; } elsif ( $datadir ne "" ) { return "$datadir$hostname.err"; } else { return $file; } } sub log_file_recommendations { $myvar{'log_error'} = get_log_file_real_path( $myvar{'log_error'}, $myvar{'hostname'}, $myvar{'datadir'} ); subheaderprint "Log file Recommendations"; infoprint "Log file: " . $myvar{'log_error'} . "(" . hr_bytes_rnd( ( stat $myvar{'log_error'} )[7] ) . ")"; if ( -f "$myvar{'log_error'}" ) { goodprint "Log file $myvar{'log_error'} exists"; } else { badprint "Log file $myvar{'log_error'} doesn't exist"; } if ( -r "$myvar{'log_error'}" ) { goodprint "Log file $myvar{'log_error'} is readable."; } else { badprint "Log file $myvar{'log_error'} isn't readable."; return; } if ( ( stat $myvar{'log_error'} )[7] > 0 ) { goodprint "Log file $myvar{'log_error'} is not empty"; } else { badprint "Log file $myvar{'log_error'} is empty"; } if ( ( stat $myvar{'log_error'} )[7] < 32 * 1024 * 1024 ) { goodprint "Log file $myvar{'log_error'} is smaller than 32 Mb"; } else { badprint "Log file $myvar{'log_error'} is bigger than 32 Mb"; push @generalrec, $myvar{'log_error'} . " is > 32Mb, you should analyze why or implement a rotation log strategy such as logrotate!"; } my $numLi = 0; my $nbWarnLog = 0; my $nbErrLog = 0; my @lastShutdowns; my @lastStarts; open( my $fh, '<', $myvar{'log_error'} ) or die "Can't open $myvar{'log_error'} for read: $!"; while ( my $logLi = <$fh> ) { chomp $logLi; $numLi++; debugprint "$numLi: $logLi" if $logLi =~ /warning|error/i; $nbErrLog++ if $logLi =~ /error/i; $nbWarnLog++ if $logLi =~ /warning/i; push @lastShutdowns, $logLi if $logLi =~ /Shutdown complete/ and $logLi !~ /Innodb/i; push @lastStarts, $logLi if $logLi =~ /ready for connections/; } close $fh; if ( $nbWarnLog > 0 ) { badprint "$myvar{'log_error'} contains $nbWarnLog warning(s)."; push @generalrec, "Control warning line(s) into $myvar{'log_error'} file"; } else { goodprint "$myvar{'log_error'} doesn't contain any warning."; } if ( $nbErrLog > 0 ) { badprint "$myvar{'log_error'} contains $nbErrLog error(s)."; push @generalrec, "Control error line(s) into $myvar{'log_error'} file"; } else { goodprint "$myvar{'log_error'} doesn't contain any error."; } infoprint scalar @lastStarts . " start(s) detected in $myvar{'log_error'}"; my $nStart = 0; my $nEnd = 10; if ( scalar @lastStarts < $nEnd ) { $nEnd = scalar @lastStarts; } for my $startd ( reverse @lastStarts[ -$nEnd .. -1 ] ) { $nStart++; infoprint "$nStart) $startd"; } infoprint scalar @lastShutdowns . " shutdown(s) detected in $myvar{'log_error'}"; $nStart = 0; $nEnd = 10; if ( scalar @lastShutdowns < $nEnd ) { $nEnd = scalar @lastShutdowns; } for my $shutd ( reverse @lastShutdowns[ -$nEnd .. -1 ] ) { $nStart++; infoprint "$nStart) $shutd"; } #exit 0; } sub cve_recommendations { subheaderprint "CVE Security Recommendations"; unless ( defined( $opt{cvefile} ) && -f "$opt{cvefile}" ) { infoprint "Skipped due to --cvefile option undefined"; return; } #$mysqlvermajor=10; #$mysqlverminor=1; #$mysqlvermicro=17; #prettyprint "Look for related CVE for $myvar{'version'} or lower in $opt{cvefile}"; my $cvefound = 0; open( my $fh, "<", $opt{cvefile} ) or die "Can't open $opt{cvefile} for read: $!"; while ( my $cveline = <$fh> ) { my @cve = split( ';', $cveline ); debugprint "Comparing $mysqlvermajor\.$mysqlverminor\.$mysqlvermicro with $cve[1]\.$cve[2]\.$cve[3] : " . ( mysql_version_le( $cve[1], $cve[2], $cve[3] ) ? '<=' : '>' ); # Avoid not major/minor version corresponding CVEs next unless ( int( $cve[1] ) == $mysqlvermajor && int( $cve[2] ) == $mysqlverminor ); if ( int( $cve[3] ) >= $mysqlvermicro ) { badprint "$cve[4](<= $cve[1]\.$cve[2]\.$cve[3]) : $cve[6]"; $result{'CVE'}{'List'}{$cvefound} = "$cve[4](<= $cve[1]\.$cve[2]\.$cve[3]) : $cve[6]"; $cvefound++; } } close $fh or die "Cannot close $opt{cvefile}: $!"; $result{'CVE'}{'nb'} = $cvefound; my $cve_warning_notes = ""; if ( $cvefound == 0 ) { goodprint "NO SECURITY CVE FOUND FOR YOUR VERSION"; return; } if ( $mysqlvermajor eq 5 and $mysqlverminor eq 5 ) { infoprint "False positive CVE(s) for MySQL and MariaDB 5.5.x can be found."; infoprint "Check careful each CVE for those particular versions"; } badprint $cvefound . " CVE(s) found for your MySQL release."; push( @generalrec, $cvefound . " CVE(s) found for your MySQL release. Consider upgrading your version !" ); } sub get_opened_ports { my @opened_ports = `netstat -ltn`; @opened_ports = map { my $v = $_; $v =~ s/.*:(\d+)\s.*$/$1/; $v =~ s/\D//g; $v; } @opened_ports; @opened_ports = sort { $a <=> $b } grep { !/^$/ } @opened_ports; debugprint Dumper \@opened_ports; $result{'Network'}{'TCP Opened'} = \@opened_ports; return @opened_ports; } sub is_open_port { my $port = shift; if ( grep { /^$port$/ } get_opened_ports ) { return 1; } return 0; } sub get_process_memory { my $pid = shift; my @mem = `ps -p $pid -o rss`; return 0 if scalar @mem != 2; return $mem[1] * 1024; } sub get_other_process_memory { return 0 if ( $opt{tbstat} == 0 ); my @procs = `ps eaxo pid,command`; @procs = map { my $v = $_; $v =~ s/.*PID.*//; $v =~ s/.*mysqld.*//; $v =~ s/.*\[.*\].*//; $v =~ s/^\s+$//g; $v =~ s/.*PID.*CMD.*//; $v =~ s/.*systemd.*//; $v =~ s/\s*?(\d+)\s*.*/$1/g; $v; } @procs; @procs = remove_cr @procs; @procs = remove_empty @procs; my $totalMemOther = 0; map { $totalMemOther += get_process_memory($_); } @procs; return $totalMemOther; } sub get_os_release { if ( -f "/etc/lsb-release" ) { my @info_release = get_file_contents "/etc/lsb-release"; my $os_release = $info_release[3]; $os_release =~ s/.*="//; $os_release =~ s/"$//; return $os_release; } if ( -f "/etc/system-release" ) { my @info_release = get_file_contents "/etc/system-release"; return $info_release[0]; } if ( -f "/etc/os-release" ) { my @info_release = get_file_contents "/etc/os-release"; my $os_release = $info_release[0]; $os_release =~ s/.*="//; $os_release =~ s/"$//; return $os_release; } if ( -f "/etc/issue" ) { my @info_release = get_file_contents "/etc/issue"; my $os_release = $info_release[0]; $os_release =~ s/\s+\\n.*//; return $os_release; } return "Unknown OS release"; } sub get_fs_info { my @sinfo = `df -P | grep '%'`; my @iinfo = `df -Pi| grep '%'`; shift @iinfo; @sinfo = map { my $v = $_; $v =~ s/.*\s(\d+)%\s+(.*)/$1\t$2/g; $v; } @sinfo; foreach my $info (@sinfo) { next if $info =~ m{(\d+)\t/(run|dev|sys|proc)($|/)}; if ( $info =~ /(\d+)\t(.*)/ ) { if ( $1 > 85 ) { badprint "mount point $2 is using $1 % total space"; push( @generalrec, "Add some space to $2 mountpoint." ); } else { infoprint "mount point $2 is using $1 % of total space"; } $result{'Filesystem'}{'Space Pct'}{$2} = $1; } } @iinfo = map { my $v = $_; $v =~ s/.*\s(\d+)%\s+(.*)/$1\t$2/g; $v; } @iinfo; foreach my $info (@iinfo) { next if $info =~ m{(\d+)\t/(run|dev|sys|proc)($|/)}; if ( $info =~ /(\d+)\t(.*)/ ) { if ( $1 > 85 ) { badprint "mount point $2 is using $1 % of max allowed inodes"; push( @generalrec, "Cleanup files from $2 mountpoint or reformat you filesystem." ); } else { infoprint "mount point $2 is using $1 % of max allowed inodes"; } $result{'Filesystem'}{'Inode Pct'}{$2} = $1; } } } sub merge_hash { my $h1 = shift; my $h2 = shift; my %result = {}; foreach my $substanceref ( $h1, $h2 ) { while ( my ( $k, $v ) = each %$substanceref ) { next if ( exists $result{$k} ); $result{$k} = $v; } } return \%result; } sub is_virtual_machine { my $isVm = `grep -Ec '^flags.*\ hypervisor\ ' /proc/cpuinfo`; return ( $isVm == 0 ? 0 : 1 ); } sub infocmd { my $cmd = "@_"; debugprint "CMD: $cmd"; my @result = `$cmd`; @result = remove_cr @result; for my $l (@result) { infoprint "$l"; } } sub infocmd_tab { my $cmd = "@_"; debugprint "CMD: $cmd"; my @result = `$cmd`; @result = remove_cr @result; for my $l (@result) { infoprint "\t$l"; } } sub infocmd_one { my $cmd = "@_"; my @result = `$cmd 2>&1`; @result = remove_cr @result; return join ', ', @result; } sub get_kernel_info { my @params = ( 'fs.aio-max-nr', 'fs.aio-nr', 'fs.file-max', 'sunrpc.tcp_fin_timeout', 'sunrpc.tcp_max_slot_table_entries', 'sunrpc.tcp_slot_table_entries', 'vm.swappiness' ); infoprint "Information about kernel tuning:"; foreach my $param (@params) { infocmd_tab("sysctl $param 2>/dev/null"); $result{'OS'}{'Config'}{$param} = `sysctl -n $param 2>/dev/null`; } if ( `sysctl -n vm.swappiness` > 10 ) { badprint "Swappiness is > 10, please consider having a value lower than 10"; push @generalrec, "setup swappiness lower or equals to 10"; push @adjvars, 'vm.swappiness <= 10 (echo 10 > /proc/sys/vm/swappiness)'; } else { infoprint "Swappiness is < 10."; } # only if /proc/sys/sunrpc exists my $tcp_slot_entries = `sysctl -n sunrpc.tcp_slot_table_entries 2>/dev/null`; if ( -f "/proc/sys/sunrpc" and ( $tcp_slot_entries eq '' or $tcp_slot_entries < 100 ) ) { badprint "Initial TCP slot entries is < 1M, please consider having a value greater than 100"; push @generalrec, "setup Initial TCP slot entries greater than 100"; push @adjvars, 'sunrpc.tcp_slot_table_entries > 100 (echo 128 > /proc/sys/sunrpc/tcp_slot_table_entries)'; } else { infoprint "TCP slot entries is > 100."; } if ( `sysctl -n fs.aio-max-nr` < 1000000 ) { badprint "Max running total of the number of events is < 1M, please consider having a value greater than 1M"; push @generalrec, "setup Max running number events greater than 1M"; push @adjvars, 'fs.aio-max-nr > 1M (echo 1048576 > /proc/sys/fs/aio-max-nr)'; } else { infoprint "Max Number of AIO events is > 1M."; } } sub get_system_info { $result{'OS'}{'Release'} = get_os_release(); infoprint get_os_release; if (is_virtual_machine) { infoprint "Machine type : Virtual machine"; $result{'OS'}{'Virtual Machine'} = 'YES'; } else { infoprint "Machine type : Physical machine"; $result{'OS'}{'Virtual Machine'} = 'NO'; } $result{'Network'}{'Connected'} = 'NO'; `ping -c 1 ipecho.net &>/dev/null`; my $isConnected = $?; if ( $? == 0 ) { infoprint "Internet : Connected"; $result{'Network'}{'Connected'} = 'YES'; } else { badprint "Internet : Disconnected"; } $result{'OS'}{'NbCore'} = cpu_cores; infoprint "Number of Core CPU : " . cpu_cores; $result{'OS'}{'Type'} = `uname -o`; infoprint "Operating System Type : " . infocmd_one "uname -o"; $result{'OS'}{'Kernel'} = `uname -r`; infoprint "Kernel Release : " . infocmd_one "uname -r"; $result{'OS'}{'Hostname'} = `hostname`; $result{'Network'}{'Internal Ip'} = `hostname -I`; infoprint "Hostname : " . infocmd_one "hostname"; infoprint "Network Cards : "; infocmd_tab "ifconfig| grep -A1 mtu"; infoprint "Internal IP : " . infocmd_one "hostname -I"; $result{'Network'}{'Internal Ip'} = `ifconfig| grep -A1 mtu`; my $httpcli = get_http_cli(); infoprint "HTTP client found: $httpcli" if defined $httpcli; my $ext_ip = ""; if ( $httpcli =~ /curl$/ ) { $ext_ip = infocmd_one "$httpcli -m 3 ipecho.net/plain"; } elsif ( $httpcli =~ /wget$/ ) { $ext_ip = infocmd_one "$httpcli -t 1 -T 3 -q -O - ipecho.net/plain"; } infoprint "External IP : " . $ext_ip; $result{'Network'}{'External Ip'} = $ext_ip; badprint "External IP : Can't check because of Internet connectivity" unless defined($httpcli); infoprint "Name Servers : " . infocmd_one "grep 'nameserver' /etc/resolv.conf \| awk '{print \$2}'"; infoprint "Logged In users : "; infocmd_tab "who"; $result{'OS'}{'Logged users'} = `who`; infoprint "Ram Usages in Mb : "; infocmd_tab "free -m | grep -v +"; $result{'OS'}{'Free Memory RAM'} = `free -m | grep -v +`; infoprint "Load Average : "; infocmd_tab "top -n 1 -b | grep 'load average:'"; $result{'OS'}{'Load Average'} = `top -n 1 -b | grep 'load average:'`; infoprint "System Uptime : "; infocmd_tab "uptime"; $result{'OS'}{'Uptime'} = `uptime`; } sub system_recommendations { return if ( $opt{sysstat} == 0 ); subheaderprint "System Linux Recommendations"; my $os = `uname`; unless ( $os =~ /Linux/i ) { infoprint "Skipped due to non Linux server"; return; } prettyprint "Look for related Linux system recommendations"; #prettyprint '-'x78; get_system_info(); my $omem = get_other_process_memory; infoprint "User process except mysqld used " . hr_bytes_rnd($omem) . " RAM."; if ( ( 0.15 * $physical_memory ) < $omem ) { badprint "Other user process except mysqld used more than 15% of total physical memory " . percentage( $omem, $physical_memory ) . "% (" . hr_bytes_rnd($omem) . " / " . hr_bytes_rnd($physical_memory) . ")"; push( @generalrec, "Consider stopping or dedicate server for additional process other than mysqld." ); push( @adjvars, "DON'T APPLY SETTINGS BECAUSE THERE ARE TOO MANY PROCESSES RUNNING ON THIS SERVER. OOM KILL CAN OCCUR!" ); } else { infoprint "Other user process except mysqld used less than 15% of total physical memory " . percentage( $omem, $physical_memory ) . "% (" . hr_bytes_rnd($omem) . " / " . hr_bytes_rnd($physical_memory) . ")"; } if ( $opt{'maxportallowed'} > 0 ) { my @opened_ports = get_opened_ports; infoprint "There is " . scalar @opened_ports . " listening port(s) on this server."; if ( scalar(@opened_ports) > $opt{'maxportallowed'} ) { badprint "There is too many listening ports: " . scalar(@opened_ports) . " opened > " . $opt{'maxportallowed'} . "allowed."; push( @generalrec, "Consider dedicating a server for your database installation with less services running on !" ); } else { goodprint "There is less than " . $opt{'maxportallowed'} . " opened ports on this server."; } } foreach my $banport (@banned_ports) { if ( is_open_port($banport) ) { badprint "Banned port: $banport is opened.."; push( @generalrec, "Port $banport is opened. Consider stopping program handling this port." ); } else { goodprint "$banport is not opened."; } } get_fs_info; get_kernel_info; } sub security_recommendations { subheaderprint "Security Recommendations"; if ( mysql_version_eq(8) ) { infoprint "Skipped due to unsupported feature for MySQL 8"; return; } #exit 0; if ( $opt{skippassword} eq 1 ) { infoprint "Skipped due to --skippassword option"; return; } my $PASS_COLUMN_NAME = 'password'; if ( $myvar{'version'} =~ /5\.7|10\..*MariaDB*/ ) { $PASS_COLUMN_NAME = "IF(plugin='mysql_native_password', authentication_string, password)"; } debugprint "Password column = $PASS_COLUMN_NAME"; # Looking for Anonymous users my @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE TRIM(USER) = '' OR USER IS NULL"; debugprint Dumper \@mysqlstatlist; #exit 0; if (@mysqlstatlist) { foreach my $line ( sort @mysqlstatlist ) { chomp($line); badprint "User '" . $line . "' is an anonymous account."; } push( @generalrec, "Remove Anonymous User accounts - there are " . scalar(@mysqlstatlist) . " anonymous accounts." ); } else { goodprint "There are no anonymous accounts for any database users"; } if ( mysql_version_le( 5, 1 ) ) { badprint "No more password checks for MySQL version <=5.1"; badprint "MySQL version <=5.1 are deprecated and end of support."; return; } # Looking for Empty Password if ( mysql_version_ge( 5, 5 ) ) { @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE ($PASS_COLUMN_NAME = '' OR $PASS_COLUMN_NAME IS NULL) AND plugin NOT IN ('unix_socket', 'win_socket', 'auth_pam_compat')"; } else { @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE ($PASS_COLUMN_NAME = '' OR $PASS_COLUMN_NAME IS NULL)"; } if (@mysqlstatlist) { foreach my $line ( sort @mysqlstatlist ) { chomp($line); badprint "User '" . $line . "' has no password set."; } push( @generalrec, "Set up a Password for user with the following SQL statement ( SET PASSWORD FOR 'user'\@'SpecificDNSorIp' = PASSWORD('secure_password'); )" ); } else { goodprint "All database users have passwords assigned"; } if ( mysql_version_ge( 5, 7 ) ) { my $valPlugin = select_one( "select count(*) from information_schema.plugins where PLUGIN_NAME='validate_password' AND PLUGIN_STATUS='ACTIVE'" ); if ( $valPlugin >= 1 ) { infoprint "Bug #80860 MySQL 5.7: Avoid testing password when validate_password is activated"; return; } } # Looking for User with user/ uppercase /capitalise user as password @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE CAST($PASS_COLUMN_NAME as Binary) = PASSWORD(user) OR CAST($PASS_COLUMN_NAME as Binary) = PASSWORD(UPPER(user)) OR CAST($PASS_COLUMN_NAME as Binary) = PASSWORD(CONCAT(UPPER(LEFT(User, 1)), SUBSTRING(User, 2, LENGTH(User))))"; if (@mysqlstatlist) { foreach my $line ( sort @mysqlstatlist ) { chomp($line); badprint "User '" . $line . "' has user name as password."; } push( @generalrec, "Set up a Secure Password for user\@host ( SET PASSWORD FOR 'user'\@'SpecificDNSorIp' = PASSWORD('secure_password'); )" ); } @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE HOST='%'"; if (@mysqlstatlist) { foreach my $line ( sort @mysqlstatlist ) { chomp($line); badprint "User '" . $line . "' does not specify hostname restrictions."; } push( @generalrec, "Restrict Host for user\@% to user\@SpecificDNSorIp" ); } unless ( -f $basic_password_files ) { badprint "There is no basic password file list!"; return; } my @passwords = get_basic_passwords $basic_password_files; infoprint "There are " . scalar(@passwords) . " basic passwords in the list."; my $nbins = 0; my $passreq; if (@passwords) { my $nbInterPass = 0; foreach my $pass (@passwords) { $nbInterPass++; $pass =~ s/\s//g; $pass =~ s/\'/\\\'/g; chomp($pass); # Looking for User with user/ uppercase /capitalise weak password @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE $PASS_COLUMN_NAME = PASSWORD('" . $pass . "') OR $PASS_COLUMN_NAME = PASSWORD(UPPER('" . $pass . "')) OR $PASS_COLUMN_NAME = PASSWORD(CONCAT(UPPER(LEFT('" . $pass . "', 1)), SUBSTRING('" . $pass . "', 2, LENGTH('" . $pass . "'))))"; debugprint "There is " . scalar(@mysqlstatlist) . " items."; if (@mysqlstatlist) { foreach my $line (@mysqlstatlist) { chomp($line); badprint "User '" . $line . "' is using weak password: $pass in a lower, upper or capitalize derivative version."; $nbins++; } } debugprint "$nbInterPass / " . scalar(@passwords) if ( $nbInterPass % 1000 == 0 ); } } if ( $nbins > 0 ) { push( @generalrec, $nbins . " user(s) used basic or weak password." ); } } sub get_replication_status { subheaderprint "Replication Metrics"; infoprint "Galera Synchronous replication: " . $myvar{'have_galera'}; if ( scalar( keys %myslaves ) == 0 ) { infoprint "No replication slave(s) for this server."; } else { infoprint "This server is acting as master for " . scalar( keys %myslaves ) . " server(s)."; } infoprint "Binlog format: " . $myvar{'binlog_format'}; infoprint "XA support enabled: " . $myvar{'innodb_support_xa'}; infoprint "Semi synchronous replication Master: " . ( defined( $myvar{'rpl_semi_sync_master_enabled'} ) ? $myvar{'rpl_semi_sync_master_enabled'} : 'Not Activated' ); infoprint "Semi synchronous replication Slave: " . ( defined( $myvar{'rpl_semi_sync_slave_enabled'} ) ? $myvar{'rpl_semi_sync_slave_enabled'} : 'Not Activated' ); if ( scalar( keys %myrepl ) == 0 and scalar( keys %myslaves ) == 0 ) { infoprint "This is a standalone server"; return; } if ( scalar( keys %myrepl ) == 0 ) { infoprint "No replication setup for this server or replication not started."; return; } $result{'Replication'}{'status'} = \%myrepl; my ($io_running) = $myrepl{'Slave_IO_Running'}; debugprint "IO RUNNING: $io_running "; my ($sql_running) = $myrepl{'Slave_SQL_Running'}; debugprint "SQL RUNNING: $sql_running "; my ($seconds_behind_master) = $myrepl{'Seconds_Behind_Master'}; debugprint "SECONDS : $seconds_behind_master "; if ( defined($io_running) and ( $io_running !~ /yes/i or $sql_running !~ /yes/i ) ) { badprint "This replication slave is not running but seems to be configured."; } if ( defined($io_running) && $io_running =~ /yes/i && $sql_running =~ /yes/i ) { if ( $myvar{'read_only'} eq 'OFF' ) { badprint "This replication slave is running with the read_only option disabled."; } else { goodprint "This replication slave is running with the read_only option enabled."; } if ( $seconds_behind_master > 0 ) { badprint "This replication slave is lagging and slave has $seconds_behind_master second(s) behind master host."; } else { goodprint "This replication slave is up to date with master."; } } } sub validate_mysql_version { ( $mysqlvermajor, $mysqlverminor, $mysqlvermicro ) = $myvar{'version'} =~ /^(\d+)(?:\.(\d+)|)(?:\.(\d+)|)/; $mysqlverminor ||= 0; $mysqlvermicro ||= 0; if ( !mysql_version_ge( 5, 1 ) ) { badprint "Your MySQL version " . $myvar{'version'} . " is EOL software! Upgrade soon!"; } elsif ( ( mysql_version_ge(6) and mysql_version_le(9) ) or mysql_version_ge(12) ) { badprint "Currently running unsupported MySQL version " . $myvar{'version'} . ""; } else { goodprint "Currently running supported MySQL version " . $myvar{'version'} . ""; } } # Checks if MySQL version is equal to (major, minor, micro) sub mysql_version_eq { my ( $maj, $min, $mic ) = @_; return int($mysqlvermajor) == int($maj) if ( !defined($min) && !defined($mic) ); return int($mysqlvermajor) == int($maj) && int($mysqlverminor) == int($min) if ( !defined($mic) ); return ( int($mysqlvermajor) == int($maj) && int($mysqlverminor) == int($min) && int($mysqlvermicro) == int($mic) ); } # Checks if MySQL version is greater than equal to (major, minor, micro) sub mysql_version_ge { my ( $maj, $min, $mic ) = @_; $min ||= 0; $mic ||= 0; return int($mysqlvermajor) > int($maj) || ( int($mysqlvermajor) == int($maj) && int($mysqlverminor) > int($min) ) || ( int($mysqlvermajor) == int($maj) && int($mysqlverminor) == int($min) && int($mysqlvermicro) >= int($mic) ); } # Checks if MySQL version is lower than equal to (major, minor, micro) sub mysql_version_le { my ( $maj, $min, $mic ) = @_; $min ||= 0; $mic ||= 0; return int($mysqlvermajor) < int($maj) || ( int($mysqlvermajor) == int($maj) && int($mysqlverminor) < int($min) ) || ( int($mysqlvermajor) == int($maj) && int($mysqlverminor) == int($min) && int($mysqlvermicro) <= int($mic) ); } # Checks if MySQL micro version is lower than equal to (major, minor, micro) sub mysql_micro_version_le { my ( $maj, $min, $mic ) = @_; return $mysqlvermajor == $maj && ( $mysqlverminor == $min && $mysqlvermicro <= $mic ); } # Checks for 32-bit boxes with more than 2GB of RAM my ($arch); sub check_architecture { if ( $doremote eq 1 ) { return; } if ( `uname` =~ /SunOS/ && `isainfo -b` =~ /64/ ) { $arch = 64; goodprint "Operating on 64-bit architecture"; } elsif ( `uname` !~ /SunOS/ && `uname -m` =~ /(64|s390x)/ ) { $arch = 64; goodprint "Operating on 64-bit architecture"; } elsif ( `uname` =~ /AIX/ && `bootinfo -K` =~ /64/ ) { $arch = 64; goodprint "Operating on 64-bit architecture"; } elsif ( `uname` =~ /NetBSD|OpenBSD/ && `sysctl -b hw.machine` =~ /64/ ) { $arch = 64; goodprint "Operating on 64-bit architecture"; } elsif ( `uname` =~ /FreeBSD/ && `sysctl -b hw.machine_arch` =~ /64/ ) { $arch = 64; goodprint "Operating on 64-bit architecture"; } elsif ( `uname` =~ /Darwin/ && `uname -m` =~ /Power Macintosh/ ) { # Darwin box.local 9.8.0 Darwin Kernel Version 9.8.0: Wed Jul 15 16:57:01 PDT 2009; root:xnu1228.15.4~1/RELEASE_PPC Power Macintosh $arch = 64; goodprint "Operating on 64-bit architecture"; } elsif ( `uname` =~ /Darwin/ && `uname -m` =~ /x86_64/ ) { # Darwin gibas.local 12.3.0 Darwin Kernel Version 12.3.0: Sun Jan 6 22:37:10 PST 2013; root:xnu-2050.22.13~1/RELEASE_X86_64 x86_64 $arch = 64; goodprint "Operating on 64-bit architecture"; } else { $arch = 32; if ( $physical_memory > 2147483648 ) { badprint "Switch to 64-bit OS - MySQL cannot currently use all of your RAM"; } else { goodprint "Operating on 32-bit architecture with less than 2GB RAM"; } } $result{'OS'}{'Architecture'} = "$arch bits"; } # Start up a ton of storage engine counts/statistics my ( %enginestats, %enginecount, $fragtables ); sub check_storage_engines { if ( $opt{skipsize} eq 1 ) { subheaderprint "Storage Engine Statistics"; infoprint "Skipped due to --skipsize option"; return; } subheaderprint "Storage Engine Statistics"; my $engines; if ( mysql_version_ge( 5, 5 ) ) { my @engineresults = select_array "SELECT ENGINE,SUPPORT FROM information_schema.ENGINES ORDER BY ENGINE ASC"; foreach my $line (@engineresults) { my ( $engine, $engineenabled ); ( $engine, $engineenabled ) = $line =~ /([a-zA-Z_]*)\s+([a-zA-Z]+)/; $result{'Engine'}{$engine}{'Enabled'} = $engineenabled; $engines .= ( $engineenabled eq "YES" || $engineenabled eq "DEFAULT" ) ? greenwrap "+" . $engine . " " : redwrap "-" . $engine . " "; } } elsif ( mysql_version_ge( 5, 1, 5 ) ) { my @engineresults = select_array "SELECT ENGINE,SUPPORT FROM information_schema.ENGINES WHERE ENGINE NOT IN ('performance_schema','MyISAM','MERGE','MEMORY') ORDER BY ENGINE ASC"; foreach my $line (@engineresults) { my ( $engine, $engineenabled ); ( $engine, $engineenabled ) = $line =~ /([a-zA-Z_]*)\s+([a-zA-Z]+)/; $result{'Engine'}{$engine}{'Enabled'} = $engineenabled; $engines .= ( $engineenabled eq "YES" || $engineenabled eq "DEFAULT" ) ? greenwrap "+" . $engine . " " : redwrap "-" . $engine . " "; } } else { $engines .= ( defined $myvar{'have_archive'} && $myvar{'have_archive'} eq "YES" ) ? greenwrap "+Archive " : redwrap "-Archive "; $engines .= ( defined $myvar{'have_bdb'} && $myvar{'have_bdb'} eq "YES" ) ? greenwrap "+BDB " : redwrap "-BDB "; $engines .= ( defined $myvar{'have_federated_engine'} && $myvar{'have_federated_engine'} eq "YES" ) ? greenwrap "+Federated " : redwrap "-Federated "; $engines .= ( defined $myvar{'have_innodb'} && $myvar{'have_innodb'} eq "YES" ) ? greenwrap "+InnoDB " : redwrap "-InnoDB "; $engines .= ( defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES" ) ? greenwrap "+ISAM " : redwrap "-ISAM "; $engines .= ( defined $myvar{'have_ndbcluster'} && $myvar{'have_ndbcluster'} eq "YES" ) ? greenwrap "+NDBCluster " : redwrap "-NDBCluster "; } my @dblist = grep { $_ ne 'lost+found' } select_array "SHOW DATABASES"; $result{'Databases'}{'List'} = [@dblist]; infoprint "Status: $engines"; if ( mysql_version_ge( 5, 1, 5 ) ) { # MySQL 5 servers can have table sizes calculated quickly from information schema my @templist = select_array "SELECT ENGINE,SUM(DATA_LENGTH+INDEX_LENGTH),COUNT(ENGINE),SUM(DATA_LENGTH),SUM(INDEX_LENGTH) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema', 'performance_schema', 'mysql') AND ENGINE IS NOT NULL GROUP BY ENGINE ORDER BY ENGINE ASC;"; my ( $engine, $size, $count, $dsize, $isize ); foreach my $line (@templist) { ( $engine, $size, $count, $dsize, $isize ) = $line =~ /([a-zA-Z_]+)\s+(\d+)\s+(\d+)\s+(\d+)\s+(\d+)/; debugprint "Engine Found: $engine"; next unless ( defined($engine) ); $size = 0 unless defined($size); $isize = 0 unless defined($isize); $dsize = 0 unless defined($dsize); $count = 0 unless defined($count); $enginestats{$engine} = $size; $enginecount{$engine} = $count; $result{'Engine'}{$engine}{'Table Number'} = $count; $result{'Engine'}{$engine}{'Total Size'} = $size; $result{'Engine'}{$engine}{'Data Size'} = $dsize; $result{'Engine'}{$engine}{'Index Size'} = $isize; } my $not_innodb = ''; if ( not defined $result{'Variables'}{'innodb_file_per_table'} ) { $not_innodb = "AND NOT ENGINE='InnoDB'"; } elsif ( $result{'Variables'}{'innodb_file_per_table'} eq 'OFF' ) { $not_innodb = "AND NOT ENGINE='InnoDB'"; } $result{'Tables'}{'Fragmented tables'} = [ select_array "SELECT CONCAT(CONCAT(TABLE_SCHEMA, '.'), TABLE_NAME),DATA_FREE FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema','performance_schema', 'mysql') AND DATA_LENGTH/1024/1024>100 AND DATA_FREE*100/(DATA_LENGTH+INDEX_LENGTH+DATA_FREE) > 10 AND NOT ENGINE='MEMORY' $not_innodb" ]; $fragtables = scalar @{ $result{'Tables'}{'Fragmented tables'} }; } else { # MySQL < 5 servers take a lot of work to get table sizes my @tblist; # Now we build a database list, and loop through it to get storage engine stats for tables foreach my $db (@dblist) { chomp($db); if ( $db eq "information_schema" or $db eq "performance_schema" or $db eq "mysql" or $db eq "lost+found" ) { next; } my @ixs = ( 1, 6, 9 ); if ( !mysql_version_ge( 4, 1 ) ) { # MySQL 3.23/4.0 keeps Data_Length in the 5th (0-based) column @ixs = ( 1, 5, 8 ); } push( @tblist, map { [ (split)[@ixs] ] } select_array "SHOW TABLE STATUS FROM \\\`$db\\\`" ); } # Parse through the table list to generate storage engine counts/statistics $fragtables = 0; foreach my $tbl (@tblist) { debugprint "Data dump " . Dumper(@$tbl); my ( $engine, $size, $datafree ) = @$tbl; next if $engine eq 'NULL'; $size = 0 if $size eq 'NULL'; $datafree = 0 if $datafree eq 'NULL'; if ( defined $enginestats{$engine} ) { $enginestats{$engine} += $size; $enginecount{$engine} += 1; } else { $enginestats{$engine} = $size; $enginecount{$engine} = 1; } if ( $datafree > 0 ) { $fragtables++; } } } while ( my ( $engine, $size ) = each(%enginestats) ) { infoprint "Data in $engine tables: " . hr_bytes($size) . " (Tables: " . $enginecount{$engine} . ")" . ""; } # If the storage engine isn't being used, recommend it to be disabled if ( !defined $enginestats{'InnoDB'} && defined $myvar{'have_innodb'} && $myvar{'have_innodb'} eq "YES" ) { badprint "InnoDB is enabled but isn't being used"; push( @generalrec, "Add skip-innodb to MySQL configuration to disable InnoDB" ); } if ( !defined $enginestats{'BerkeleyDB'} && defined $myvar{'have_bdb'} && $myvar{'have_bdb'} eq "YES" ) { badprint "BDB is enabled but isn't being used"; push( @generalrec, "Add skip-bdb to MySQL configuration to disable BDB" ); } if ( !defined $enginestats{'ISAM'} && defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES" ) { badprint "MYISAM is enabled but isn't being used"; push( @generalrec, "Add skip-isam to MySQL configuration to disable ISAM (MySQL > 4.1.0)" ); } # Fragmented tables if ( $fragtables > 0 ) { badprint "Total fragmented tables: $fragtables"; push( @generalrec, "Run OPTIMIZE TABLE to defragment tables for better performance" ); my $total_free = 0; foreach my $table_line ( @{ $result{'Tables'}{'Fragmented tables'} } ) { my ( $full_table_name, $data_free ) = split( /\s+/, $table_line ); $data_free = 0 if ( !defined($data_free) or $data_free eq '' ); $data_free = $data_free / 1024 / 1024; $total_free += $data_free; my ( $table_schema, $table_name ) = split( /\./, $full_table_name ); push( @generalrec, " OPTIMIZE TABLE `$table_schema`.`$table_name`; -- can free $data_free MB" ); } push( @generalrec, "Total freed space after theses OPTIMIZE TABLE : $total_free Mb" ); } else { goodprint "Total fragmented tables: $fragtables"; } # Auto increments my %tblist; # Find the maximum integer my $maxint = select_one "SELECT ~0"; $result{'MaxInt'} = $maxint; # Now we use a database list, and loop through it to get storage engine stats for tables foreach my $db (@dblist) { chomp($db); if ( !$tblist{$db} ) { $tblist{$db} = (); } if ( $db eq "information_schema" ) { next; } my @ia = ( 0, 10 ); if ( !mysql_version_ge( 4, 1 ) ) { # MySQL 3.23/4.0 keeps Data_Length in the 5th (0-based) column @ia = ( 0, 9 ); } push( @{ $tblist{$db} }, map { [ (split)[@ia] ] } select_array "SHOW TABLE STATUS FROM \\\`$db\\\`" ); } my @dbnames = keys %tblist; foreach my $db (@dbnames) { foreach my $tbl ( @{ $tblist{$db} } ) { my ( $name, $autoincrement ) = @$tbl; if ( $autoincrement =~ /^\d+?$/ ) { my $percent = percentage( $autoincrement, $maxint ); $result{'PctAutoIncrement'}{"$db.$name"} = $percent; if ( $percent >= 75 ) { badprint "Table '$db.$name' has an autoincrement value near max capacity ($percent%)"; } } } } } my %mycalc; sub calculations { if ( $mystat{'Questions'} < 1 ) { badprint "Your server has not answered any queries - cannot continue..."; exit 2; } # Per-thread memory if ( mysql_version_ge(4) ) { $mycalc{'per_thread_buffers'} = $myvar{'read_buffer_size'} + $myvar{'read_rnd_buffer_size'} + $myvar{'sort_buffer_size'} + $myvar{'thread_stack'} + $myvar{'join_buffer_size'}; } else { $mycalc{'per_thread_buffers'} = $myvar{'record_buffer'} + $myvar{'record_rnd_buffer'} + $myvar{'sort_buffer'} + $myvar{'thread_stack'} + $myvar{'join_buffer_size'}; } $mycalc{'total_per_thread_buffers'} = $mycalc{'per_thread_buffers'} * $myvar{'max_connections'}; $mycalc{'max_total_per_thread_buffers'} = $mycalc{'per_thread_buffers'} * $mystat{'Max_used_connections'}; # Server-wide memory $mycalc{'max_tmp_table_size'} = ( $myvar{'tmp_table_size'} > $myvar{'max_heap_table_size'} ) ? $myvar{'max_heap_table_size'} : $myvar{'tmp_table_size'}; $mycalc{'server_buffers'} = $myvar{'key_buffer_size'} + $mycalc{'max_tmp_table_size'}; $mycalc{'server_buffers'} += ( defined $myvar{'innodb_buffer_pool_size'} ) ? $myvar{'innodb_buffer_pool_size'} : 0; $mycalc{'server_buffers'} += ( defined $myvar{'innodb_additional_mem_pool_size'} ) ? $myvar{'innodb_additional_mem_pool_size'} : 0; $mycalc{'server_buffers'} += ( defined $myvar{'innodb_log_buffer_size'} ) ? $myvar{'innodb_log_buffer_size'} : 0; $mycalc{'server_buffers'} += ( defined $myvar{'query_cache_size'} ) ? $myvar{'query_cache_size'} : 0; $mycalc{'server_buffers'} += ( defined $myvar{'aria_pagecache_buffer_size'} ) ? $myvar{'aria_pagecache_buffer_size'} : 0; # Global memory # Max used memory is memory used by MySQL based on Max_used_connections # This is the max memory used theoretically calculated with the max concurrent connection number reached by mysql $mycalc{'max_used_memory'} = $mycalc{'server_buffers'} + $mycalc{"max_total_per_thread_buffers"} + get_pf_memory(); # + get_gcache_memory(); $mycalc{'pct_max_used_memory'} = percentage( $mycalc{'max_used_memory'}, $physical_memory ); # Total possible memory is memory needed by MySQL based on max_connections # This is the max memory MySQL can theoretically used if all connections allowed has opened by mysql $mycalc{'max_peak_memory'} = $mycalc{'server_buffers'} + $mycalc{'total_per_thread_buffers'} + get_pf_memory(); # + get_gcache_memory(); $mycalc{'pct_max_physical_memory'} = percentage( $mycalc{'max_peak_memory'}, $physical_memory ); debugprint "Max Used Memory: " . hr_bytes( $mycalc{'max_used_memory'} ) . ""; debugprint "Max Used Percentage RAM: " . $mycalc{'pct_max_used_memory'} . "%"; debugprint "Max Peak Memory: " . hr_bytes( $mycalc{'max_peak_memory'} ) . ""; debugprint "Max Peak Percentage RAM: " . $mycalc{'pct_max_physical_memory'} . "%"; # Slow queries $mycalc{'pct_slow_queries'} = int( ( $mystat{'Slow_queries'} / $mystat{'Questions'} ) * 100 ); # Connections $mycalc{'pct_connections_used'} = int( ( $mystat{'Max_used_connections'} / $myvar{'max_connections'} ) * 100 ); $mycalc{'pct_connections_used'} = ( $mycalc{'pct_connections_used'} > 100 ) ? 100 : $mycalc{'pct_connections_used'}; # Aborted Connections $mycalc{'pct_connections_aborted'} = percentage( $mystat{'Aborted_connects'}, $mystat{'Connections'} ); debugprint "Aborted_connects: " . $mystat{'Aborted_connects'} . ""; debugprint "Connections: " . $mystat{'Connections'} . ""; debugprint "pct_connections_aborted: " . $mycalc{'pct_connections_aborted'} . ""; # Key buffers if ( mysql_version_ge( 4, 1 ) && $myvar{'key_buffer_size'} > 0 ) { $mycalc{'pct_key_buffer_used'} = sprintf( "%.1f", ( 1 - ( ( $mystat{'Key_blocks_unused'} * $myvar{'key_cache_block_size'} ) / $myvar{'key_buffer_size'} ) ) * 100 ); } else { $mycalc{'pct_key_buffer_used'} = 0; } if ( $mystat{'Key_read_requests'} > 0 ) { $mycalc{'pct_keys_from_mem'} = sprintf( "%.1f", ( 100 - ( ( $mystat{'Key_reads'} / $mystat{'Key_read_requests'} ) * 100 ) ) ); } else { $mycalc{'pct_keys_from_mem'} = 0; } if ( defined $mystat{'Aria_pagecache_read_requests'} && $mystat{'Aria_pagecache_read_requests'} > 0 ) { $mycalc{'pct_aria_keys_from_mem'} = sprintf( "%.1f", ( 100 - ( ( $mystat{'Aria_pagecache_reads'} / $mystat{'Aria_pagecache_read_requests'} ) * 100 ) ) ); } else { $mycalc{'pct_aria_keys_from_mem'} = 0; } if ( $mystat{'Key_write_requests'} > 0 ) { $mycalc{'pct_wkeys_from_mem'} = sprintf( "%.1f", ( ( $mystat{'Key_writes'} / $mystat{'Key_write_requests'} ) * 100 ) ); } else { $mycalc{'pct_wkeys_from_mem'} = 0; } if ( $doremote eq 0 and !mysql_version_ge(5) ) { my $size = 0; $size += (split)[0] for `find $myvar{'datadir'} -name "*.MYI" 2>&1 | xargs du -L $duflags 2>&1`; $mycalc{'total_myisam_indexes'} = $size; $mycalc{'total_aria_indexes'} = 0; } elsif ( mysql_version_ge(5) ) { $mycalc{'total_myisam_indexes'} = select_one "SELECT IFNULL(SUM(INDEX_LENGTH),0) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema') AND ENGINE = 'MyISAM';"; $mycalc{'total_aria_indexes'} = select_one "SELECT IFNULL(SUM(INDEX_LENGTH),0) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema') AND ENGINE = 'Aria';"; } if ( defined $mycalc{'total_myisam_indexes'} and $mycalc{'total_myisam_indexes'} == 0 ) { $mycalc{'total_myisam_indexes'} = "fail"; } elsif ( defined $mycalc{'total_myisam_indexes'} ) { chomp( $mycalc{'total_myisam_indexes'} ); } if ( defined $mycalc{'total_aria_indexes'} and $mycalc{'total_aria_indexes'} == 0 ) { $mycalc{'total_aria_indexes'} = 1; } elsif ( defined $mycalc{'total_aria_indexes'} ) { chomp( $mycalc{'total_aria_indexes'} ); } # Query cache if ( mysql_version_ge(8) and mysql_version_le(10) ) { $mycalc{'query_cache_efficiency'} = 0; } elsif ( mysql_version_ge(4) ) { $mycalc{'query_cache_efficiency'} = sprintf( "%.1f", ( $mystat{'Qcache_hits'} / ( $mystat{'Com_select'} + $mystat{'Qcache_hits'} ) ) * 100 ); if ( $myvar{'query_cache_size'} ) { $mycalc{'pct_query_cache_used'} = sprintf( "%.1f", 100 - ( $mystat{'Qcache_free_memory'} / $myvar{'query_cache_size'} ) * 100 ); } if ( $mystat{'Qcache_lowmem_prunes'} == 0 ) { $mycalc{'query_cache_prunes_per_day'} = 0; } else { $mycalc{'query_cache_prunes_per_day'} = int( $mystat{'Qcache_lowmem_prunes'} / ( $mystat{'Uptime'} / 86400 ) ); } } # Sorting $mycalc{'total_sorts'} = $mystat{'Sort_scan'} + $mystat{'Sort_range'}; if ( $mycalc{'total_sorts'} > 0 ) { $mycalc{'pct_temp_sort_table'} = int( ( $mystat{'Sort_merge_passes'} / $mycalc{'total_sorts'} ) * 100 ); } # Joins $mycalc{'joins_without_indexes'} = $mystat{'Select_range_check'} + $mystat{'Select_full_join'}; $mycalc{'joins_without_indexes_per_day'} = int( $mycalc{'joins_without_indexes'} / ( $mystat{'Uptime'} / 86400 ) ); # Temporary tables if ( $mystat{'Created_tmp_tables'} > 0 ) { if ( $mystat{'Created_tmp_disk_tables'} > 0 ) { $mycalc{'pct_temp_disk'} = int( ( $mystat{'Created_tmp_disk_tables'} / $mystat{'Created_tmp_tables'} ) * 100 ); } else { $mycalc{'pct_temp_disk'} = 0; } } # Table cache if ( $mystat{'Opened_tables'} > 0 ) { $mycalc{'table_cache_hit_rate'} = int( $mystat{'Open_tables'} * 100 / $mystat{'Opened_tables'} ); } else { $mycalc{'table_cache_hit_rate'} = 100; } # Open files if ( $myvar{'open_files_limit'} > 0 ) { $mycalc{'pct_files_open'} = int( $mystat{'Open_files'} * 100 / $myvar{'open_files_limit'} ); } # Table locks if ( $mystat{'Table_locks_immediate'} > 0 ) { if ( $mystat{'Table_locks_waited'} == 0 ) { $mycalc{'pct_table_locks_immediate'} = 100; } else { $mycalc{'pct_table_locks_immediate'} = int( $mystat{'Table_locks_immediate'} * 100 / ( $mystat{'Table_locks_waited'} + $mystat{'Table_locks_immediate'} ) ); } } # Thread cache $mycalc{'thread_cache_hit_rate'} = int( 100 - ( ( $mystat{'Threads_created'} / $mystat{'Connections'} ) * 100 ) ); # Other if ( $mystat{'Connections'} > 0 ) { $mycalc{'pct_aborted_connections'} = int( ( $mystat{'Aborted_connects'} / $mystat{'Connections'} ) * 100 ); } if ( $mystat{'Questions'} > 0 ) { $mycalc{'total_reads'} = $mystat{'Com_select'}; $mycalc{'total_writes'} = $mystat{'Com_delete'} + $mystat{'Com_insert'} + $mystat{'Com_update'} + $mystat{'Com_replace'}; if ( $mycalc{'total_reads'} == 0 ) { $mycalc{'pct_reads'} = 0; $mycalc{'pct_writes'} = 100; } else { $mycalc{'pct_reads'} = int( ( $mycalc{'total_reads'} / ( $mycalc{'total_reads'} + $mycalc{'total_writes'} ) ) * 100 ); $mycalc{'pct_writes'} = 100 - $mycalc{'pct_reads'}; } } # InnoDB if ( $myvar{'have_innodb'} eq "YES" ) { $mycalc{'innodb_log_size_pct'} = ( $myvar{'innodb_log_file_size'} * $myvar{'innodb_log_files_in_group'} * 100 / $myvar{'innodb_buffer_pool_size'} ); } # InnoDB Buffer pool read cache efficiency ( $mystat{'Innodb_buffer_pool_read_requests'}, $mystat{'Innodb_buffer_pool_reads'} ) = ( 1, 1 ) unless defined $mystat{'Innodb_buffer_pool_reads'}; $mycalc{'pct_read_efficiency'} = percentage( ( $mystat{'Innodb_buffer_pool_read_requests'} - $mystat{'Innodb_buffer_pool_reads'} ), $mystat{'Innodb_buffer_pool_read_requests'} ) if defined $mystat{'Innodb_buffer_pool_read_requests'}; debugprint "pct_read_efficiency: " . $mycalc{'pct_read_efficiency'} . ""; debugprint "Innodb_buffer_pool_reads: " . $mystat{'Innodb_buffer_pool_reads'} . ""; debugprint "Innodb_buffer_pool_read_requests: " . $mystat{'Innodb_buffer_pool_read_requests'} . ""; # InnoDB log write cache efficiency ( $mystat{'Innodb_log_write_requests'}, $mystat{'Innodb_log_writes'} ) = ( 1, 1 ) unless defined $mystat{'Innodb_log_writes'}; $mycalc{'pct_write_efficiency'} = percentage( ( $mystat{'Innodb_log_write_requests'} - $mystat{'Innodb_log_writes'} ), $mystat{'Innodb_log_write_requests'} ) if defined $mystat{'Innodb_log_write_requests'}; debugprint "pct_write_efficiency: " . $mycalc{'pct_write_efficiency'} . ""; debugprint "Innodb_log_writes: " . $mystat{'Innodb_log_writes'} . ""; debugprint "Innodb_log_write_requests: " . $mystat{'Innodb_log_write_requests'} . ""; $mycalc{'pct_innodb_buffer_used'} = percentage( ( $mystat{'Innodb_buffer_pool_pages_total'} - $mystat{'Innodb_buffer_pool_pages_free'} ), $mystat{'Innodb_buffer_pool_pages_total'} ) if defined $mystat{'Innodb_buffer_pool_pages_total'}; # Binlog Cache if ( $myvar{'log_bin'} ne 'OFF' ) { $mycalc{'pct_binlog_cache'} = percentage( $mystat{'Binlog_cache_use'} - $mystat{'Binlog_cache_disk_use'}, $mystat{'Binlog_cache_use'} ); } } sub mysql_stats { subheaderprint "Performance Metrics"; # Show uptime, queries per second, connections, traffic stats my $qps; if ( $mystat{'Uptime'} > 0 ) { $qps = sprintf( "%.3f", $mystat{'Questions'} / $mystat{'Uptime'} ); } push( @generalrec, "MySQL was started within the last 24 hours - recommendations may be inaccurate" ) if ( $mystat{'Uptime'} < 86400 ); infoprint "Up for: " . pretty_uptime( $mystat{'Uptime'} ) . " (" . hr_num( $mystat{'Questions'} ) . " q [" . hr_num($qps) . " qps], " . hr_num( $mystat{'Connections'} ) . " conn," . " TX: " . hr_bytes_rnd( $mystat{'Bytes_sent'} ) . ", RX: " . hr_bytes_rnd( $mystat{'Bytes_received'} ) . ")"; infoprint "Reads / Writes: " . $mycalc{'pct_reads'} . "% / " . $mycalc{'pct_writes'} . "%"; # Binlog Cache if ( $myvar{'log_bin'} eq 'OFF' ) { infoprint "Binary logging is disabled"; } else { infoprint "Binary logging is enabled (GTID MODE: " . ( defined( $myvar{'gtid_mode'} ) ? $myvar{'gtid_mode'} : "OFF" ) . ")"; } # Memory usage infoprint "Physical Memory : " . hr_bytes($physical_memory); infoprint "Max MySQL memory : " . hr_bytes( $mycalc{'max_peak_memory'} ); infoprint "Other process memory: " . hr_bytes( get_other_process_memory() ); infoprint "Total buffers: " . hr_bytes( $mycalc{'server_buffers'} ) . " global + " . hr_bytes( $mycalc{'per_thread_buffers'} ) . " per thread ($myvar{'max_connections'} max threads)"; infoprint "P_S Max memory usage: " . hr_bytes_rnd( get_pf_memory() ); $result{'P_S'}{'memory'} = get_pf_memory(); $result{'P_S'}{'pretty_memory'} = hr_bytes_rnd( get_pf_memory() ); infoprint "Galera GCache Max memory usage: " . hr_bytes_rnd( get_gcache_memory() ); $result{'Galera'}{'GCache'}{'memory'} = get_gcache_memory(); $result{'Galera'}{'GCache'}{'pretty_memory'} = hr_bytes_rnd( get_gcache_memory() ); if ( $opt{buffers} ne 0 ) { infoprint "Global Buffers"; infoprint " +-- Key Buffer: " . hr_bytes( $myvar{'key_buffer_size'} ) . ""; infoprint " +-- Max Tmp Table: " . hr_bytes( $mycalc{'max_tmp_table_size'} ) . ""; if ( defined $myvar{'query_cache_type'} ) { infoprint "Query Cache Buffers"; infoprint " +-- Query Cache: " . $myvar{'query_cache_type'} . " - " . ( $myvar{'query_cache_type'} eq 0 | $myvar{'query_cache_type'} eq 'OFF' ? "DISABLED" : ( $myvar{'query_cache_type'} eq 1 ? "ALL REQUESTS" : "ON DEMAND" ) ) . ""; infoprint " +-- Query Cache Size: " . hr_bytes( $myvar{'query_cache_size'} ) . ""; } infoprint "Per Thread Buffers"; infoprint " +-- Read Buffer: " . hr_bytes( $myvar{'read_buffer_size'} ) . ""; infoprint " +-- Read RND Buffer: " . hr_bytes( $myvar{'read_rnd_buffer_size'} ) . ""; infoprint " +-- Sort Buffer: " . hr_bytes( $myvar{'sort_buffer_size'} ) . ""; infoprint " +-- Thread stack: " . hr_bytes( $myvar{'thread_stack'} ) . ""; infoprint " +-- Join Buffer: " . hr_bytes( $myvar{'join_buffer_size'} ) . ""; if ( $myvar{'log_bin'} ne 'OFF' ) { infoprint "Binlog Cache Buffers"; infoprint " +-- Binlog Cache: " . hr_bytes( $myvar{'binlog_cache_size'} ) . ""; } } if ( $arch && $arch == 32 && $mycalc{'max_used_memory'} > 2 * 1024 * 1024 * 1024 ) { badprint "Allocating > 2GB RAM on 32-bit systems can cause system instability"; badprint "Maximum reached memory usage: " . hr_bytes( $mycalc{'max_used_memory'} ) . " ($mycalc{'pct_max_used_memory'}% of installed RAM)"; } elsif ( $mycalc{'pct_max_used_memory'} > 85 ) { badprint "Maximum reached memory usage: " . hr_bytes( $mycalc{'max_used_memory'} ) . " ($mycalc{'pct_max_used_memory'}% of installed RAM)"; } else { goodprint "Maximum reached memory usage: " . hr_bytes( $mycalc{'max_used_memory'} ) . " ($mycalc{'pct_max_used_memory'}% of installed RAM)"; } if ( $mycalc{'pct_max_physical_memory'} > 85 ) { badprint "Maximum possible memory usage: " . hr_bytes( $mycalc{'max_peak_memory'} ) . " ($mycalc{'pct_max_physical_memory'}% of installed RAM)"; push( @generalrec, "Reduce your overall MySQL memory footprint for system stability" ); } else { goodprint "Maximum possible memory usage: " . hr_bytes( $mycalc{'max_peak_memory'} ) . " ($mycalc{'pct_max_physical_memory'}% of installed RAM)"; } if ( $physical_memory < ( $mycalc{'max_peak_memory'} + get_other_process_memory() ) ) { badprint "Overall possible memory usage with other process exceeded memory"; push( @generalrec, "Dedicate this server to your database for highest performance." ); } else { goodprint "Overall possible memory usage with other process is compatible with memory available"; } # Slow queries if ( $mycalc{'pct_slow_queries'} > 5 ) { badprint "Slow queries: $mycalc{'pct_slow_queries'}% (" . hr_num( $mystat{'Slow_queries'} ) . "/" . hr_num( $mystat{'Questions'} ) . ")"; } else { goodprint "Slow queries: $mycalc{'pct_slow_queries'}% (" . hr_num( $mystat{'Slow_queries'} ) . "/" . hr_num( $mystat{'Questions'} ) . ")"; } if ( $myvar{'long_query_time'} > 10 ) { push( @adjvars, "long_query_time (<= 10)" ); } if ( defined( $myvar{'log_slow_queries'} ) ) { if ( $myvar{'log_slow_queries'} eq "OFF" ) { push( @generalrec, "Enable the slow query log to troubleshoot bad queries" ); } } # Connections if ( $mycalc{'pct_connections_used'} > 85 ) { badprint "Highest connection usage: $mycalc{'pct_connections_used'}% ($mystat{'Max_used_connections'}/$myvar{'max_connections'})"; push( @adjvars, "max_connections (> " . $myvar{'max_connections'} . ")" ); push( @adjvars, "wait_timeout (< " . $myvar{'wait_timeout'} . ")", "interactive_timeout (< " . $myvar{'interactive_timeout'} . ")" ); push( @generalrec, "Reduce or eliminate persistent connections to reduce connection usage" ); } else { goodprint "Highest usage of available connections: $mycalc{'pct_connections_used'}% ($mystat{'Max_used_connections'}/$myvar{'max_connections'})"; } # Aborted Connections if ( $mycalc{'pct_connections_aborted'} > 3 ) { badprint "Aborted connections: $mycalc{'pct_connections_aborted'}% ($mystat{'Aborted_connects'}/$mystat{'Connections'})"; push( @generalrec, "Reduce or eliminate unclosed connections and network issues" ); } else { goodprint "Aborted connections: $mycalc{'pct_connections_aborted'}% ($mystat{'Aborted_connects'}/$mystat{'Connections'})"; } # name resolution if ( defined( $result{'Variables'}{'skip_networking'} ) && $result{'Variables'}{'skip_networking'} eq 'ON' ) { infoprint "Skipped name resolution test due to skip_networking=ON in system variables."; } elsif ( not defined( $result{'Variables'}{'skip_name_resolve'} ) ) { infoprint "Skipped name resolution test due to missing skip_name_resolve in system variables."; } elsif ( $result{'Variables'}{'skip_name_resolve'} eq 'OFF' ) { badprint "name resolution is active : a reverse name resolution is made for each new connection and can reduce performance"; push( @generalrec, "Configure your accounts with ip or subnets only, then update your configuration with skip-name-resolve=1" ); } # Query cache if ( !mysql_version_ge(4) ) { # MySQL versions < 4.01 don't support query caching push( @generalrec, "Upgrade MySQL to version 4+ to utilize query caching" ); } elsif ( mysql_version_eq(8) ) { infoprint "Query cache have been removed in MySQL 8"; #return; } elsif ( $myvar{'query_cache_size'} < 1 and $myvar{'query_cache_type'} eq "OFF" ) { goodprint "Query cache is disabled by default due to mutex contention on multiprocessor machines."; } elsif ( $mystat{'Com_select'} == 0 ) { badprint "Query cache cannot be analyzed - no SELECT statements executed"; } else { badprint "Query cache may be disabled by default due to mutex contention."; push( @adjvars, "query_cache_size (=0)" ); push( @adjvars, "query_cache_type (=0)" ); if ( $mycalc{'query_cache_efficiency'} < 20 ) { badprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}% (" . hr_num( $mystat{'Qcache_hits'} ) . " cached / " . hr_num( $mystat{'Qcache_hits'} + $mystat{'Com_select'} ) . " selects)"; push( @adjvars, "query_cache_limit (> " . hr_bytes_rnd( $myvar{'query_cache_limit'} ) . ", or use smaller result sets)" ); } else { goodprint "Query cache efficiency: $mycalc{'query_cache_efficiency'}% (" . hr_num( $mystat{'Qcache_hits'} ) . " cached / " . hr_num( $mystat{'Qcache_hits'} + $mystat{'Com_select'} ) . " selects)"; } if ( $mycalc{'query_cache_prunes_per_day'} > 98 ) { badprint "Query cache prunes per day: $mycalc{'query_cache_prunes_per_day'}"; if ( $myvar{'query_cache_size'} >= 128 * 1024 * 1024 ) { push( @generalrec, "Increasing the query_cache size over 128M may reduce performance" ); push( @adjvars, "query_cache_size (> " . hr_bytes_rnd( $myvar{'query_cache_size'} ) . ") [see warning above]" ); } else { push( @adjvars, "query_cache_size (> " . hr_bytes_rnd( $myvar{'query_cache_size'} ) . ")" ); } } else { goodprint "Query cache prunes per day: $mycalc{'query_cache_prunes_per_day'}"; } } # Sorting if ( $mycalc{'total_sorts'} == 0 ) { goodprint "No Sort requiring temporary tables"; } elsif ( $mycalc{'pct_temp_sort_table'} > 10 ) { badprint "Sorts requiring temporary tables: $mycalc{'pct_temp_sort_table'}% (" . hr_num( $mystat{'Sort_merge_passes'} ) . " temp sorts / " . hr_num( $mycalc{'total_sorts'} ) . " sorts)"; push( @adjvars, "sort_buffer_size (> " . hr_bytes_rnd( $myvar{'sort_buffer_size'} ) . ")" ); push( @adjvars, "read_rnd_buffer_size (> " . hr_bytes_rnd( $myvar{'read_rnd_buffer_size'} ) . ")" ); } else { goodprint "Sorts requiring temporary tables: $mycalc{'pct_temp_sort_table'}% (" . hr_num( $mystat{'Sort_merge_passes'} ) . " temp sorts / " . hr_num( $mycalc{'total_sorts'} ) . " sorts)"; } # Joins if ( $mycalc{'joins_without_indexes_per_day'} > 250 ) { badprint "Joins performed without indexes: $mycalc{'joins_without_indexes'}"; push( @adjvars, "join_buffer_size (> " . hr_bytes( $myvar{'join_buffer_size'} ) . ", or always use indexes with JOINs)" ); push( @generalrec, "Adjust your join queries to always utilize indexes" ); } else { goodprint "No joins without indexes"; # No joins have run without indexes } # Temporary tables if ( $mystat{'Created_tmp_tables'} > 0 ) { if ( $mycalc{'pct_temp_disk'} > 25 && $mycalc{'max_tmp_table_size'} < 256 * 1024 * 1024 ) { badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}% (" . hr_num( $mystat{'Created_tmp_disk_tables'} ) . " on disk / " . hr_num( $mystat{'Created_tmp_tables'} ) . " total)"; push( @adjvars, "tmp_table_size (> " . hr_bytes_rnd( $myvar{'tmp_table_size'} ) . ")" ); push( @adjvars, "max_heap_table_size (> " . hr_bytes_rnd( $myvar{'max_heap_table_size'} ) . ")" ); push( @generalrec, "When making adjustments, make tmp_table_size/max_heap_table_size equal" ); push( @generalrec, "Reduce your SELECT DISTINCT queries which have no LIMIT clause" ); } elsif ($mycalc{'pct_temp_disk'} > 25 && $mycalc{'max_tmp_table_size'} >= 256 * 1024 * 1024 ) { badprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}% (" . hr_num( $mystat{'Created_tmp_disk_tables'} ) . " on disk / " . hr_num( $mystat{'Created_tmp_tables'} ) . " total)"; push( @generalrec, "Temporary table size is already large - reduce result set size" ); push( @generalrec, "Reduce your SELECT DISTINCT queries without LIMIT clauses" ); } else { goodprint "Temporary tables created on disk: $mycalc{'pct_temp_disk'}% (" . hr_num( $mystat{'Created_tmp_disk_tables'} ) . " on disk / " . hr_num( $mystat{'Created_tmp_tables'} ) . " total)"; } } else { goodprint "No tmp tables created on disk"; } # Thread cache if ( defined( $myvar{'thread_handling'} ) and $myvar{'thread_handling'} eq 'pool-of-threads' ) { # https://www.percona.com/doc/percona-server/LATEST/performance/threadpool.html # When thread pool is enabled, the value of the thread_cache_size variable # is ignored. The Threads_cached status variable contains 0 in this case. infoprint "Thread cache not used with thread_handling=pool-of-threads"; } else { if ( $myvar{'thread_cache_size'} eq 0 ) { badprint "Thread cache is disabled"; push( @generalrec, "Set thread_cache_size to 4 as a starting value" ); push( @adjvars, "thread_cache_size (start at 4)" ); } else { if ( $mycalc{'thread_cache_hit_rate'} <= 50 ) { badprint "Thread cache hit rate: $mycalc{'thread_cache_hit_rate'}% (" . hr_num( $mystat{'Threads_created'} ) . " created / " . hr_num( $mystat{'Connections'} ) . " connections)"; push( @adjvars, "thread_cache_size (> $myvar{'thread_cache_size'})" ); } else { goodprint "Thread cache hit rate: $mycalc{'thread_cache_hit_rate'}% (" . hr_num( $mystat{'Threads_created'} ) . " created / " . hr_num( $mystat{'Connections'} ) . " connections)"; } } } # Table cache my $table_cache_var = ""; if ( $mystat{'Open_tables'} > 0 ) { if ( $mycalc{'table_cache_hit_rate'} < 20 ) { badprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (" . hr_num( $mystat{'Open_tables'} ) . " open / " . hr_num( $mystat{'Opened_tables'} ) . " opened)"; if ( mysql_version_ge( 5, 1 ) ) { $table_cache_var = "table_open_cache"; } else { $table_cache_var = "table_cache"; } push( @adjvars, $table_cache_var . " (> " . $myvar{$table_cache_var} . ")" ); push( @generalrec, "Increase " . $table_cache_var . " gradually to avoid file descriptor limits" ); push( @generalrec, "Read this before increasing " . $table_cache_var . " over 64: https://bit.ly/1mi7c4C" ); push( @generalrec, "Read this before increasing for MariaDB" . " https://mariadb.com/kb/en/library/optimizing-table_open_cache/" ); push( @generalrec, "This is MyISAM only table_cache scalability problem, InnoDB not affected." ); push( @generalrec, "See more details here: https://bugs.mysql.com/bug.php?id=49177" ); push( @generalrec, "This bug already fixed in MySQL 5.7.9 and newer MySQL versions." ); push( @generalrec, "Beware that open_files_limit (" . $myvar{'open_files_limit'} . ") variable " ); push( @generalrec, "should be greater than $table_cache_var (" . $myvar{$table_cache_var} . ")" ); } else { goodprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (" . hr_num( $mystat{'Open_tables'} ) . " open / " . hr_num( $mystat{'Opened_tables'} ) . " opened)"; } } # Open files if ( defined $mycalc{'pct_files_open'} ) { if ( $mycalc{'pct_files_open'} > 85 ) { badprint "Open file limit used: $mycalc{'pct_files_open'}% (" . hr_num( $mystat{'Open_files'} ) . "/" . hr_num( $myvar{'open_files_limit'} ) . ")"; push( @adjvars, "open_files_limit (> " . $myvar{'open_files_limit'} . ")" ); } else { goodprint "Open file limit used: $mycalc{'pct_files_open'}% (" . hr_num( $mystat{'Open_files'} ) . "/" . hr_num( $myvar{'open_files_limit'} ) . ")"; } } # Table locks if ( defined $mycalc{'pct_table_locks_immediate'} ) { if ( $mycalc{'pct_table_locks_immediate'} < 95 ) { badprint "Table locks acquired immediately: $mycalc{'pct_table_locks_immediate'}%"; push( @generalrec, "Optimize queries and/or use InnoDB to reduce lock wait" ); } else { goodprint "Table locks acquired immediately: $mycalc{'pct_table_locks_immediate'}% (" . hr_num( $mystat{'Table_locks_immediate'} ) . " immediate / " . hr_num( $mystat{'Table_locks_waited'} + $mystat{'Table_locks_immediate'} ) . " locks)"; } } # Binlog cache if ( defined $mycalc{'pct_binlog_cache'} ) { if ( $mycalc{'pct_binlog_cache'} < 90 && $mystat{'Binlog_cache_use'} > 0 ) { badprint "Binlog cache memory access: " . $mycalc{'pct_binlog_cache'} . "% (" . ( $mystat{'Binlog_cache_use'} - $mystat{'Binlog_cache_disk_use'} ) . " Memory / " . $mystat{'Binlog_cache_use'} . " Total)"; push( @generalrec, "Increase binlog_cache_size (Actual value: " . $myvar{'binlog_cache_size'} . ")" ); push( @adjvars, "binlog_cache_size (" . hr_bytes( $myvar{'binlog_cache_size'} + 16 * 1024 * 1024 ) . ")" ); } else { goodprint "Binlog cache memory access: " . $mycalc{'pct_binlog_cache'} . "% (" . ( $mystat{'Binlog_cache_use'} - $mystat{'Binlog_cache_disk_use'} ) . " Memory / " . $mystat{'Binlog_cache_use'} . " Total)"; debugprint "Not enough data to validate binlog cache size\n" if $mystat{'Binlog_cache_use'} < 10; } } # Performance options if ( !mysql_version_ge( 5, 1 ) ) { push( @generalrec, "Upgrade to MySQL 5.5+ to use asynchronous write" ); } elsif ( $myvar{'concurrent_insert'} eq "OFF" ) { push( @generalrec, "Enable concurrent_insert by setting it to 'ON'" ); } elsif ( $myvar{'concurrent_insert'} eq 0 ) { push( @generalrec, "Enable concurrent_insert by setting it to 1" ); } } # Recommendations for MyISAM sub mysql_myisam { subheaderprint "MyISAM Metrics"; # Key buffer usage if ( defined( $mycalc{'pct_key_buffer_used'} ) ) { if ( $mycalc{'pct_key_buffer_used'} < 90 ) { badprint "Key buffer used: $mycalc{'pct_key_buffer_used'}% (" . hr_num( $myvar{'key_buffer_size'} * $mycalc{'pct_key_buffer_used'} / 100 ) . " used / " . hr_num( $myvar{'key_buffer_size'} ) . " cache)"; #push(@adjvars,"key_buffer_size (\~ ".hr_num( $myvar{'key_buffer_size'} * $mycalc{'pct_key_buffer_used'} / 100).")"); } else { goodprint "Key buffer used: $mycalc{'pct_key_buffer_used'}% (" . hr_num( $myvar{'key_buffer_size'} * $mycalc{'pct_key_buffer_used'} / 100 ) . " used / " . hr_num( $myvar{'key_buffer_size'} ) . " cache)"; } } else { # No queries have run that would use keys debugprint "Key buffer used: $mycalc{'pct_key_buffer_used'}% (" . hr_num( $myvar{'key_buffer_size'} * $mycalc{'pct_key_buffer_used'} / 100 ) . " used / " . hr_num( $myvar{'key_buffer_size'} ) . " cache)"; } # Key buffer if ( !defined( $mycalc{'total_myisam_indexes'} ) and $doremote == 1 ) { push( @generalrec, "Unable to calculate MyISAM indexes on remote MySQL server < 5.0.0" ); } elsif ( $mycalc{'total_myisam_indexes'} =~ /^fail$/ ) { badprint "Cannot calculate MyISAM index size - re-run script as root user"; } elsif ( $mycalc{'total_myisam_indexes'} == "0" ) { badprint "None of your MyISAM tables are indexed - add indexes immediately"; } else { if ( $myvar{'key_buffer_size'} < $mycalc{'total_myisam_indexes'} && $mycalc{'pct_keys_from_mem'} < 95 ) { badprint "Key buffer size / total MyISAM indexes: " . hr_bytes( $myvar{'key_buffer_size'} ) . "/" . hr_bytes( $mycalc{'total_myisam_indexes'} ) . ""; push( @adjvars, "key_buffer_size (> " . hr_bytes( $mycalc{'total_myisam_indexes'} ) . ")" ); } else { goodprint "Key buffer size / total MyISAM indexes: " . hr_bytes( $myvar{'key_buffer_size'} ) . "/" . hr_bytes( $mycalc{'total_myisam_indexes'} ) . ""; } if ( $mystat{'Key_read_requests'} > 0 ) { if ( $mycalc{'pct_keys_from_mem'} < 95 ) { badprint "Read Key buffer hit rate: $mycalc{'pct_keys_from_mem'}% (" . hr_num( $mystat{'Key_read_requests'} ) . " cached / " . hr_num( $mystat{'Key_reads'} ) . " reads)"; } else { goodprint "Read Key buffer hit rate: $mycalc{'pct_keys_from_mem'}% (" . hr_num( $mystat{'Key_read_requests'} ) . " cached / " . hr_num( $mystat{'Key_reads'} ) . " reads)"; } } else { # No queries have run that would use keys debugprint "Key buffer size / total MyISAM indexes: " . hr_bytes( $myvar{'key_buffer_size'} ) . "/" . hr_bytes( $mycalc{'total_myisam_indexes'} ) . ""; } if ( $mystat{'Key_write_requests'} > 0 ) { if ( $mycalc{'pct_wkeys_from_mem'} < 95 ) { badprint "Write Key buffer hit rate: $mycalc{'pct_wkeys_from_mem'}% (" . hr_num( $mystat{'Key_write_requests'} ) . " cached / " . hr_num( $mystat{'Key_writes'} ) . " writes)"; } else { goodprint "Write Key buffer hit rate: $mycalc{'pct_wkeys_from_mem'}% (" . hr_num( $mystat{'Key_write_requests'} ) . " cached / " . hr_num( $mystat{'Key_writes'} ) . " writes)"; } } else { # No queries have run that would use keys debugprint "Write Key buffer hit rate: $mycalc{'pct_wkeys_from_mem'}% (" . hr_num( $mystat{'Key_write_requests'} ) . " cached / " . hr_num( $mystat{'Key_writes'} ) . " writes)"; } } } # Recommendations for ThreadPool sub mariadb_threadpool { subheaderprint "ThreadPool Metrics"; # AriaDB unless ( defined $myvar{'have_threadpool'} && $myvar{'have_threadpool'} eq "YES" ) { infoprint "ThreadPool stat is disabled."; return; } infoprint "ThreadPool stat is enabled."; infoprint "Thread Pool Size: " . $myvar{'thread_pool_size'} . " thread(s)."; if ( $myvar{'version'} =~ /mariadb|percona/i ) { infoprint "Using default value is good enough for your version (" . $myvar{'version'} . ")"; return; } if ( $myvar{'have_innodb'} eq 'YES' ) { if ( $myvar{'thread_pool_size'} < 16 or $myvar{'thread_pool_size'} > 36 ) { badprint "thread_pool_size between 16 and 36 when using InnoDB storage engine."; push( @generalrec, "Thread pool size for InnoDB usage (" . $myvar{'thread_pool_size'} . ")" ); push( @adjvars, "thread_pool_size between 16 and 36 for InnoDB usage" ); } else { goodprint "thread_pool_size between 16 and 36 when using InnoDB storage engine."; } return; } if ( $myvar{'have_isam'} eq 'YES' ) { if ( $myvar{'thread_pool_size'} < 4 or $myvar{'thread_pool_size'} > 8 ) { badprint "thread_pool_size between 4 and 8 when using MyIsam storage engine."; push( @generalrec, "Thread pool size for MyIsam usage (" . $myvar{'thread_pool_size'} . ")" ); push( @adjvars, "thread_pool_size between 4 and 8 for MyIsam usage" ); } else { goodprint "thread_pool_size between 4 and 8 when using MyISAM storage engine."; } } } sub get_pf_memory { # Performance Schema return 0 unless defined $myvar{'performance_schema'}; return 0 if $myvar{'performance_schema'} eq 'OFF'; my @infoPFSMemory = grep /performance_schema.memory/, select_array("SHOW ENGINE PERFORMANCE_SCHEMA STATUS"); return 0 if scalar(@infoPFSMemory) == 0; $infoPFSMemory[0] =~ s/.*\s+(\d+)$/$1/g; return $infoPFSMemory[0]; } # Recommendations for Performance Schema sub mysqsl_pfs { subheaderprint "Performance schema"; # Performance Schema $myvar{'performance_schema'} = 'OFF' unless defined( $myvar{'performance_schema'} ); unless ( $myvar{'performance_schema'} eq 'ON' ) { infoprint "Performance schema is disabled."; if ( mysql_version_ge( 5, 6 ) ) { push( @generalrec, "Performance schema should be activated for better diagnostics" ); push( @adjvars, "performance_schema = ON enable PFS" ); } } else { if ( mysql_version_le( 5, 5 ) ) { push( @generalrec, "Performance schema shouldn't be activated for MySQL and MariaDB 5.5 and lower version" ); push( @adjvars, "performance_schema = OFF disable PFS" ); } } debugprint "Performance schema is " . $myvar{'performance_schema'}; infoprint "Memory used by P_S: " . hr_bytes( get_pf_memory() ); if ( mysql_version_eq( 10, 0 ) ) { push( @generalrec, "Performance schema shouldn't be activated for MariaDB 10.0 for performance issue" ); push( @adjvars, "performance_schema = OFF disable PFS" ); return; } unless ( grep /^sys$/, select_array("SHOW DATABASES") ) { infoprint "Sys schema isn't installed."; push( @generalrec, "Consider installing Sys schema from https://github.com/mysql/mysql-sys for MySQL" ) unless ( mysql_version_le( 5, 6 ) ); push( @generalrec, "Consider installing Sys schema from https://github.com/good-dba/mariadb-sys for MariaDB" ) unless ( mysql_version_eq( 10, 0 ) or mysql_version_eq( 5, 5 ) ); return; } else { infoprint "Sys schema is installed."; } return if ( $opt{pfstat} == 0 or $myvar{'performance_schema'} ne 'ON' ); infoprint "Sys schema Version: " . select_one("select sys_version from sys.version"); # Top user per connection subheaderprint "Performance schema: Top 5 user per connection"; my $nbL = 1; for my $lQuery ( select_array( 'select user, total_connections from sys.user_summary order by total_connections desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery conn(s)"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per statement subheaderprint "Performance schema: Top 5 user per statement"; $nbL = 1; for my $lQuery ( select_array( 'select user, statements from sys.user_summary order by statements desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery stmt(s)"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per statement latency subheaderprint "Performance schema: Top 5 user per statement latency"; $nbL = 1; for my $lQuery ( select_array( 'select user, statement_avg_latency from sys.x\\$user_summary order by statement_avg_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per lock latency subheaderprint "Performance schema: Top 5 user per lock latency"; $nbL = 1; for my $lQuery ( select_array( 'select user, lock_latency from sys.x\\$user_summary_by_statement_latency order by lock_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per full scans subheaderprint "Performance schema: Top 5 user per nb full scans"; $nbL = 1; for my $lQuery ( select_array( 'select user, full_scans from sys.x\\$user_summary_by_statement_latency order by full_scans desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per row_sent subheaderprint "Performance schema: Top 5 user per rows sent"; $nbL = 1; for my $lQuery ( select_array( 'select user, rows_sent from sys.x\\$user_summary_by_statement_latency order by rows_sent desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per row modified subheaderprint "Performance schema: Top 5 user per rows modified"; $nbL = 1; for my $lQuery ( select_array( 'select user, rows_affected from sys.x\\$user_summary_by_statement_latency order by rows_affected desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per io subheaderprint "Performance schema: Top 5 user per io"; $nbL = 1; for my $lQuery ( select_array( 'select user, file_ios from sys.x\\$user_summary order by file_ios desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top user per io latency subheaderprint "Performance schema: Top 5 user per io latency"; $nbL = 1; for my $lQuery ( select_array( 'select user, file_io_latency from sys.x\\$user_summary order by file_io_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per connection subheaderprint "Performance schema: Top 5 host per connection"; $nbL = 1; for my $lQuery ( select_array( 'select host, total_connections from sys.x\\$host_summary order by total_connections desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery conn(s)"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per statement subheaderprint "Performance schema: Top 5 host per statement"; $nbL = 1; for my $lQuery ( select_array( 'select host, statements from sys.x\\$host_summary order by statements desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery stmt(s)"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per statement latency subheaderprint "Performance schema: Top 5 host per statement latency"; $nbL = 1; for my $lQuery ( select_array( 'select host, statement_avg_latency from sys.x\\$host_summary order by statement_avg_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per lock latency subheaderprint "Performance schema: Top 5 host per lock latency"; $nbL = 1; for my $lQuery ( select_array( 'select host, lock_latency from sys.x\\$host_summary_by_statement_latency order by lock_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per full scans subheaderprint "Performance schema: Top 5 host per nb full scans"; $nbL = 1; for my $lQuery ( select_array( 'select host, full_scans from sys.x\\$host_summary_by_statement_latency order by full_scans desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per rows sent subheaderprint "Performance schema: Top 5 host per rows sent"; $nbL = 1; for my $lQuery ( select_array( 'select host, rows_sent from sys.x\\$host_summary_by_statement_latency order by rows_sent desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per rows modified subheaderprint "Performance schema: Top 5 host per rows modified"; $nbL = 1; for my $lQuery ( select_array( 'select host, rows_affected from sys.x\\$host_summary_by_statement_latency order by rows_affected desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per io subheaderprint "Performance schema: Top 5 host per io"; $nbL = 1; for my $lQuery ( select_array( 'select host, file_ios from sys.x\\$host_summary order by file_ios desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top 5 host per io latency subheaderprint "Performance schema: Top 5 host per io latency"; $nbL = 1; for my $lQuery ( select_array( 'select host, file_io_latency from sys.x\\$host_summary order by file_io_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top IO type order by total io subheaderprint "Performance schema: Top IO type order by total io"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select substring(event_name,14), SUM(total)AS total from sys.x\\$host_summary_by_file_io_type GROUP BY substring(event_name,14) ORDER BY total DESC;' ) ) { infoprint " +-- $nbL: $lQuery i/o"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top IO type order by total latency subheaderprint "Performance schema: Top IO type order by total latency"; $nbL = 1; for my $lQuery ( select_array( 'select substring(event_name,14), ROUND(SUM(total_latency),1) AS total_latency from sys.x\\$host_summary_by_file_io_type GROUP BY substring(event_name,14) ORDER BY total_latency DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top IO type order by max latency subheaderprint "Performance schema: Top IO type order by max latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select substring(event_name,14), MAX(max_latency) as max_latency from sys.x\\$host_summary_by_file_io_type GROUP BY substring(event_name,14) ORDER BY max_latency DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top Stages order by total io subheaderprint "Performance schema: Top Stages order by total io"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select substring(event_name,7), SUM(total)AS total from sys.x\\$host_summary_by_stages GROUP BY substring(event_name,7) ORDER BY total DESC;' ) ) { infoprint " +-- $nbL: $lQuery i/o"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top Stages order by total latency subheaderprint "Performance schema: Top Stages order by total latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select substring(event_name,7), ROUND(SUM(total_latency),1) AS total_latency from sys.x\\$host_summary_by_stages GROUP BY substring(event_name,7) ORDER BY total_latency DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top Stages order by avg latency subheaderprint "Performance schema: Top Stages order by avg latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select substring(event_name,7), MAX(avg_latency) as avg_latency from sys.x\\$host_summary_by_stages GROUP BY substring(event_name,7) ORDER BY avg_latency DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top host per table scans subheaderprint "Performance schema: Top 5 host per table scans"; $nbL = 1; for my $lQuery ( select_array( 'select host, table_scans from sys.x\\$host_summary order by table_scans desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # InnoDB Buffer Pool by schema subheaderprint "Performance schema: InnoDB Buffer Pool by schema"; $nbL = 1; for my $lQuery ( select_array( 'select object_schema, allocated, data, pages from sys.x\\$innodb_buffer_stats_by_schema ORDER BY pages DESC' ) ) { infoprint " +-- $nbL: $lQuery page(s)"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # InnoDB Buffer Pool by table subheaderprint "Performance schema: InnoDB Buffer Pool by table"; $nbL = 1; for my $lQuery ( select_array( 'select object_schema, object_name, allocated,data, pages from sys.x\\$innodb_buffer_stats_by_table ORDER BY pages DESC' ) ) { infoprint " +-- $nbL: $lQuery page(s)"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Process per allocated memory subheaderprint "Performance schema: Process per time"; $nbL = 1; for my $lQuery ( select_array( 'select user, Command AS PROC, time from sys.x\\$processlist ORDER BY time DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # InnoDB Lock Waits subheaderprint "Performance schema: InnoDB Lock Waits"; $nbL = 1; for my $lQuery ( select_array( 'select wait_age_secs, locked_table, locked_type, waiting_query from sys.x\\$innodb_lock_waits order by wait_age_secs DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Threads IO Latency subheaderprint "Performance schema: Thread IO Latency"; $nbL = 1; for my $lQuery ( select_array( 'select user, total_latency, max_latency from sys.x\\$io_by_thread_by_latency order by total_latency DESC;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # High Cost SQL statements subheaderprint "Performance schema: Top 5 Most latency statements"; $nbL = 1; for my $lQuery ( select_array( 'select query, avg_latency from sys.x\\$statement_analysis order by avg_latency desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top 5% slower queries subheaderprint "Performance schema: Top 5 slower queries"; $nbL = 1; for my $lQuery ( select_array( 'select query, exec_count from sys.x\\$statements_with_runtimes_in_95th_percentile order by exec_count desc LIMIT 5' ) ) { infoprint " +-- $nbL: $lQuery s"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top 10 nb statement type subheaderprint "Performance schema: Top 10 nb statement type"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select statement, sum(total) as total from sys.x\\$host_summary_by_statement_type group by statement order by total desc LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top statement by total latency subheaderprint "Performance schema: Top statement by total latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select statement, sum(total_latency) as total from sys.x\\$host_summary_by_statement_type group by statement order by total desc LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top statement by lock latency subheaderprint "Performance schema: Top statement by lock latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select statement, sum(lock_latency) as total from sys.x\\$host_summary_by_statement_type group by statement order by total desc LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top statement by full scans subheaderprint "Performance schema: Top statement by full scans"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select statement, sum(full_scans) as total from sys.x\\$host_summary_by_statement_type group by statement order by total desc LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top statement by rows sent subheaderprint "Performance schema: Top statement by rows sent"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select statement, sum(rows_sent) as total from sys.x\\$host_summary_by_statement_type group by statement order by total desc LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Top statement by rows modified subheaderprint "Performance schema: Top statement by rows modified"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select statement, sum(rows_affected) as total from sys.x\\$host_summary_by_statement_type group by statement order by total desc LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Use temporary tables subheaderprint "Performance schema: Some queries using temp table"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select query from sys.x\\$statements_with_temp_tables LIMIT 20' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Unused Indexes subheaderprint "Performance schema: Unused indexes"; $nbL = 1; for my $lQuery ( select_array('select * from sys.schema_unused_indexes') ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Full table scans subheaderprint "Performance schema: Tables with full table scans"; $nbL = 1; for my $lQuery ( select_array( 'select * from sys.x\\$schema_tables_with_full_table_scans order by rows_full_scanned DESC' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Latest file IO by latency subheaderprint "Performance schema: Latest FILE IO by latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select thread, file, latency, operation from sys.x\\$latest_file_io ORDER BY latency LIMIT 10;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # FILE by IO read bytes subheaderprint "Performance schema: FILE by IO read bytes"; $nbL = 1; for my $lQuery ( select_array( 'select file, total_read from sys.x\\$io_global_by_file_by_bytes order by total_read DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # FILE by IO written bytes subheaderprint "Performance schema: FILE by IO written bytes"; $nbL = 1; for my $lQuery ( select_array( 'select file, total_written from sys.x\\$io_global_by_file_by_bytes order by total_written DESC LIMIT 15' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # file per IO total latency subheaderprint "Performance schema: file per IO total latency"; $nbL = 1; for my $lQuery ( select_array( 'select file, total_latency from sys.x\\$io_global_by_file_by_latency ORDER BY total_latency DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # file per IO read latency subheaderprint "Performance schema: file per IO read latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select file, read_latency from sys.x\\$io_global_by_file_by_latency ORDER BY read_latency DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # file per IO write latency subheaderprint "Performance schema: file per IO write latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select file, write_latency from sys.x\\$io_global_by_file_by_latency ORDER BY write_latency DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Event Wait by read bytes subheaderprint "Performance schema: Event Wait by read bytes"; $nbL = 1; for my $lQuery ( select_array( 'select event_name, total_read from sys.x\\$io_global_by_wait_by_bytes order by total_read DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Event Wait by write bytes subheaderprint "Performance schema: Event Wait written bytes"; $nbL = 1; for my $lQuery ( select_array( 'select event_name, total_written from sys.x\\$io_global_by_wait_by_bytes order by total_written DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # event per wait total latency subheaderprint "Performance schema: event per wait total latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select event_name, total_latency from sys.x\\$io_global_by_wait_by_latency ORDER BY total_latency DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # event per wait read latency subheaderprint "Performance schema: event per wait read latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select event_name, read_latency from sys.x\\$io_global_by_wait_by_latency ORDER BY read_latency DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # event per wait write latency subheaderprint "Performance schema: event per wait write latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select event_name, write_latency from sys.x\\$io_global_by_wait_by_latency ORDER BY write_latency DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); #schema_index_statistics # TOP 15 most read index subheaderprint "Performance schema: TOP 15 most read indexes"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name,index_name, rows_selected from sys.x\\$schema_index_statistics ORDER BY ROWs_selected DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 most used index subheaderprint "Performance schema: TOP 15 most modified indexes"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name,index_name, rows_inserted+rows_updated+rows_deleted AS changes from sys.x\\$schema_index_statistics ORDER BY rows_inserted+rows_updated+rows_deleted DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high read latency index subheaderprint "Performance schema: TOP 15 high read latency index"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name,index_name, select_latency from sys.x\\$schema_index_statistics ORDER BY select_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high insert latency index subheaderprint "Performance schema: TOP 15 most modified indexes"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name,index_name, insert_latency from sys.x\\$schema_index_statistics ORDER BY insert_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high update latency index subheaderprint "Performance schema: TOP 15 high update latency index"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name,index_name, update_latency from sys.x\\$schema_index_statistics ORDER BY update_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high delete latency index subheaderprint "Performance schema: TOP 15 high delete latency index"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name,index_name, delete_latency from sys.x\\$schema_index_statistics ORDER BY delete_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 most read tables subheaderprint "Performance schema: TOP 15 most read tables"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name, rows_fetched from sys.x\\$schema_table_statistics ORDER BY ROWs_fetched DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 most used tables subheaderprint "Performance schema: TOP 15 most modified tables"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name, rows_inserted+rows_updated+rows_deleted AS changes from sys.x\\$schema_table_statistics ORDER BY rows_inserted+rows_updated+rows_deleted DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high read latency tables subheaderprint "Performance schema: TOP 15 high read latency tables"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name, fetch_latency from sys.x\\$schema_table_statistics ORDER BY fetch_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high insert latency tables subheaderprint "Performance schema: TOP 15 high insert latency tables"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name, insert_latency from sys.x\\$schema_table_statistics ORDER BY insert_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high update latency tables subheaderprint "Performance schema: TOP 15 high update latency tables"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name, update_latency from sys.x\\$schema_table_statistics ORDER BY update_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # TOP 15 high delete latency tables subheaderprint "Performance schema: TOP 15 high delete latency tables"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select table_schema, table_name, delete_latency from sys.x\\$schema_table_statistics ORDER BY delete_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); # Redundant indexes subheaderprint "Performance schema: Redundant indexes"; $nbL = 1; for my $lQuery ( select_array('use sys;select * from schema_redundant_indexes;') ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Tables not using InnoDB buffer"; $nbL = 1; for my $lQuery ( select_array( ' Select table_schema, table_name from sys.x\\$schema_table_statistics_with_buffer where innodb_buffer_allocated IS NULL;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Table not using InnoDB buffer"; $nbL = 1; for my $lQuery ( select_array( ' Select table_schema, table_name from sys.x\\$schema_table_statistics_with_buffer where innodb_buffer_allocated IS NULL;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Table not using InnoDB buffer"; $nbL = 1; for my $lQuery ( select_array( ' Select table_schema, table_name from sys.x\\$schema_table_statistics_with_buffer where innodb_buffer_allocated IS NULL;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Top 15 Tables using InnoDB buffer"; $nbL = 1; for my $lQuery ( select_array( 'select table_schema,table_name,innodb_buffer_allocated from sys.x\\$schema_table_statistics_with_buffer where innodb_buffer_allocated IS NOT NULL ORDER BY innodb_buffer_allocated DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Top 15 Tables with InnoDB buffer free"; $nbL = 1; for my $lQuery ( select_array( 'select table_schema,table_name,innodb_buffer_free from sys.x\\$schema_table_statistics_with_buffer where innodb_buffer_allocated IS NOT NULL ORDER BY innodb_buffer_free DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Top 15 Most executed queries"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, exec_count from sys.x\\$statement_analysis order by exec_count DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Latest SQL queries in errors or warnings"; $nbL = 1; for my $lQuery ( select_array( 'select query, last_seen from sys.x\\$statements_with_errors_or_warnings ORDER BY last_seen LIMIT 100;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Top 20 queries with full table scans"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, exec_count from sys.x\\$statements_with_full_table_scans order BY exec_count DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Last 50 queries with full table scans"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, last_seen from sys.x\\$statements_with_full_table_scans order BY last_seen DESC LIMIT 50;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 reader queries (95% percentile)"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query , rows_sent from sys.x\\$statements_with_runtimes_in_95th_percentile ORDER BY ROWs_sent DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 most row look queries (95% percentile)"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, rows_examined AS search from sys.x\\$statements_with_runtimes_in_95th_percentile ORDER BY rows_examined DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 total latency queries (95% percentile)"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, total_latency AS search from sys.x\\$statements_with_runtimes_in_95th_percentile ORDER BY total_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 max latency queries (95% percentile)"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, max_latency AS search from sys.x\\$statements_with_runtimes_in_95th_percentile ORDER BY max_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 average latency queries (95% percentile)"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, avg_latency AS search from sys.x\\$statements_with_runtimes_in_95th_percentile ORDER BY avg_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Top 20 queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, exec_count from sys.x\\$statements_with_sorting order BY exec_count DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Last 50 queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, last_seen from sys.x\\$statements_with_sorting order BY last_seen DESC LIMIT 50;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 row sorting queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query , rows_sorted from sys.x\\$statements_with_sorting ORDER BY ROWs_sorted DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 total latency queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, total_latency AS search from sys.x\\$statements_with_sorting ORDER BY total_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 merge queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, sort_merge_passes AS search from sys.x\\$statements_with_sorting ORDER BY sort_merge_passes DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 average sort merges queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, avg_sort_merges AS search from sys.x\\$statements_with_sorting ORDER BY avg_sort_merges DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 scans queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, sorts_using_scans AS search from sys.x\\$statements_with_sorting ORDER BY sorts_using_scans DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 range queries with sort"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, sort_using_range AS search from sys.x\\$statements_with_sorting ORDER BY sort_using_range DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); ################################################################################## #statements_with_temp_tables #mysql> desc statements_with_temp_tables; #+--------------------------+---------------------+------+-----+---------------------+-------+ #| Field | Type | Null | Key | Default | Extra | #+--------------------------+---------------------+------+-----+---------------------+-------+ #| query | longtext | YES | | NULL | | #| db | varchar(64) | YES | | NULL | | #| exec_count | bigint(20) unsigned | NO | | NULL | | #| total_latency | text | YES | | NULL | | #| memory_tmp_tables | bigint(20) unsigned | NO | | NULL | | #| disk_tmp_tables | bigint(20) unsigned | NO | | NULL | | #| avg_tmp_tables_per_query | decimal(21,0) | NO | | 0 | | #| tmp_tables_to_disk_pct | decimal(24,0) | NO | | 0 | | #| first_seen | timestamp | NO | | 0000-00-00 00:00:00 | | #| last_seen | timestamp | NO | | 0000-00-00 00:00:00 | | #| digest | varchar(32) | YES | | NULL | | #+--------------------------+---------------------+------+-----+---------------------+-------+ #11 rows in set (0,01 sec)# # subheaderprint "Performance schema: Top 20 queries with temp table"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, exec_count from sys.x\\$statements_with_temp_tables order BY exec_count DESC LIMIT 20;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: Last 50 queries with temp table"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, last_seen from sys.x\\$statements_with_temp_tables order BY last_seen DESC LIMIT 50;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 total latency queries with temp table"; $nbL = 1; for my $lQuery ( select_array( 'select db, query, total_latency AS search from sys.x\\$statements_with_temp_tables ORDER BY total_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 queries with temp table to disk"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select db, query, disk_tmp_tables from sys.x\\$statements_with_temp_tables ORDER BY disk_tmp_tables DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); ################################################################################## #wait_classes_global_by_latency #ysql> select * from wait_classes_global_by_latency; #-----------------+-------+---------------+-------------+-------------+-------------+ # event_class | total | total_latency | min_latency | avg_latency | max_latency | #-----------------+-------+---------------+-------------+-------------+-------------+ # wait/io/file | 15381 | 1.23 s | 0 ps | 80.12 us | 230.64 ms | # wait/io/table | 59 | 7.57 ms | 5.45 us | 128.24 us | 3.95 ms | # wait/lock/table | 69 | 3.22 ms | 658.84 ns | 46.64 us | 1.10 ms | #-----------------+-------+---------------+-------------+-------------+-------------+ # rows in set (0,00 sec) subheaderprint "Performance schema: TOP 15 class events by number"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select event_class, total from sys.x\\$wait_classes_global_by_latency ORDER BY total DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 30 events by number"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select events, total from sys.x\\$waits_global_by_latency ORDER BY total DESC LIMIT 30;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 class events by total latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select event_class, total_latency from sys.x\\$wait_classes_global_by_latency ORDER BY total_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 30 events by total latency"; $nbL = 1; for my $lQuery ( select_array( 'use sys;select events, total_latency from sys.x\\$waits_global_by_latency ORDER BY total_latency DESC LIMIT 30;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 15 class events by max latency"; $nbL = 1; for my $lQuery ( select_array( 'select event_class, max_latency from sys.x\\$wait_classes_global_by_latency ORDER BY max_latency DESC LIMIT 15;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); subheaderprint "Performance schema: TOP 30 events by max latency"; $nbL = 1; for my $lQuery ( select_array( 'select events, max_latency from sys.x\\$waits_global_by_latency ORDER BY max_latency DESC LIMIT 30;' ) ) { infoprint " +-- $nbL: $lQuery"; $nbL++; } infoprint "No information found or indicators deactivated." if ( $nbL == 1 ); } # Recommendations for Ariadb sub mariadb_ariadb { subheaderprint "AriaDB Metrics"; # AriaDB unless ( defined $myvar{'have_aria'} and $myvar{'have_aria'} eq "YES" ) { infoprint "AriaDB is disabled."; return; } infoprint "AriaDB is enabled."; # Aria pagecache if ( !defined( $mycalc{'total_aria_indexes'} ) and $doremote == 1 ) { push( @generalrec, "Unable to calculate Aria indexes on remote MySQL server < 5.0.0" ); } elsif ( $mycalc{'total_aria_indexes'} =~ /^fail$/ ) { badprint "Cannot calculate Aria index size - re-run script as root user"; } elsif ( $mycalc{'total_aria_indexes'} == "0" ) { badprint "None of your Aria tables are indexed - add indexes immediately"; } else { if ( $myvar{'aria_pagecache_buffer_size'} < $mycalc{'total_aria_indexes'} && $mycalc{'pct_aria_keys_from_mem'} < 95 ) { badprint "Aria pagecache size / total Aria indexes: " . hr_bytes( $myvar{'aria_pagecache_buffer_size'} ) . "/" . hr_bytes( $mycalc{'total_aria_indexes'} ) . ""; push( @adjvars, "aria_pagecache_buffer_size (> " . hr_bytes( $mycalc{'total_aria_indexes'} ) . ")" ); } else { goodprint "Aria pagecache size / total Aria indexes: " . hr_bytes( $myvar{'aria_pagecache_buffer_size'} ) . "/" . hr_bytes( $mycalc{'total_aria_indexes'} ) . ""; } if ( $mystat{'Aria_pagecache_read_requests'} > 0 ) { if ( $mycalc{'pct_aria_keys_from_mem'} < 95 ) { badprint "Aria pagecache hit rate: $mycalc{'pct_aria_keys_from_mem'}% (" . hr_num( $mystat{'Aria_pagecache_read_requests'} ) . " cached / " . hr_num( $mystat{'Aria_pagecache_reads'} ) . " reads)"; } else { goodprint "Aria pagecache hit rate: $mycalc{'pct_aria_keys_from_mem'}% (" . hr_num( $mystat{'Aria_pagecache_read_requests'} ) . " cached / " . hr_num( $mystat{'Aria_pagecache_reads'} ) . " reads)"; } } else { # No queries have run that would use keys } } } # Recommendations for TokuDB sub mariadb_tokudb { subheaderprint "TokuDB Metrics"; # AriaDB unless ( defined $myvar{'have_tokudb'} && $myvar{'have_tokudb'} eq "YES" ) { infoprint "TokuDB is disabled."; return; } infoprint "TokuDB is enabled."; # All is to done here } # Recommendations for XtraDB sub mariadb_xtradb { subheaderprint "XtraDB Metrics"; # XtraDB unless ( defined $myvar{'have_xtradb'} && $myvar{'have_xtradb'} eq "YES" ) { infoprint "XtraDB is disabled."; return; } infoprint "XtraDB is enabled."; infoprint "Note that MariaDB 10.2 makes use of InnoDB, not XtraDB." # All is to done here } # Recommendations for RocksDB sub mariadb_rockdb { subheaderprint "RocksDB Metrics"; # RocksDB unless ( defined $myvar{'have_rocksdb'} && $myvar{'have_rocksdb'} eq "YES" ) { infoprint "RocksDB is disabled."; return; } infoprint "RocksDB is enabled."; # All is to do here } # Recommendations for Spider sub mariadb_spider { subheaderprint "Spider Metrics"; # Spider unless ( defined $myvar{'have_spider'} && $myvar{'have_spider'} eq "YES" ) { infoprint "Spider is disabled."; return; } infoprint "Spider is enabled."; # All is to do here } # Recommendations for Connect sub mariadb_connect { subheaderprint "Connect Metrics"; # Connect unless ( defined $myvar{'have_connect'} && $myvar{'have_connect'} eq "YES" ) { infoprint "Connect is disabled."; return; } infoprint "Connect is enabled."; # All is to do here } # Perl trim function to remove whitespace from the start and end of the string sub trim { my $string = shift; return "" unless defined($string); $string =~ s/^\s+//; $string =~ s/\s+$//; return $string; } sub get_wsrep_options { return () unless defined $myvar{'wsrep_provider_options'}; my @galera_options = split /;/, $myvar{'wsrep_provider_options'}; my $wsrep_slave_threads = $myvar{'wsrep_slave_threads'}; push @galera_options, ' wsrep_slave_threads = ' . $wsrep_slave_threads; @galera_options = remove_cr @galera_options; @galera_options = remove_empty @galera_options; debugprint Dumper( \@galera_options ); return @galera_options; } sub get_gcache_memory { my $gCacheMem = hr_raw( get_wsrep_option('gcache.size') ); return 0 unless defined $gCacheMem and $gCacheMem ne ''; return $gCacheMem; } sub get_wsrep_option { my $key = shift; return '' unless defined $myvar{'wsrep_provider_options'}; my @galera_options = get_wsrep_options; return '' unless scalar(@galera_options) > 0; my @memValues = grep /\s*$key =/, @galera_options; my $memValue = $memValues[0]; return 0 unless defined $memValue; $memValue =~ s/.*=\s*(.+)$/$1/g; return $memValue; } # Recommendations for Galera sub mariadb_galera { subheaderprint "Galera Metrics"; # Galera Cluster unless ( defined $myvar{'have_galera'} && $myvar{'have_galera'} eq "YES" ) { infoprint "Galera is disabled."; return; } infoprint "Galera is enabled."; debugprint "Galera variables:"; foreach my $gvar ( keys %myvar ) { next unless $gvar =~ /^wsrep.*/; next if $gvar eq 'wsrep_provider_options'; debugprint "\t" . trim($gvar) . " = " . $myvar{$gvar}; $result{'Galera'}{'variables'}{$gvar} = $myvar{$gvar}; } if ( not defined( $myvar{'wsrep_on'} ) or $myvar{'wsrep_on'} ne "ON" ) { infoprint "Galera is disabled."; return; } debugprint "Galera wsrep provider Options:"; my @galera_options = get_wsrep_options; $result{'Galera'}{'wsrep options'} = get_wsrep_options(); foreach my $gparam (@galera_options) { debugprint "\t" . trim($gparam); } debugprint "Galera status:"; foreach my $gstatus ( keys %mystat ) { next unless $gstatus =~ /^wsrep.*/; debugprint "\t" . trim($gstatus) . " = " . $mystat{$gstatus}; $result{'Galera'}{'status'}{$gstatus} = $myvar{$gstatus}; } infoprint "GCache is using " . hr_bytes_rnd( get_wsrep_option('gcache.mem_size') ); #my @primaryKeysNbTables=(); my @primaryKeysNbTables = select_array( "Select CONCAT(c.table_schema,CONCAT('.', c.table_name)) from information_schema.columns c join information_schema.tables t using (TABLE_SCHEMA, TABLE_NAME) where c.table_schema not in ('mysql', 'information_schema', 'performance_schema') and t.table_type != 'VIEW' group by c.table_schema,c.table_name having sum(if(c.column_key in ('PRI','UNI'), 1,0)) = 0" ); infoprint "CPU core detected : " . (cpu_cores); infoprint "wsrep_slave_threads: " . get_wsrep_option('wsrep_slave_threads'); if ( get_wsrep_option('wsrep_slave_threads') > ( (cpu_cores) * 4 ) or get_wsrep_option('wsrep_slave_threads') < ( (cpu_cores) * 2 ) ) { badprint "wsrep_slave_threads is not equal to 2, 3 or 4 times number of CPU(s)"; push @adjvars, "wsrep_slave_threads = " . ( (cpu_cores) * 4 ); } else { goodprint "wsrep_slave_threads is equal to 2, 3 or 4 times number of CPU(s)"; } if ( get_wsrep_option('gcs.fc_limit') != get_wsrep_option('wsrep_slave_threads') * 5 ) { badprint "gcs.fc_limit should be equal to 5 * wsrep_slave_threads"; push @adjvars, "gcs.fc_limit= wsrep_slave_threads * 5"; } else { goodprint "gcs.fc_limit should be equal to 5 * wsrep_slave_threads"; } if ( get_wsrep_option('wsrep_slave_threads') > 1 ) { infoprint "wsrep parallel slave can cause frequent inconsistency crash."; push @adjvars, "Set wsrep_slave_threads to 1 in case of HA_ERR_FOUND_DUPP_KEY crash on slave"; # check options for parallel slave if ( get_wsrep_option('wsrep_slave_FK_checks') eq "OFF" ) { badprint "wsrep_slave_FK_checks is off with parallel slave"; push @adjvars, "wsrep_slave_FK_checks should be ON when using parallel slave"; } # wsrep_slave_UK_checks seems useless in MySQL source code if ( $myvar{'innodb_autoinc_lock_mode'} != 2 ) { badprint "innodb_autoinc_lock_mode is incorrect with parallel slave"; push @adjvars, "innodb_autoinc_lock_mode should be 2 when using parallel slave"; } } if ( get_wsrep_option('gcs.fc_limit') != $myvar{'wsrep_slave_threads'} * 5 ) { badprint "gcs.fc_limit should be equal to 5 * wsrep_slave_threads"; push @adjvars, "gcs.fc_limit= wsrep_slave_threads * 5"; } else { goodprint "gcs.fc_limit is equal to 5 * wsrep_slave_threads"; } if ( get_wsrep_option('gcs.fc_factor') != 0.8 ) { badprint "gcs.fc_factor should be equal to 0.8"; push @adjvars, "gcs.fc_factor=0.8"; } else { goodprint "gcs.fc_factor is equal to 0.8"; } if ( get_wsrep_option('wsrep_flow_control_paused') > 0.02 ) { badprint "Fraction of time node pause flow control > 0.02"; } else { goodprint "Flow control fraction seems to be OK (wsrep_flow_control_paused<=0.02)"; } if ( scalar(@primaryKeysNbTables) > 0 ) { badprint "Following table(s) don't have primary key:"; foreach my $badtable (@primaryKeysNbTables) { badprint "\t$badtable"; push @{ $result{'Tables without PK'} }, $badtable; } } else { goodprint "All tables get a primary key"; } my @nonInnoDBTables = select_array( "select CONCAT(table_schema,CONCAT('.', table_name)) from information_schema.tables where ENGINE <> 'InnoDB' and table_schema not in ('mysql', 'performance_schema', 'information_schema')" ); if ( scalar(@nonInnoDBTables) > 0 ) { badprint "Following table(s) are not InnoDB table:"; push @generalrec, "Ensure that all table(s) are InnoDB tables for Galera replication"; foreach my $badtable (@nonInnoDBTables) { badprint "\t$badtable"; } } else { goodprint "All tables are InnoDB tables"; } if ( $myvar{'binlog_format'} ne 'ROW' ) { badprint "Binlog format should be in ROW mode."; push @adjvars, "binlog_format = ROW"; } else { goodprint "Binlog format is in ROW mode."; } if ( $myvar{'innodb_flush_log_at_trx_commit'} != 0 ) { badprint "InnoDB flush log at each commit should be disabled."; push @adjvars, "innodb_flush_log_at_trx_commit = 0"; } else { goodprint "InnoDB flush log at each commit is disabled for Galera."; } infoprint "Read consistency mode :" . $myvar{'wsrep_causal_reads'}; if ( defined( $myvar{'wsrep_cluster_name'} ) and $myvar{'wsrep_on'} eq "ON" ) { goodprint "Galera WsREP is enabled."; if ( defined( $myvar{'wsrep_cluster_address'} ) and trim("$myvar{'wsrep_cluster_address'}") ne "" ) { goodprint "Galera Cluster address is defined: " . $myvar{'wsrep_cluster_address'}; my @NodesTmp = split /,/, $myvar{'wsrep_cluster_address'}; my $nbNodes = @NodesTmp; infoprint "There are $nbNodes nodes in wsrep_cluster_address"; my $nbNodesSize = trim( $mystat{'wsrep_cluster_size'} ); if ( $nbNodesSize == 3 or $nbNodesSize == 5 ) { goodprint "There are $nbNodesSize nodes in wsrep_cluster_size."; } else { badprint "There are $nbNodesSize nodes in wsrep_cluster_size. Prefer 3 or 5 nodes architecture."; push @generalrec, "Prefer 3 or 5 nodes architecture."; } # wsrep_cluster_address doesn't include garbd nodes if ( $nbNodes > $nbNodesSize ) { badprint "All cluster nodes are not detected. wsrep_cluster_size less then node count in wsrep_cluster_address"; } else { goodprint "All cluster nodes detected."; } } else { badprint "Galera Cluster address is undefined"; push @adjvars, "set up wsrep_cluster_address variable for Galera replication"; } if ( defined( $myvar{'wsrep_cluster_name'} ) and trim( $myvar{'wsrep_cluster_name'} ) ne "" ) { goodprint "Galera Cluster name is defined: " . $myvar{'wsrep_cluster_name'}; } else { badprint "Galera Cluster name is undefined"; push @adjvars, "set up wsrep_cluster_name variable for Galera replication"; } if ( defined( $myvar{'wsrep_node_name'} ) and trim( $myvar{'wsrep_node_name'} ) ne "" ) { goodprint "Galera Node name is defined: " . $myvar{'wsrep_node_name'}; } else { badprint "Galera node name is undefined"; push @adjvars, "set up wsrep_node_name variable for Galera replication"; } if ( trim( $myvar{'wsrep_notify_cmd'} ) ne "" ) { goodprint "Galera Notify command is defined."; } else { badprint "Galera Notify command is not defined."; push( @adjvars, "set up parameter wsrep_notify_cmd to be notify" ); } if ( trim( $myvar{'wsrep_sst_method'} ) !~ "^xtrabackup.*" and trim( $myvar{'wsrep_sst_method'} ) !~ "^mariabackup" ) { badprint "Galera SST method is not xtrabackup based."; push( @adjvars, "set up parameter wsrep_sst_method to xtrabackup based parameter" ); } else { goodprint "SST Method is based on xtrabackup."; } if ( ( defined( $myvar{'wsrep_OSU_method'} ) && trim( $myvar{'wsrep_OSU_method'} ) eq "TOI" ) || ( defined( $myvar{'wsrep_osu_method'} ) && trim( $myvar{'wsrep_osu_method'} ) eq "TOI" ) ) { goodprint "TOI is default mode for upgrade."; } else { badprint "Schema upgrade are not replicated automatically"; push( @adjvars, "set up parameter wsrep_OSU_method to TOI" ); } infoprint "Max WsRep message : " . hr_bytes( $myvar{'wsrep_max_ws_size'} ); } else { badprint "Galera WsREP is disabled"; } if ( defined( $mystat{'wsrep_connected'} ) and $mystat{'wsrep_connected'} eq "ON" ) { goodprint "Node is connected"; } else { badprint "Node is disconnected"; } if ( defined( $mystat{'wsrep_ready'} ) and $mystat{'wsrep_ready'} eq "ON" ) { goodprint "Node is ready"; } else { badprint "Node is not ready"; } infoprint "Cluster status :" . $mystat{'wsrep_cluster_status'}; if ( defined( $mystat{'wsrep_cluster_status'} ) and $mystat{'wsrep_cluster_status'} eq "Primary" ) { goodprint "Galera cluster is consistent and ready for operations"; } else { badprint "Cluster is not consistent and ready"; } if ( $mystat{'wsrep_local_state_uuid'} eq $mystat{'wsrep_cluster_state_uuid'} ) { goodprint "Node and whole cluster at the same level: " . $mystat{'wsrep_cluster_state_uuid'}; } else { badprint "Node and whole cluster not the same level"; infoprint "Node state uuid: " . $mystat{'wsrep_local_state_uuid'}; infoprint "Cluster state uuid: " . $mystat{'wsrep_cluster_state_uuid'}; } if ( $mystat{'wsrep_local_state_comment'} eq 'Synced' ) { goodprint "Node is synced with whole cluster."; } else { badprint "Node is not synced"; infoprint "Node State : " . $mystat{'wsrep_local_state_comment'}; } if ( $mystat{'wsrep_local_cert_failures'} == 0 ) { goodprint "There is no certification failures detected."; } else { badprint "There is " . $mystat{'wsrep_local_cert_failures'} . " certification failure(s)detected."; } for my $key ( keys %mystat ) { if ( $key =~ /wsrep_|galera/i ) { debugprint "WSREP: $key = $mystat{$key}"; } } debugprint Dumper get_wsrep_options(); } # Recommendations for InnoDB sub mysql_innodb { subheaderprint "InnoDB Metrics"; # InnoDB unless ( defined $myvar{'have_innodb'} && $myvar{'have_innodb'} eq "YES" && defined $enginestats{'InnoDB'} ) { infoprint "InnoDB is disabled."; if ( mysql_version_ge( 5, 5 ) ) { badprint "InnoDB Storage engine is disabled. InnoDB is the default storage engine"; } return; } infoprint "InnoDB is enabled."; if ( $opt{buffers} ne 0 ) { infoprint "InnoDB Buffers"; if ( defined $myvar{'innodb_buffer_pool_size'} ) { infoprint " +-- InnoDB Buffer Pool: " . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . ""; } if ( defined $myvar{'innodb_buffer_pool_instances'} ) { infoprint " +-- InnoDB Buffer Pool Instances: " . $myvar{'innodb_buffer_pool_instances'} . ""; } if ( defined $myvar{'innodb_buffer_pool_chunk_size'} ) { infoprint " +-- InnoDB Buffer Pool Chunk Size: " . hr_bytes( $myvar{'innodb_buffer_pool_chunk_size'} ) . ""; } if ( defined $myvar{'innodb_additional_mem_pool_size'} ) { infoprint " +-- InnoDB Additional Mem Pool: " . hr_bytes( $myvar{'innodb_additional_mem_pool_size'} ) . ""; } if ( defined $myvar{'innodb_log_file_size'} ) { infoprint " +-- InnoDB Log File Size: " . hr_bytes( $myvar{'innodb_log_file_size'} ); } if ( defined $myvar{'innodb_log_files_in_group'} ) { infoprint " +-- InnoDB Log File In Group: " . $myvar{'innodb_log_files_in_group'}; } if ( defined $myvar{'innodb_log_files_in_group'} ) { infoprint " +-- InnoDB Total Log File Size: " . hr_bytes( $myvar{'innodb_log_files_in_group'} * $myvar{'innodb_log_file_size'} ) . "(" . $mycalc{'innodb_log_size_pct'} . " % of buffer pool)"; } if ( defined $myvar{'innodb_log_buffer_size'} ) { infoprint " +-- InnoDB Log Buffer: " . hr_bytes( $myvar{'innodb_log_buffer_size'} ); } if ( defined $mystat{'Innodb_buffer_pool_pages_free'} ) { infoprint " +-- InnoDB Log Buffer Free: " . hr_bytes( $mystat{'Innodb_buffer_pool_pages_free'} ) . ""; } if ( defined $mystat{'Innodb_buffer_pool_pages_total'} ) { infoprint " +-- InnoDB Log Buffer Used: " . hr_bytes( $mystat{'Innodb_buffer_pool_pages_total'} ) . ""; } } if ( defined $myvar{'innodb_thread_concurrency'} ) { infoprint "InnoDB Thread Concurrency: " . $myvar{'innodb_thread_concurrency'}; } # InnoDB Buffer Pool Size if ( $myvar{'innodb_file_per_table'} eq "ON" ) { goodprint "InnoDB File per table is activated"; } else { badprint "InnoDB File per table is not activated"; push( @adjvars, "innodb_file_per_table=ON" ); } # InnoDB Buffer Pool Size if ( $myvar{'innodb_buffer_pool_size'} > $enginestats{'InnoDB'} ) { goodprint "InnoDB buffer pool / data size: " . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . "/" . hr_bytes( $enginestats{'InnoDB'} ) . ""; } else { badprint "InnoDB buffer pool / data size: " . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . "/" . hr_bytes( $enginestats{'InnoDB'} ) . ""; push( @adjvars, "innodb_buffer_pool_size (>= " . hr_bytes( $enginestats{'InnoDB'} ) . ") if possible." ); } if ( $mycalc{'innodb_log_size_pct'} < 20 or $mycalc{'innodb_log_size_pct'} > 30 ) { badprint "Ratio InnoDB log file size / InnoDB Buffer pool size (" . $mycalc{'innodb_log_size_pct'} . " %): " . hr_bytes( $myvar{'innodb_log_file_size'} ) . " * " . $myvar{'innodb_log_files_in_group'} . "/" . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " should be equal to 25%"; push( @adjvars, "innodb_log_file_size should be (=" . hr_bytes_rnd( $myvar{'innodb_buffer_pool_size'} / $myvar{'innodb_log_files_in_group'} / 4 ) . ") if possible, so InnoDB total log files size equals to 25% of buffer pool size." ); push( @generalrec, "Before changing innodb_log_file_size and/or innodb_log_files_in_group read this: https://bit.ly/2TcGgtU" ); } else { goodprint "Ratio InnoDB log file size / InnoDB Buffer pool size: " . hr_bytes( $myvar{'innodb_log_file_size'} ) . " * " . $myvar{'innodb_log_files_in_group'} . "/" . hr_bytes( $myvar{'innodb_buffer_pool_size'} ) . " should be equal to 25%"; } # InnoDB Buffer Pool Instances (MySQL 5.6.6+) if ( defined( $myvar{'innodb_buffer_pool_instances'} ) ) { # Bad Value if > 64 if ( $myvar{'innodb_buffer_pool_instances'} > 64 ) { badprint "InnoDB buffer pool instances: " . $myvar{'innodb_buffer_pool_instances'} . ""; push( @adjvars, "innodb_buffer_pool_instances (<= 64)" ); } # InnoDB Buffer Pool Size > 1Go if ( $myvar{'innodb_buffer_pool_size'} > 1024 * 1024 * 1024 ) { # InnoDB Buffer Pool Size / 1Go = InnoDB Buffer Pool Instances limited to 64 max. # InnoDB Buffer Pool Size > 64Go my $max_innodb_buffer_pool_instances = int( $myvar{'innodb_buffer_pool_size'} / ( 1024 * 1024 * 1024 ) ); $max_innodb_buffer_pool_instances = 64 if ( $max_innodb_buffer_pool_instances > 64 ); if ( $myvar{'innodb_buffer_pool_instances'} != $max_innodb_buffer_pool_instances ) { badprint "InnoDB buffer pool instances: " . $myvar{'innodb_buffer_pool_instances'} . ""; push( @adjvars, "innodb_buffer_pool_instances(=" . $max_innodb_buffer_pool_instances . ")" ); } else { goodprint "InnoDB buffer pool instances: " . $myvar{'innodb_buffer_pool_instances'} . ""; } # InnoDB Buffer Pool Size < 1Go } else { if ( $myvar{'innodb_buffer_pool_instances'} != 1 ) { badprint "InnoDB buffer pool <= 1G and Innodb_buffer_pool_instances(!=1)."; push( @adjvars, "innodb_buffer_pool_instances (=1)" ); } else { goodprint "InnoDB buffer pool instances: " . $myvar{'innodb_buffer_pool_instances'} . ""; } } } # InnoDB Used Buffer Pool Size vs CHUNK size if ( !defined( $myvar{'innodb_buffer_pool_chunk_size'} ) ) { infoprint "InnoDB Buffer Pool Chunk Size not used or defined in your version"; } else { infoprint "Number of InnoDB Buffer Pool Chunk : " . int( $myvar{'innodb_buffer_pool_size'} ) / int( $myvar{'innodb_buffer_pool_chunk_size'} ) . " for " . $myvar{'innodb_buffer_pool_instances'} . " Buffer Pool Instance(s)"; if ( int( $myvar{'innodb_buffer_pool_size'} ) % ( int( $myvar{'innodb_buffer_pool_chunk_size'} ) * int( $myvar{'innodb_buffer_pool_instances'} ) ) eq 0 ) { goodprint "Innodb_buffer_pool_size aligned with Innodb_buffer_pool_chunk_size & Innodb_buffer_pool_instances"; } else { badprint "Innodb_buffer_pool_size aligned with Innodb_buffer_pool_chunk_size & Innodb_buffer_pool_instances"; #push( @adjvars, "Adjust innodb_buffer_pool_instances, innodb_buffer_pool_chunk_size with innodb_buffer_pool_size" ); push( @adjvars, "innodb_buffer_pool_size must always be equal to or a multiple of innodb_buffer_pool_chunk_size * innodb_buffer_pool_instances" ); } } # InnoDB Read efficiency if ( defined $mycalc{'pct_read_efficiency'} && $mycalc{'pct_read_efficiency'} < 90 ) { badprint "InnoDB Read buffer efficiency: " . $mycalc{'pct_read_efficiency'} . "% (" . ( $mystat{'Innodb_buffer_pool_read_requests'} - $mystat{'Innodb_buffer_pool_reads'} ) . " hits/ " . $mystat{'Innodb_buffer_pool_read_requests'} . " total)"; } else { goodprint "InnoDB Read buffer efficiency: " . $mycalc{'pct_read_efficiency'} . "% (" . ( $mystat{'Innodb_buffer_pool_read_requests'} - $mystat{'Innodb_buffer_pool_reads'} ) . " hits/ " . $mystat{'Innodb_buffer_pool_read_requests'} . " total)"; } # InnoDB Write efficiency if ( defined $mycalc{'pct_write_efficiency'} && $mycalc{'pct_write_efficiency'} < 90 ) { badprint "InnoDB Write Log efficiency: " . abs( $mycalc{'pct_write_efficiency'} ) . "% (" . abs( $mystat{'Innodb_log_write_requests'} - $mystat{'Innodb_log_writes'} ) . " hits/ " . $mystat{'Innodb_log_write_requests'} . " total)"; } else { goodprint "InnoDB Write log efficiency: " . $mycalc{'pct_write_efficiency'} . "% (" . ( $mystat{'Innodb_log_write_requests'} - $mystat{'Innodb_log_writes'} ) . " hits/ " . $mystat{'Innodb_log_write_requests'} . " total)"; } # InnoDB Log Waits if ( defined $mystat{'Innodb_log_waits'} && $mystat{'Innodb_log_waits'} > 0 ) { badprint "InnoDB log waits: " . percentage( $mystat{'Innodb_log_waits'}, $mystat{'Innodb_log_writes'} ) . "% (" . $mystat{'Innodb_log_waits'} . " waits / " . $mystat{'Innodb_log_writes'} . " writes)"; push( @adjvars, "innodb_log_buffer_size (>= " . hr_bytes_rnd( $myvar{'innodb_log_buffer_size'} ) . ")" ); } else { goodprint "InnoDB log waits: " . percentage( $mystat{'Innodb_log_waits'}, $mystat{'Innodb_log_writes'} ) . "% (" . $mystat{'Innodb_log_waits'} . " waits / " . $mystat{'Innodb_log_writes'} . " writes)"; } $result{'Calculations'} = {%mycalc}; } sub check_metadata_perf { subheaderprint "Analysis Performance Metrics"; if (defined $myvar{'innodb_stats_on_metadata'}) { infoprint "innodb_stats_on_metadata: " . $myvar{'innodb_stats_on_metadata'}; if ( $myvar{'innodb_stats_on_metadata'} eq 'ON' ) { badprint "Stat are updated during querying INFORMATION_SCHEMA."; push @adjvars, "SET innodb_stats_on_metadata = OFF"; #Disabling innodb_stats_on_metadata select_one("SET GLOBAL innodb_stats_on_metadata = OFF;"); return 1; } } goodprint "No stat updates during querying INFORMATION_SCHEMA."; return 0; } # Recommendations for Database metrics sub mysql_databases { return if ( $opt{dbstat} == 0 ); subheaderprint "Database Metrics"; unless ( mysql_version_ge( 5, 5 ) ) { infoprint "Skip Database metrics from information schema missing in this version"; return; } my @dblist = select_array( "SELECT DISTINCT TABLE_SCHEMA FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ( 'mysql', 'performance_schema', 'information_schema', 'sys' );" ); infoprint "There is " . scalar(@dblist) . " Database(s)."; my @totaldbinfo = split /\s/, select_one( "SELECT SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH), COUNT(TABLE_NAME),COUNT(DISTINCT(TABLE_COLLATION)),COUNT(DISTINCT(ENGINE)) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ( 'mysql', 'performance_schema', 'information_schema', 'sys' );" ); infoprint "All User Databases:"; infoprint " +-- TABLE : " . ( $totaldbinfo[4] eq 'NULL' ? 0 : $totaldbinfo[4] ) . ""; infoprint " +-- ROWS : " . ( $totaldbinfo[0] eq 'NULL' ? 0 : $totaldbinfo[0] ) . ""; infoprint " +-- DATA : " . hr_bytes( $totaldbinfo[1] ) . "(" . percentage( $totaldbinfo[1], $totaldbinfo[3] ) . "%)"; infoprint " +-- INDEX : " . hr_bytes( $totaldbinfo[2] ) . "(" . percentage( $totaldbinfo[2], $totaldbinfo[3] ) . "%)"; infoprint " +-- SIZE : " . hr_bytes( $totaldbinfo[3] ) . ""; infoprint " +-- COLLA : " . ( $totaldbinfo[5] eq 'NULL' ? 0 : $totaldbinfo[5] ) . " (" . ( join ", ", select_array( "SELECT DISTINCT(TABLE_COLLATION) FROM information_schema.TABLES;") ) . ")"; infoprint " +-- ENGIN : " . ( $totaldbinfo[6] eq 'NULL' ? 0 : $totaldbinfo[6] ) . " (" . ( join ", ", select_array("SELECT DISTINCT(ENGINE) FROM information_schema.TABLES;") ) . ")"; $result{'Databases'}{'All databases'}{'Rows'} = ( $totaldbinfo[0] eq 'NULL' ? 0 : $totaldbinfo[0] ); $result{'Databases'}{'All databases'}{'Data Size'} = $totaldbinfo[1]; $result{'Databases'}{'All databases'}{'Data Pct'} = percentage( $totaldbinfo[1], $totaldbinfo[3] ) . "%"; $result{'Databases'}{'All databases'}{'Index Size'} = $totaldbinfo[2]; $result{'Databases'}{'All databases'}{'Index Pct'} = percentage( $totaldbinfo[2], $totaldbinfo[3] ) . "%"; $result{'Databases'}{'All databases'}{'Total Size'} = $totaldbinfo[3]; print "\n" unless ( $opt{'silent'} or $opt{'json'} ); foreach (@dblist) { my @dbinfo = split /\s/, select_one( "SELECT TABLE_SCHEMA, SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH), COUNT(DISTINCT ENGINE),COUNT(TABLE_NAME),COUNT(DISTINCT(TABLE_COLLATION)),COUNT(DISTINCT(ENGINE)) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_' GROUP BY TABLE_SCHEMA ORDER BY TABLE_SCHEMA" ); next unless defined $dbinfo[0]; infoprint "Database: " . $dbinfo[0] . ""; infoprint " +-- TABLE: " . ( !defined( $dbinfo[6] ) or $dbinfo[6] eq 'NULL' ? 0 : $dbinfo[6] ) . ""; infoprint " +-- COLL : " . ( $dbinfo[7] eq 'NULL' ? 0 : $dbinfo[7] ) . " (" . ( join ", ", select_array( "SELECT DISTINCT(TABLE_COLLATION) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_';" ) ) . ")"; infoprint " +-- ROWS : " . ( !defined( $dbinfo[1] ) or $dbinfo[1] eq 'NULL' ? 0 : $dbinfo[1] ) . ""; infoprint " +-- DATA : " . hr_bytes( $dbinfo[2] ) . "(" . percentage( $dbinfo[2], $dbinfo[4] ) . "%)"; infoprint " +-- INDEX: " . hr_bytes( $dbinfo[3] ) . "(" . percentage( $dbinfo[3], $dbinfo[4] ) . "%)"; infoprint " +-- TOTAL: " . hr_bytes( $dbinfo[4] ) . ""; infoprint " +-- ENGIN : " . ( $dbinfo[8] eq 'NULL' ? 0 : $dbinfo[8] ) . " (" . ( join ", ", select_array( "SELECT DISTINCT(ENGINE) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_'" ) ) . ")"; badprint "Index size is larger than data size for $dbinfo[0] \n" if ( $dbinfo[2] ne 'NULL' ) and ( $dbinfo[3] ne 'NULL' ) and ( $dbinfo[2] < $dbinfo[3] ); badprint "There are " . $dbinfo[5] . " storage engines. Be careful. \n" if $dbinfo[5] > 1; $result{'Databases'}{ $dbinfo[0] }{'Rows'} = $dbinfo[1]; $result{'Databases'}{ $dbinfo[0] }{'Tables'} = $dbinfo[6]; $result{'Databases'}{ $dbinfo[0] }{'Collations'} = $dbinfo[7]; $result{'Databases'}{ $dbinfo[0] }{'Data Size'} = $dbinfo[2]; $result{'Databases'}{ $dbinfo[0] }{'Data Pct'} = percentage( $dbinfo[2], $dbinfo[4] ) . "%"; $result{'Databases'}{ $dbinfo[0] }{'Index Size'} = $dbinfo[3]; $result{'Databases'}{ $dbinfo[0] }{'Index Pct'} = percentage( $dbinfo[3], $dbinfo[4] ) . "%"; $result{'Databases'}{ $dbinfo[0] }{'Total Size'} = $dbinfo[4]; if ( $dbinfo[7] > 1 ) { badprint $dbinfo[7] . " different collations for database " . $dbinfo[0]; push( @generalrec, "Check all table collations are identical for all tables in " . $dbinfo[0] . " database." ); } else { goodprint $dbinfo[7] . " collation for " . $dbinfo[0] . " database."; } if ( $dbinfo[8] > 1 ) { badprint $dbinfo[8] . " different engines for database " . $dbinfo[0]; push( @generalrec, "Check all table engines are identical for all tables in " . $dbinfo[0] . " database." ); } else { goodprint $dbinfo[8] . " engine for " . $dbinfo[0] . " database."; } my @distinct_column_charset = select_array( "select DISTINCT(CHARACTER_SET_NAME) from information_schema.COLUMNS where CHARACTER_SET_NAME IS NOT NULL AND TABLE_SCHEMA ='$_'" ); infoprint "Charsets for $dbinfo[0] database table column: " . join( ', ', @distinct_column_charset ); if ( scalar(@distinct_column_charset) > 1 ) { badprint $dbinfo[0] . " table column(s) has several charsets defined for all text like column(s)."; push( @generalrec, "Limit charset for column to one charset if possible for " . $dbinfo[0] . " database." ); } else { goodprint $dbinfo[0] . " table column(s) has same charset defined for all text like column(s)."; } my @distinct_column_collation = select_array( "select DISTINCT(COLLATION_NAME) from information_schema.COLUMNS where COLLATION_NAME IS NOT NULL AND TABLE_SCHEMA ='$_'" ); infoprint "Collations for $dbinfo[0] database table column: " . join( ', ', @distinct_column_collation ); if ( scalar(@distinct_column_collation) > 1 ) { badprint $dbinfo[0] . " table column(s) has several collations defined for all text like column(s)."; push( @generalrec, "Limit collations for column to one collation if possible for " . $dbinfo[0] . " database." ); } else { goodprint $dbinfo[0] . " table column(s) has same collation defined for all text like column(s)."; } } } # Recommendations for database columns sub mysql_tables { return if ( $opt{tbstat} == 0 ); subheaderprint "Table Column Metrics"; unless ( mysql_version_ge( 5, 5 ) ) { infoprint "Skip Database metrics from information schema missing in this version"; return; } my @dblist = select_array( "SELECT DISTINCT TABLE_SCHEMA FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ( 'mysql', 'performance_schema', 'information_schema', 'sys' );" ); foreach (@dblist) { my $dbname = $_; next unless defined $_; infoprint "Database: " . $_ . ""; my @dbtable = select_array( "SELECT TABLE_NAME FROM information_schema.TABLES WHERE TABLE_SCHEMA='$dbname' AND TABLE_TYPE='BASE TABLE' ORDER BY TABLE_NAME" ); foreach (@dbtable) { my $tbname = $_; infoprint " +-- TABLE: $tbname"; my @tbcol = select_array( "SELECT COLUMN_NAME FROM information_schema.COLUMNS WHERE TABLE_SCHEMA='$dbname' AND TABLE_NAME='$tbname'" ); foreach (@tbcol) { my $ctype = select_one( "SELECT COLUMN_TYPE FROM information_schema.COLUMNS WHERE TABLE_SCHEMA='$dbname' AND TABLE_NAME='$tbname' AND COLUMN_NAME='$_' " ); my $isnull = select_one( "SELECT IS_NULLABLE FROM information_schema.COLUMNS WHERE TABLE_SCHEMA='$dbname' AND TABLE_NAME='$tbname' AND COLUMN_NAME='$_' " ); infoprint " +-- Column $tbname.$_:"; my $current_type = uc($ctype) . ( $isnull eq 'NO' ? " NOT NULL" : "" ); my $optimal_type = select_str_g( "Optimal_fieldtype", "SELECT \\`$_\\` FROM \\`$dbname\\`.\\`$tbname\\` PROCEDURE ANALYSE(100000)" ); if ( not defined($optimal_type) or $optimal_type eq '' ) { infoprint " Current Fieldtype: $current_type"; infoprint " Optimal Fieldtype: Not available"; } elsif ( $current_type ne $optimal_type ) { infoprint " Current Fieldtype: $current_type"; infoprint " Optimal Fieldtype: $optimal_type"; badprint "Consider changing type for column $_ in table $dbname.$tbname"; push( @generalrec, "ALTER TABLE \`$dbname\`.\`$tbname\` MODIFY \`$_\` $optimal_type;" ); } else { goodprint "$dbname.$tbname ($_) type: $current_type"; } } } } } # Recommendations for Indexes metrics sub mysql_indexes { return if ( $opt{idxstat} == 0 ); subheaderprint "Indexes Metrics"; unless ( mysql_version_ge( 5, 5 ) ) { infoprint "Skip Index metrics from information schema missing in this version"; return; } # unless ( mysql_version_ge( 5, 6 ) ) { # infoprint #"Skip Index metrics from information schema due to erroneous information provided in this version"; # return; # } my $selIdxReq = <<'ENDSQL'; SELECT CONCAT(CONCAT(t.TABLE_SCHEMA, '.'),t.TABLE_NAME) AS 'table' , CONCAT(CONCAT(CONCAT(s.INDEX_NAME, '('),s.COLUMN_NAME), ')') AS 'index' , s.SEQ_IN_INDEX AS 'seq' , s2.max_columns AS 'maxcol' , s.CARDINALITY AS 'card' , t.TABLE_ROWS AS 'est_rows' , INDEX_TYPE as type , ROUND(((s.CARDINALITY / IFNULL(t.TABLE_ROWS, 0.01)) * 100), 2) AS 'sel' FROM INFORMATION_SCHEMA.STATISTICS s INNER JOIN INFORMATION_SCHEMA.TABLES t ON s.TABLE_SCHEMA = t.TABLE_SCHEMA AND s.TABLE_NAME = t.TABLE_NAME INNER JOIN ( SELECT TABLE_SCHEMA , TABLE_NAME , INDEX_NAME , MAX(SEQ_IN_INDEX) AS max_columns FROM INFORMATION_SCHEMA.STATISTICS WHERE TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema') AND INDEX_TYPE <> 'FULLTEXT' GROUP BY TABLE_SCHEMA, TABLE_NAME, INDEX_NAME ) AS s2 ON s.TABLE_SCHEMA = s2.TABLE_SCHEMA AND s.TABLE_NAME = s2.TABLE_NAME AND s.INDEX_NAME = s2.INDEX_NAME WHERE t.TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema') AND t.TABLE_ROWS > 10 AND s.CARDINALITY IS NOT NULL AND (s.CARDINALITY / IFNULL(t.TABLE_ROWS, 0.01)) < 8.00 ORDER BY sel LIMIT 10; ENDSQL my @idxinfo = select_array($selIdxReq); infoprint "Worst selectivity indexes:"; foreach (@idxinfo) { debugprint "$_"; my @info = split /\s/; infoprint "Index: " . $info[1] . ""; infoprint " +-- COLUMN : " . $info[0] . ""; infoprint " +-- NB SEQS : " . $info[2] . " sequence(s)"; infoprint " +-- NB COLS : " . $info[3] . " column(s)"; infoprint " +-- CARDINALITY : " . $info[4] . " distinct values"; infoprint " +-- NB ROWS : " . $info[5] . " rows"; infoprint " +-- TYPE : " . $info[6]; infoprint " +-- SELECTIVITY : " . $info[7] . "%"; $result{'Indexes'}{ $info[1] }{'Column'} = $info[0]; $result{'Indexes'}{ $info[1] }{'Sequence number'} = $info[2]; $result{'Indexes'}{ $info[1] }{'Number of column'} = $info[3]; $result{'Indexes'}{ $info[1] }{'Cardinality'} = $info[4]; $result{'Indexes'}{ $info[1] }{'Row number'} = $info[5]; $result{'Indexes'}{ $info[1] }{'Index Type'} = $info[6]; $result{'Indexes'}{ $info[1] }{'Selectivity'} = $info[7]; if ( $info[7] < 25 ) { badprint "$info[1] has a low selectivity"; } } return unless ( defined( $myvar{'performance_schema'} ) and $myvar{'performance_schema'} eq 'ON' ); $selIdxReq = <<'ENDSQL'; SELECT CONCAT(CONCAT(object_schema,'.'),object_name) AS 'table', index_name FROM performance_schema.table_io_waits_summary_by_index_usage WHERE index_name IS NOT NULL AND count_star =0 AND index_name <> 'PRIMARY' AND object_schema != 'mysql' ORDER BY count_star, object_schema, object_name; ENDSQL @idxinfo = select_array($selIdxReq); infoprint "Unused indexes:"; push( @generalrec, "Remove unused indexes." ) if ( scalar(@idxinfo) > 0 ); foreach (@idxinfo) { debugprint "$_"; my @info = split /\s/; badprint "Index: $info[1] on $info[0] is not used."; push @{ $result{'Indexes'}{'Unused Indexes'} }, $info[0] . "." . $info[1]; } } # Take the two recommendation arrays and display them at the end of the output sub make_recommendations { $result{'Recommendations'} = \@generalrec; $result{'Adjust variables'} = \@adjvars; subheaderprint "Recommendations"; if ( @generalrec > 0 ) { prettyprint "General recommendations:"; foreach (@generalrec) { prettyprint " " . $_ . ""; } } if ( @adjvars > 0 ) { prettyprint "Variables to adjust:"; if ( $mycalc{'pct_max_physical_memory'} > 90 ) { prettyprint " *** MySQL's maximum memory usage is dangerously high ***\n" . " *** Add RAM before increasing MySQL buffer variables ***"; } foreach (@adjvars) { prettyprint " " . $_ . ""; } } if ( @generalrec == 0 && @adjvars == 0 ) { prettyprint "No additional performance recommendations are available."; } } sub close_outputfile { close($fh) if defined($fh); } sub headerprint { prettyprint " >> MySQLTuner $tunerversion - Major Hayden \n" . " >> Bug reports, feature requests, and downloads at http://mysqltuner.com/\n" . " >> Run with '--help' for additional options and output filtering"; } sub string2file { my $filename = shift; my $content = shift; open my $fh, q(>), $filename or die "Unable to open $filename in write mode. Please check permissions for this file or directory"; print $fh $content if defined($content); close $fh; debugprint $content if ( $opt{'debug'} ); } sub file2array { my $filename = shift; debugprint "* reading $filename" if ( $opt{'debug'} ); my $fh; open( $fh, q(<), "$filename" ) or die "Couldn't open $filename for reading: $!\n"; my @lines = <$fh>; close($fh); return @lines; } sub file2string { return join( '', file2array(@_) ); } my $templateModel; if ( $opt{'template'} ne 0 ) { $templateModel = file2string( $opt{'template'} ); } else { # DEFAULT REPORT TEMPLATE $templateModel = <<'END_TEMPLATE'; MySQLTuner Report

Result output

{$data}
END_TEMPLATE } sub dump_result { debugprint Dumper( \%result ) if ( $opt{'debug'} ); debugprint "HTML REPORT: $opt{'reportfile'}"; if ( $opt{'reportfile'} ne 0 ) { eval { require Text::Template }; eval { require JSON }; if ($@) { badprint "Text::Template Module is needed."; die "Text::Template Module is needed."; } my $json = JSON->new->allow_nonref; my $json_text = $json->pretty->encode( \%result ); my %vars = ( 'data' => \%result, 'debug' => $json_text, ); my $template; { no warnings 'once'; $template = Text::Template->new( TYPE => 'STRING', PREPEND => q{;}, SOURCE => $templateModel, DELIMITERS => [ '[%', '%]' ] ) or die "Couldn't construct template: $Text::Template::ERROR"; } open my $fh, q(>), $opt{'reportfile'} or die "Unable to open $opt{'reportfile'} in write mode. please check permissions for this file or directory"; $template->fill_in( HASH => \%vars, OUTPUT => $fh ); close $fh; } if ( $opt{'json'} ne 0 ) { eval { require JSON }; if ($@) { print "$bad JSON Module is needed.\n"; return 1; } my $json = JSON->new->allow_nonref; print $json->utf8(1)->pretty( ( $opt{'prettyjson'} ? 1 : 0 ) ) ->encode( \%result ); if ( $opt{'outputfile'} ne 0 ) { unlink $opt{'outputfile'} if ( -e $opt{'outputfile'} ); open my $fh, q(>), $opt{'outputfile'} or die "Unable to open $opt{'outputfile'} in write mode. please check permissions for this file or directory"; print $fh $json->utf8(1)->pretty( ( $opt{'prettyjson'} ? 1 : 0 ) ) ->encode( \%result ); close $fh; } } } sub which { my $prog_name = shift; my $path_string = shift; my @path_array = split /:/, $ENV{'PATH'}; for my $path (@path_array) { return "$path/$prog_name" if ( -x "$path/$prog_name" ); } return 0; } # --------------------------------------------------------------------------- # BEGIN 'MAIN' # --------------------------------------------------------------------------- headerprint; # Header Print validate_tuner_version; # Check last version mysql_setup; # Gotta login first debugprint "MySQL FINAL Client : $mysqlcmd $mysqllogin"; debugprint "MySQL Admin FINAL Client : $mysqladmincmd $mysqllogin"; #exit(0); os_setup; # Set up some OS variables get_all_vars; # Toss variables/status into hashes get_tuning_info; # Get information about the tuning connexion validate_mysql_version; # Check current MySQL version check_architecture; # Suggest 64-bit upgrade system_recommendations; # avoid to many service on the same host log_file_recommendations; # check log file content check_storage_engines; # Show enabled storage engines check_metadata_perf; # Show parameter impacting performance during analysis mysql_databases; # Show informations about databases mysql_tables; # Show informations about table column mysql_indexes; # Show informations about indexes security_recommendations; # Display some security recommendations cve_recommendations; # Display related CVE calculations; # Calculate everything we need mysql_stats; # Print the server stats mysqsl_pfs; # Print Performance schema info mariadb_threadpool; # Print MariaDB ThreadPool stats mysql_myisam; # Print MyISAM stats mysql_innodb; # Print InnoDB stats mariadb_ariadb; # Print MariaDB AriaDB stats mariadb_tokudb; # Print MariaDB Tokudb stats mariadb_xtradb; # Print MariaDB XtraDB stats #mariadb_rockdb; # Print MariaDB RockDB stats #mariadb_spider; # Print MariaDB Spider stats #mariadb_connect; # Print MariaDB Connect stats mariadb_galera; # Print MariaDB Galera Cluster stats get_replication_status; # Print replication info make_recommendations; # Make recommendations based on stats dump_result; # Dump result if debug is on close_outputfile; # Close reportfile if needed # --------------------------------------------------------------------------- # END 'MAIN' # --------------------------------------------------------------------------- 1; __END__ =pod =encoding UTF-8 =head1 NAME MySQLTuner 1.7.15 - MySQL High Performance Tuning Script =head1 IMPORTANT USAGE GUIDELINES To run the script with the default options, run the script without arguments Allow MySQL server to run for at least 24-48 hours before trusting suggestions Some routines may require root level privileges (script will provide warnings) You must provide the remote server's total memory when connecting to other servers =head1 CONNECTION AND AUTHENTICATION --host Connect to a remote host to perform tests (default: localhost) --socket Use a different socket for a local connection --port Port to use for connection (default: 3306) --user Username to use for authentication --userenv Name of env variable which contains username to use for authentication --pass Password to use for authentication --passenv Name of env variable which contains password to use for authentication --ssl-ca Path to public key --mysqladmin Path to a custom mysqladmin executable --mysqlcmd Path to a custom mysql executable --defaults-file Path to a custom .my.cnf =head1 PERFORMANCE AND REPORTING OPTIONS --skipsize Don't enumerate tables and their types/sizes (default: on) (Recommended for servers with many tables) --skippassword Don't perform checks on user passwords(default: off) --checkversion Check for updates to MySQLTuner (default: don't check) --updateversion Check for updates to MySQLTuner and update when newer version is available (default: don't check) --forcemem Amount of RAM installed in megabytes --forceswap Amount of swap memory configured in megabytes --passwordfile Path to a password file list(one password by line) =head1 OUTPUT OPTIONS --silent Don't output anything on screen --nogood Remove OK responses --nobad Remove negative/suggestion responses --noinfo Remove informational responses --debug Print debug information --noprocess Consider no other process is running --dbstat Print database information --nodbstat Don't Print database information --tbstat Print table information --notbstat Don't Print table information --idxstat Print index information --noidxstat Don't Print index information --sysstat Print system information --nosysstat Don't Print system information --pfstat Print Performance schema --nopfstat Don't Print Performance schema --verbose Prints out all options (default: no verbose, dbstat, idxstat, sysstat, tbstat, pfstat) --bannedports Ports banned separated by comma(,) --maxportallowed Number of ports opened allowed on this hosts --cvefile CVE File for vulnerability checks --nocolor Don't print output in color --json Print result as JSON string --buffers Print global and per-thread buffer values --outputfile Path to a output txt file --reportfile Path to a report txt file --template Path to a template file =head1 PERLDOC You can find documentation for this module with the perldoc command. perldoc mysqltuner =head2 INTERNALS L Internal documentation =head1 AUTHORS Major Hayden - major@mhtx.net =head1 CONTRIBUTORS =over 4 =item * Matthew Montgomery =item * Paul Kehrer =item * Dave Burgess =item * Jonathan Hinds =item * Mike Jackson =item * Nils Breunese =item * Shawn Ashlee =item * Luuk Vosslamber =item * Ville Skytta =item * Trent Hornibrook =item * Jason Gill =item * Mark Imbriaco =item * Greg Eden =item * Aubin Galinotti =item * Giovanni Bechis =item * Bill Bradford =item * Ryan Novosielski =item * Michael Scheidell =item * Blair Christensen =item * Hans du Plooy =item * Victor Trac =item * Everett Barnes =item * Tom Krouper =item * Gary Barrueto =item * Simon Greenaway =item * Adam Stein =item * Isart Montane =item * Baptiste M. =item * Cole Turner =item * Major Hayden =item * Joe Ashcraft =item * Jean-Marie Renouard =item * Stephan GroBberndt =item * Christian Loos =back =head1 SUPPORT Bug reports, feature requests, and downloads at http://mysqltuner.com/ Bug tracker can be found at https://github.com/major/MySQLTuner-perl/issues Maintained by Major Hayden (major\@mhtx.net) - Licensed under GPL =head1 SOURCE CODE L git clone https://github.com/major/MySQLTuner-perl.git =head1 COPYRIGHT AND LICENSE Copyright (C) 2006-2018 Major Hayden - major@mhtx.net For the latest updates, please visit http://mysqltuner.com/ Git repository available at https://github.com/major/MySQLTuner-perl This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . =cut # Local variables: # indent-tabs-mode: t # cperl-indent-level: 8 # perl-indent-level: 8 # End: