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https://github.com/major/MySQLTuner-perl.git
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1826 lines
73 KiB
Perl
Executable File
1826 lines
73 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# mysqltuner.pl - Version 1.4.8
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# High Performance MySQL Tuning Script
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# Copyright (C) 2006-2015 Major Hayden - major@mhtx.net
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#
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# For the latest updates, please visit http://mysqltuner.com/
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# Git repository available at http://github.com/major/MySQLTuner-perl
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# This project would not be possible without help from:
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# Matthew Montgomery Paul Kehrer Dave Burgess
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# Jonathan Hinds Mike Jackson Nils Breunese
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# Shawn Ashlee Luuk Vosslamber Ville Skytta
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# Trent Hornibrook Jason Gill Mark Imbriaco
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# Greg Eden Aubin Galinotti Giovanni Bechis
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# Bill Bradford Ryan Novosielski Michael Scheidell
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# Blair Christensen Hans du Plooy Victor Trac
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# Everett Barnes Tom Krouper Gary Barrueto
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# Simon Greenaway Adam Stein Isart Montane
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# Baptiste M. Cole Turner Major Hayden
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#
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# Inspired by Matthew Montgomery's tuning-primer.sh script:
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# http://forge.mysql.com/projects/view.php?id=44
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#
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use strict;
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use warnings;
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use diagnostics;
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use File::Spec;
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use Getopt::Long;
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use File::Basename;
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use Cwd 'abs_path';
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# Set up a few variables for use in the script
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my $tunerversion = "1.4.8";
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my (@adjvars, @generalrec);
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# Set defaults
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my %opt = (
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"nobad" => 0,
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"nogood" => 0,
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"noinfo" => 0,
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"debug" => 0,
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"nocolor" => 0,
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"forcemem" => 0,
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"forceswap" => 0,
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"host" => 0,
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"socket" => 0,
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"port" => 0,
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"user" => 0,
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"pass" => 0,
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"skipsize" => 0,
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"checkversion" => 0,
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"buffers" => 0,
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"passwordfile" => 0,
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"reportfile" => 0,
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"dbstat" => 0,
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"idxstat" => 0,
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"skippassword" => 0,
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);
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# Gather the options from the command line
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GetOptions(\%opt,
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'nobad',
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'nogood',
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'noinfo',
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'debug',
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'nocolor',
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'forcemem=i',
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'forceswap=i',
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'host=s',
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'socket=s',
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'port=i',
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'user=s',
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'pass=s',
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'skipsize',
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'checkversion',
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'mysqladmin=s',
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'mysqlcmd=s',
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'help',
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'buffers',
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'skippassword',
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'passwordfile=s',
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'reportfile=s',
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'silent',
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'dbstat',
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'idxstat',
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);
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if (defined $opt{'help'} && $opt{'help'} == 1) { usage(); }
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sub usage {
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# Shown with --help option passed
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print " MySQLTuner $tunerversion - MySQL High Performance Tuning Script\n".
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" Bug reports, feature requests, and downloads at http://mysqltuner.com/\n".
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" Maintained by Major Hayden (major\@mhtx.net) - Licensed under GPL\n".
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"\n".
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" Important Usage Guidelines:\n".
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" To run the script with the default options, run the script without arguments\n".
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" Allow MySQL server to run for at least 24-48 hours before trusting suggestions\n".
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" Some routines may require root level privileges (script will provide warnings)\n".
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" You must provide the remote server's total memory when connecting to other servers\n".
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"\n".
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" Connection and Authentication\n".
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" --host <hostname> Connect to a remote host to perform tests (default: localhost)\n".
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" --socket <socket> Use a different socket for a local connection\n".
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" --port <port> Port to use for connection (default: 3306)\n".
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" --user <username> Username to use for authentication\n".
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" --pass <password> Password to use for authentication\n".
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" --mysqladmin <path> Path to a custom mysqladmin executable\n".
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" --mysqlcmd <path> Path to a custom mysql executable\n".
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"\n".
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" Performance and Reporting Options\n".
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" --skipsize Don't enumerate tables and their types/sizes (default: on)\n".
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" (Recommended for servers with many tables)\n".
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" --skippassword Don't perform checks on user passwords(default: off)\n".
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" --checkversion Check for updates to MySQLTuner (default: don't check)\n".
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" --forcemem <size> Amount of RAM installed in megabytes\n".
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" --forceswap <size> Amount of swap memory configured in megabytes\n".
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" --passwordfile <path>Path to a password file list(one password by line)\n".
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" --reportfile <path> Path to a report txt file\n".
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"\n".
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" Output Options:\n".
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" --nogood Remove OK responses\n".
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" --nobad Remove negative/suggestion responses\n".
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" --noinfo Remove informational responses\n".
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" --debug Print debug information\n".
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" --dbstat Print database information\n".
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" --idxstat Print index information\n".
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" --nocolor Don't print output in color\n".
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" --buffers Print global and per-thread buffer values\n";
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exit;
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}
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my $devnull = File::Spec->devnull();
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my $basic_password_files=($opt{passwordfile} eq "0")? abs_path(dirname(__FILE__))."/basic_passwords.txt" : abs_path($opt{passwordfile}) ;
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# for RPM distributions
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$basic_password_files="/usr/share/mysqltuner/basic_passwords.txt" unless -f "$basic_password_files";
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#
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my $reportfile=undef;
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$reportfile=abs_path($opt{reportfile}) unless $opt{reportfile} eq "0";
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my $fh=undef;
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open($fh, '>', $reportfile) or die("Fail opening $reportfile") if defined($reportfile);
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$opt{nocolor} = 1 if defined($reportfile);
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# Setting up the colors for the print styles
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my $good = ($opt{nocolor} == 0)? "[\e[0;32mOK\e[0m]" : "[OK]" ;
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my $bad = ($opt{nocolor} == 0)? "[\e[0;31m!!\e[0m]" : "[!!]" ;
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my $info = ($opt{nocolor} == 0)? "[\e[0;34m--\e[0m]" : "[--]" ;
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my $deb = ($opt{nocolor} == 0)? "[\e[0;31mDG\e[0m]" : "[DG]" ;
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# Functions that handle the print styles
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sub prettyprint {
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print $_[0];
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print $fh $_[0] if defined($fh);
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}
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sub goodprint { prettyprint $good." ".$_[0] unless ($opt{nogood} == 1); }
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sub infoprint { prettyprint $info." ".$_[0] unless ($opt{noinfo} == 1); }
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sub badprint { prettyprint $bad. " ".$_[0] unless ($opt{nobad} == 1); }
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sub debugprint { prettyprint $deb. " ".$_[0] unless ($opt{debug} == 0); }
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sub redwrap { return ($opt{nocolor} == 0) ? "\e[0;31m".$_[0]."\e[0m" : $_[0] ; }
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sub greenwrap { return ($opt{nocolor} == 0) ? "\e[0;32m".$_[0]."\e[0m" : $_[0] ; }
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# Calculates the parameter passed in bytes, and then rounds it to one decimal place
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sub hr_bytes {
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my $num = shift;
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if ($num >= (1024**3)) { #GB
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return sprintf("%.1f",($num/(1024**3)))."G";
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} elsif ($num >= (1024**2)) { #MB
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return sprintf("%.1f",($num/(1024**2)))."M";
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} elsif ($num >= 1024) { #KB
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return sprintf("%.1f",($num/1024))."K";
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} else {
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return $num."B";
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}
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}
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# Calculates the parameter passed in bytes, and then rounds it to the nearest integer
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sub hr_bytes_rnd {
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my $num = shift;
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if ($num >= (1024**3)) { #GB
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return int(($num/(1024**3)))."G";
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} elsif ($num >= (1024**2)) { #MB
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return int(($num/(1024**2)))."M";
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} elsif ($num >= 1024) { #KB
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return int(($num/1024))."K";
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} else {
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return $num."B";
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}
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}
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# Calculates the parameter passed to the nearest power of 1000, then rounds it to the nearest integer
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sub hr_num {
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my $num = shift;
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if ($num >= (1000**3)) { # Billions
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return int(($num/(1000**3)))."B";
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} elsif ($num >= (1000**2)) { # Millions
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return int(($num/(1000**2)))."M";
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} elsif ($num >= 1000) { # Thousands
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return int(($num/1000))."K";
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} else {
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return $num;
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}
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}
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# Calculate Percentage
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sub percentage{
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my $value=shift;
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my $total=shift;
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$total=0 unless defined $total;
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return 100,00 if $total == 0;
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return sprintf("%.2f", ($value*100/$total) );
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}
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# Calculates uptime to display in a more attractive form
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sub pretty_uptime {
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my $uptime = shift;
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my $seconds = $uptime % 60;
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my $minutes = int(($uptime % 3600) / 60);
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my $hours = int(($uptime % 86400) / (3600));
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my $days = int($uptime / (86400));
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my $uptimestring;
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if ($days > 0) {
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$uptimestring = "${days}d ${hours}h ${minutes}m ${seconds}s";
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} elsif ($hours > 0) {
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$uptimestring = "${hours}h ${minutes}m ${seconds}s";
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} elsif ($minutes > 0) {
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$uptimestring = "${minutes}m ${seconds}s";
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} else {
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$uptimestring = "${seconds}s";
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}
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return $uptimestring;
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}
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# Retrieves the memory installed on this machine
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my ($physical_memory,$swap_memory,$duflags);
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sub os_setup {
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sub memerror {
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badprint "Unable to determine total memory/swap; use '--forcemem' and '--forceswap'\n";
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exit;
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}
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my $os = `uname`;
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$duflags = ($os =~ /Linux/) ? '-b' : '';
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if ($opt{'forcemem'} > 0) {
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$physical_memory = $opt{'forcemem'} * 1048576;
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infoprint "Assuming $opt{'forcemem'} MB of physical memory\n";
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if ($opt{'forceswap'} > 0) {
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$swap_memory = $opt{'forceswap'} * 1048576;
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infoprint "Assuming $opt{'forceswap'} MB of swap space\n";
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} else {
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$swap_memory = 0;
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badprint "Assuming 0 MB of swap space (use --forceswap to specify)\n";
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}
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} else {
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if ($os =~ /Linux/) {
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$physical_memory = `LANG=en free -b | grep Mem | awk '{print \$2}'` or memerror;
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$swap_memory = `LANG=en free -b | grep Swap | awk '{print \$2}'` or memerror;
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} elsif ($os =~ /Darwin/) {
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$physical_memory = `sysctl -n hw.memsize` or memerror;
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$swap_memory = `sysctl -n vm.swapusage | awk '{print \$3}' | sed 's/\..*\$//'` or memerror;
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} elsif ($os =~ /NetBSD|OpenBSD|FreeBSD/) {
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$physical_memory = `sysctl -n hw.physmem` or memerror;
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if ($physical_memory < 0) {
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$physical_memory = `sysctl -n hw.physmem64` or memerror;
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}
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$swap_memory = `swapctl -l | grep '^/' | awk '{ s+= \$2 } END { print s }'` or memerror;
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} elsif ($os =~ /BSD/) {
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$physical_memory = `sysctl -n hw.realmem` or memerror;
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$swap_memory = `swapinfo | grep '^/' | awk '{ s+= \$2 } END { print s }'`;
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} elsif ($os =~ /SunOS/) {
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$physical_memory = `/usr/sbin/prtconf | grep Memory | cut -f 3 -d ' '` or memerror;
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chomp($physical_memory);
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$physical_memory = $physical_memory*1024*1024;
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} elsif ($os =~ /AIX/) {
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$physical_memory = `lsattr -El sys0 | grep realmem | awk '{print \$2}'` or memerror;
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chomp($physical_memory);
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$physical_memory = $physical_memory*1024;
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$swap_memory = `lsps -as | awk -F"(MB| +)" '/MB /{print \$2}'` or memerror;
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chomp($swap_memory);
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$swap_memory = $swap_memory*1024*1024;
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}
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}
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chomp($physical_memory);
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}
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# Checks to see if a MySQL login is possible
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my ($mysqllogin,$doremote,$remotestring,$mysqlcmd);
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sub mysql_setup {
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$doremote = 0;
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$remotestring = '';
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my $mysqladmincmd;
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if ($opt{mysqladmin}) {
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$mysqladmincmd = $opt{mysqladmin};
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} else {
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$mysqladmincmd = `which mysqladmin`;
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}
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chomp($mysqladmincmd);
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if (! -e $mysqladmincmd && $opt{mysqladmin}) {
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badprint "Unable to find the mysqladmin command you specified: ".$mysqladmincmd."\n";
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exit;
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} elsif (! -e $mysqladmincmd) {
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badprint "Couldn't find mysqladmin in your \$PATH. Is MySQL installed?\n";
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exit;
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}
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if ($opt{mysqlcmd}) {
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$mysqlcmd = $opt{mysqlcmd};
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} else {
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$mysqlcmd = `which mysql`;
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}
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chomp($mysqlcmd);
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if (! -e $mysqlcmd && $opt{mysqlcmd}) {
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badprint "Unable to find the mysql command you specified: ".$mysqlcmd."\n";
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exit;
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} elsif (! -e $mysqlcmd) {
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badprint "Couldn't find mysql in your \$PATH. Is MySQL installed?\n";
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exit;
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}
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# Are we being asked to connect via a socket?
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if ($opt{socket} ne 0) {
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$remotestring = " -S $opt{socket}";
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}
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# Are we being asked to connect to a remote server?
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if ($opt{host} ne 0) {
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chomp($opt{host});
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$opt{port} = ($opt{port} eq 0)? 3306 : $opt{port} ;
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# If we're doing a remote connection, but forcemem wasn't specified, we need to exit
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if ($opt{'forcemem'} eq 0) {
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badprint "The --forcemem option is required for remote connections\n";
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exit;
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}
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infoprint "Performing tests on $opt{host}:$opt{port}\n";
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$remotestring = " -h $opt{host} -P $opt{port}";
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$doremote = 1;
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}
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# Did we already get a username and password passed on the command line?
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if ($opt{user} ne 0 and $opt{pass} ne 0) {
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$mysqllogin = "-u $opt{user} -p'$opt{pass}'".$remotestring;
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my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`;
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if ($loginstatus =~ /mysqld is alive/) {
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goodprint "Logged in using credentials passed on the command line\n";
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return 1;
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} else {
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badprint "Attempted to use login credentials, but they were invalid\n";
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exit 0;
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}
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}
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my $svcprop = `which svcprop 2>/dev/null`;
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if (substr($svcprop, 0, 1) =~ "/") {
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# We are on solaris
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(my $mysql_login = `svcprop -p quickbackup/username svc:/network/mysql-quickbackup:default`) =~ s/\s+$//;
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(my $mysql_pass = `svcprop -p quickbackup/password svc:/network/mysql-quickbackup:default`) =~ s/\s+$//;
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if ( substr($mysql_login, 0, 7) ne "svcprop" ) {
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# mysql-quickbackup is installed
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$mysqllogin = "-u $mysql_login -p$mysql_pass";
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my $loginstatus = `mysqladmin $mysqllogin ping 2>&1`;
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if ($loginstatus =~ /mysqld is alive/) {
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goodprint "Logged in using credentials from mysql-quickbackup.\n";
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return 1;
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} else {
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badprint "Attempted to use login credentials from mysql-quickbackup, but they failed.\n";
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exit 0;
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}
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}
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} elsif ( -r "/etc/psa/.psa.shadow" and $doremote == 0 ) {
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# It's a Plesk box, use the available credentials
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$mysqllogin = "-u admin -p`cat /etc/psa/.psa.shadow`";
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my $loginstatus = `$mysqladmincmd ping $mysqllogin 2>&1`;
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unless ($loginstatus =~ /mysqld is alive/) {
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badprint "Attempted to use login credentials from Plesk, but they failed.\n";
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exit 0;
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}
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} elsif ( -r "/usr/local/directadmin/conf/mysql.conf" and $doremote == 0 ){
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# It's a DirectAdmin box, use the available credentials
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my $mysqluser=`cat /usr/local/directadmin/conf/mysql.conf | egrep '^user=.*'`;
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my $mysqlpass=`cat /usr/local/directadmin/conf/mysql.conf | egrep '^passwd=.*'`;
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$mysqluser =~ s/user=//;
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$mysqluser =~ s/[\r\n]//;
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$mysqlpass =~ s/passwd=//;
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$mysqlpass =~ s/[\r\n]//;
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$mysqllogin = "-u $mysqluser -p$mysqlpass";
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my $loginstatus = `mysqladmin ping $mysqllogin 2>&1`;
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unless ($loginstatus =~ /mysqld is alive/) {
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badprint "Attempted to use login credentials from DirectAdmin, but they failed.\n";
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exit 0;
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}
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} elsif ( -r "/etc/mysql/debian.cnf" and $doremote == 0 ){
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# We have a debian maintenance account, use it
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$mysqllogin = "--defaults-file=/etc/mysql/debian.cnf";
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my $loginstatus = `$mysqladmincmd $mysqllogin ping 2>&1`;
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if ($loginstatus =~ /mysqld is alive/) {
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goodprint "Logged in using credentials from debian maintenance account.\n";
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return 1;
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} else {
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badprint "Attempted to use login credentials from debian maintenance account, but they failed.\n";
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exit 0;
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}
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} else {
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# It's not Plesk or debian, we should try a login
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my $loginstatus = `$mysqladmincmd $remotestring ping 2>&1`;
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if ($loginstatus =~ /mysqld is alive/) {
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# Login went just fine
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$mysqllogin = " $remotestring ";
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# Did this go well because of a .my.cnf file or is there no password set?
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my $userpath = `printenv HOME`;
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if (length($userpath) > 0) {
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chomp($userpath);
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}
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unless ( -e "${userpath}/.my.cnf" or -e "${userpath}/.mylogin.cnf" ) {
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badprint "Successfully authenticated with no password - SECURITY RISK!\n";
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}
|
|
return 1;
|
|
} else {
|
|
print STDERR "Please enter your MySQL administrative login: ";
|
|
my $name = <>;
|
|
print STDERR "Please enter your MySQL administrative password: ";
|
|
system("stty -echo >$devnull 2>&1");
|
|
my $password = <>;
|
|
system("stty echo >$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 "\n";
|
|
if (! length($password)) {
|
|
# Did this go well because of a .my.cnf file or is there no password set?
|
|
my $userpath = `ls -d ~`;
|
|
chomp($userpath);
|
|
unless ( -e "$userpath/.my.cnf" ) {
|
|
badprint "Successfully authenticated with no password - SECURITY RISK!\n";
|
|
}
|
|
}
|
|
return 1;
|
|
} else {
|
|
print "\n".$bad." Attempted to use login credentials, but they were invalid.\n";
|
|
exit 0;
|
|
}
|
|
exit 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
# MySQL Request Array
|
|
sub select_array {
|
|
my $req=shift;
|
|
debugprint "PERFORM: $req \n";
|
|
my @result=`$mysqlcmd $mysqllogin -Bse "$req"`;
|
|
chomp (@result);
|
|
return @result;
|
|
}
|
|
|
|
# MySQL Request one
|
|
sub select_one {
|
|
my $req=shift;
|
|
debugprint "PERFORM: $req \n";
|
|
my $result=`$mysqlcmd $mysqllogin -Bse "$req"`;
|
|
chomp ($result);
|
|
return $result;
|
|
}
|
|
|
|
# Populates all of the variable and status hashes
|
|
my (%mystat,%myvar,$dummyselect,%myrepl, %myslaves);
|
|
sub get_all_vars {
|
|
# We need to initiate at least one query so that our data is useable
|
|
$dummyselect = select_one "SELECT VERSION()";
|
|
debugprint "VERSION: ".$dummyselect."\n";
|
|
|
|
my @mysqlvarlist = select_array "SHOW /*!50000 GLOBAL */ VARIABLES";
|
|
foreach my $line (@mysqlvarlist) {
|
|
$line =~ /([a-zA-Z_]*)\s*(.*)/;
|
|
$myvar{$1} = $2;
|
|
debugprint "$1 = $2\n";
|
|
}
|
|
|
|
my @mysqlstatlist = select_array "SHOW /*!50000 GLOBAL */ STATUS";
|
|
foreach my $line (@mysqlstatlist) {
|
|
$line =~ /([a-zA-Z_]*)\s*(.*)/;
|
|
$mystat{$1} = $2;
|
|
}
|
|
# Workaround for MySQL bug #59393 wrt. ignore-builtin-innodb
|
|
if (($myvar{'ignore_builtin_innodb'} || "") eq "ON") {
|
|
$myvar{'have_innodb'} = "NO";
|
|
}
|
|
# 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;
|
|
}
|
|
}
|
|
|
|
my @mysqlslave = select_array "SHOW SLAVE STATUS\\G";
|
|
|
|
foreach my $line (@mysqlslave) {
|
|
if ($line =~ /\s*(.*):\s*(.*)/) {
|
|
debugprint "$1 => $2\n";
|
|
$myrepl{"$1"} = $2;
|
|
}
|
|
}
|
|
#print Dumper(%myrepl);
|
|
#exit 0;
|
|
my @mysqlslaves = select_array "SHOW SLAVE HOSTS";
|
|
my @lineitems=();
|
|
foreach my $line (@mysqlslaves) {
|
|
debugprint "L: $line \n";
|
|
@lineitems=split /\s*/, $line;
|
|
$myslaves{$lineitems[0]}=$line;
|
|
}
|
|
}
|
|
|
|
sub get_basic_passwords {
|
|
my $file=shift;
|
|
open (FH, "< $file") or die "Can't open $file for read: $!";
|
|
my @lines = <FH>;
|
|
close FH or die "Cannot close $file: $!";
|
|
return @lines
|
|
}
|
|
|
|
sub security_recommendations {
|
|
prettyprint "\n-------- Security Recommendations -------------------------------------------\n";
|
|
if ($opt{skippassword} eq 1) {
|
|
infoprint "Skipped due to --skippassword option\n";
|
|
return;
|
|
}
|
|
# Looking for Anonymous users
|
|
my @mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE TRIM(USER) = '' OR USER IS NULL";
|
|
if (@mysqlstatlist) {
|
|
foreach my $line (sort @mysqlstatlist) {
|
|
chomp($line);
|
|
badprint "User '".$line."' is an anonymous account.\n";
|
|
}
|
|
push(@generalrec, "Remove Anonymous User account - there is ".scalar(@mysqlstatlist). " Anonymous account.");
|
|
} else {
|
|
goodprint "There is no anonymous account in all database users\n";
|
|
}
|
|
|
|
# Looking for Empty Password
|
|
@mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE password = '' OR password IS NULL";
|
|
if (@mysqlstatlist) {
|
|
foreach my $line (sort @mysqlstatlist) {
|
|
chomp($line);
|
|
badprint "User '".$line."' has no password set.\n";
|
|
}
|
|
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\n";
|
|
}
|
|
|
|
# Looking for User with user/ uppercase /capitalise user as password
|
|
@mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE CAST(password as Binary) = PASSWORD(user) OR CAST(password as Binary) = PASSWORD(UPPER(user)) OR CAST(password as Binary) = PASSWORD(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.\n";
|
|
}
|
|
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."' hasn't specific host restriction.\n";
|
|
}
|
|
push(@generalrec, "Restrict Host for user\@% to user\@SpecificDNSorIp");
|
|
}
|
|
|
|
unless (-f $basic_password_files) {
|
|
badprint "There is not basic password file list !\n";
|
|
return;
|
|
}
|
|
|
|
my @passwords=get_basic_passwords $basic_password_files;
|
|
infoprint "There is ". scalar(@passwords). " basic passwords in the list.\n";
|
|
my $nbins=0;
|
|
my $passreq;
|
|
if (@passwords) {
|
|
foreach my $pass (@passwords) {
|
|
$pass=~s/\s//g;
|
|
chomp($pass);
|
|
# Looking for User with user/ uppercase /capitalise weak password
|
|
@mysqlstatlist = select_array "SELECT CONCAT(user, '\@', host) FROM mysql.user WHERE password = PASSWORD('".$pass."') OR password = PASSWORD(UPPER('".$pass."')) OR password = PASSWORD(UPPER(LEFT('".$pass."', 1)) + SUBSTRING('".$pass."', 2, LENGTH('".$pass."')))";
|
|
debugprint "There is ".scalar (@mysqlstatlist). " items.\n";
|
|
if (@mysqlstatlist) {
|
|
foreach my $line (@mysqlstatlist) {
|
|
chomp($line);
|
|
badprint "User '".$line."' is using weak pasword: $pass in a lower, upper or capitalize derivated version.\n";
|
|
$nbins++;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
if ($nbins>0) {
|
|
push(@generalrec, $nbins. " user(s) used basic or weaked password.");
|
|
}
|
|
}
|
|
|
|
sub get_replication_status {
|
|
prettyprint "\n-------- Replication Metrics -------------------------------------------------\n";
|
|
|
|
if( scalar(keys %myslaves)==0 ) {
|
|
infoprint "No replication slave(s) for this server.\n";
|
|
} else {
|
|
infoprint "This server is acting as master for ".scalar(keys %myslaves)." server(s).\n";
|
|
}
|
|
|
|
if( scalar(keys %myrepl)==0 and scalar(keys %myslaves)==0 ) {
|
|
infoprint "This is a standalone server..\n";
|
|
return;
|
|
}
|
|
if( scalar(keys %myrepl)==0 ) {
|
|
infoprint "No replication setup for this server.\n";
|
|
}
|
|
my ($io_running) = $myrepl{'Slave_IO_Running'};
|
|
debugprint "IO RUNNING: $io_running \n";
|
|
my ($sql_running) = $myrepl{'Slave_SQL_Running'};
|
|
debugprint "SQL RUNNING: $sql_running \n";
|
|
my ($seconds_behind_master) = $myrepl{'Seconds_Behind_Master'};
|
|
debugprint "SECONDS : $seconds_behind_master \n";
|
|
|
|
if (defined($io_running) and ($io_running !~ '/yes/i' or $sql_running !~ '/yes/i' )) {
|
|
badprint "This replication slave is not running but seems to be configurated.";
|
|
}
|
|
if (defined($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 $seconds_behind_master second(s) behind master host.";
|
|
} else {
|
|
goodprint "This replication slave is uptodate with master.";
|
|
}
|
|
}
|
|
}
|
|
|
|
# Checks for supported or EOL'ed MySQL versions
|
|
my ($mysqlvermajor,$mysqlverminor);
|
|
sub validate_mysql_version {
|
|
($mysqlvermajor,$mysqlverminor) = $myvar{'version'} =~ /(\d+)\.(\d+)/;
|
|
if (!mysql_version_ge(5,1)) {
|
|
badprint "Your MySQL version ".$myvar{'version'}." is EOL software! Upgrade soon!\n";
|
|
} elsif (mysql_version_ge(6)) {
|
|
badprint "Currently running unsupported MySQL version ".$myvar{'version'}."\n";
|
|
} else {
|
|
goodprint "Currently running supported MySQL version ".$myvar{'version'}."\n";
|
|
}
|
|
}
|
|
|
|
# Checks if MySQL version is greater than equal to (major, minor)
|
|
sub mysql_version_ge {
|
|
my ($maj, $min) = @_;
|
|
return $mysqlvermajor > $maj || ($mysqlvermajor == $maj && $mysqlverminor >= ($min || 0));
|
|
}
|
|
|
|
# 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\n";
|
|
} elsif (`uname` !~ /SunOS/ && `uname -m` =~ /64/) {
|
|
$arch = 64;
|
|
goodprint "Operating on 64-bit architecture\n";
|
|
} elsif (`uname` =~ /AIX/ && `bootinfo -K` =~ /64/) {
|
|
$arch = 64;
|
|
goodprint "Operating on 64-bit architecture\n";
|
|
} elsif (`uname` =~ /NetBSD|OpenBSD/ && `sysctl -b hw.machine` =~ /64/) {
|
|
$arch = 64;
|
|
goodprint "Operating on 64-bit architecture\n";
|
|
} elsif (`uname` =~ /FreeBSD/ && `sysctl -b hw.machine_arch` =~ /64/) {
|
|
$arch = 64;
|
|
goodprint "Operating on 64-bit architecture\n";
|
|
} 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\n";
|
|
} 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\n";
|
|
} else {
|
|
$arch = 32;
|
|
if ($physical_memory > 2147483648) {
|
|
badprint "Switch to 64-bit OS - MySQL cannot currently use all of your RAM\n";
|
|
} else {
|
|
goodprint "Operating on 32-bit architecture with less than 2GB RAM\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
# Start up a ton of storage engine counts/statistics
|
|
my (%enginestats,%enginecount,$fragtables);
|
|
sub check_storage_engines {
|
|
if ($opt{skipsize} eq 1) {
|
|
prettyprint "\n-------- Storage Engine Statistics -------------------------------------------\n";
|
|
infoprint "Skipped due to --skipsize option\n";
|
|
return;
|
|
}
|
|
prettyprint "\n-------- Storage Engine Statistics -------------------------------------------\n";
|
|
|
|
my $engines;
|
|
if (mysql_version_ge(5, 1)) {
|
|
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]+)/;
|
|
$engines .= ($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 " ;
|
|
}
|
|
infoprint "Status: $engines\n";
|
|
if (mysql_version_ge(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) 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;";
|
|
|
|
foreach my $line (@templist) {
|
|
my ($engine,$size,$count);
|
|
($engine,$size,$count) = $line =~ /([a-zA-Z_]*)\s+(\d+)\s+(\d+)/;
|
|
if (!defined($size)) { next; }
|
|
$enginestats{$engine} = $size;
|
|
$enginecount{$engine} = $count;
|
|
}
|
|
$fragtables = select_one "SELECT COUNT(TABLE_NAME) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('information_schema','performance_schema', 'mysql') AND Data_free > 0 AND NOT ENGINE='MEMORY'";
|
|
chomp($fragtables);
|
|
} 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
|
|
my @dblist = select_array "SHOW DATABASES";
|
|
foreach my $db (@dblist) {
|
|
chomp($db);
|
|
if ($db eq "information_schema" or $db eq "performance_schema" or $db eq "mysql") { next; }
|
|
my @ixs = (1, 6, 9);
|
|
if (!mysql_version_ge(4, 1)) {
|
|
# MySQL 3.23/4.0 keeps Data_Length in the 5th (0-based) column
|
|
@ixs = (1, 5, 8);
|
|
}
|
|
push(@tblist, map { [ (split)[@ixs] ] } select_array "SHOW TABLE STATUS FROM \\\`$db\\\`");
|
|
}
|
|
# Parse through the table list to generate storage engine counts/statistics
|
|
$fragtables = 0;
|
|
foreach my $tbl (@tblist) {
|
|
my ($engine, $size, $datafree) = @$tbl;
|
|
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 $engine tables: ".hr_bytes_rnd($size)." (Tables: ".$enginecount{$engine}.")"."\n";
|
|
}
|
|
# 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\n";
|
|
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\n";
|
|
push(@generalrec,"Add skip-bdb to MySQL configuration to disable BDB");
|
|
}
|
|
if (!defined $enginestats{'ISAM'} && defined $myvar{'have_isam'} && $myvar{'have_isam'} eq "YES") {
|
|
badprint "MYISAM is enabled but isn't being used\n";
|
|
push(@generalrec,"Add skip-isam to MySQL configuration to disable ISAM (MySQL > 4.1.0)");
|
|
}
|
|
# Fragmented tables
|
|
if ($fragtables > 0) {
|
|
badprint "Total fragmented tables: $fragtables\n";
|
|
push(@generalrec,"Run OPTIMIZE TABLE to defragment tables for better performance");
|
|
} else {
|
|
goodprint "Total fragmented tables: $fragtables\n";
|
|
}
|
|
|
|
|
|
# Auto increments
|
|
my %tblist;
|
|
# Find the maximum integer
|
|
my $maxint = select_one "SELECT ~0";
|
|
|
|
# Now we build a database list, and loop through it to get storage engine stats for tables
|
|
my @dblist = select_array "SHOW DATABASES";
|
|
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 $percent = ($autoincrement / $maxint) * 100;
|
|
if($percent >= 75) {
|
|
badprint "Table '$db.$name' has an autoincrement value near max capacity ($percent%)\n";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
my %mycalc;
|
|
sub calculations {
|
|
if ($mystat{'Questions'} < 1) {
|
|
badprint "Your server has not answered any queries - cannot continue...";
|
|
exit 0;
|
|
}
|
|
# 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 ;
|
|
|
|
# Global memory
|
|
$mycalc{'max_used_memory'} = $mycalc{'server_buffers'} + $mycalc{"max_total_per_thread_buffers"};
|
|
$mycalc{'total_possible_used_memory'} = $mycalc{'server_buffers'} + $mycalc{'total_per_thread_buffers'};
|
|
|
|
$mycalc{'pct_physical_memory'} = int(($mycalc{'total_possible_used_memory'} * 100) / $physical_memory);
|
|
|
|
# Maximum memory limit
|
|
$mycalc{'max_peak_memory'}=0;
|
|
foreach my $key ( 'key_buffer_size', 'query_cache_size', 'tmp_table_size',
|
|
'innodb_buffer_pool_size', 'innodb_additional_mem_pool_size',
|
|
'innodb_log_buffer_size') {
|
|
$mycalc{'max_peak_memory'}+=$myvar{$key} if defined $myvar{$key};
|
|
}
|
|
foreach my $key ( 'sort_buffer_size', 'read_buffer_size', 'read_rnd_buffer_size', 'join_buffer_size',
|
|
'thread_stack', 'binlog_cache_size' ) {
|
|
$mycalc{'max_peak_memory'}+=($myvar{$key}*$myvar{'max_connections'}) if defined $myvar{$key};
|
|
}
|
|
debugprint "Max Peak Memory: ".hr_bytes($mycalc{'max_peak_memory'})."\n";
|
|
$mycalc{'pct_max_physical_memory'} = percentage($mycalc{'max_peak_memory'}, $physical_memory);
|
|
debugprint "Max Percentage RAM: ".$mycalc{'pct_max_physical_memory'}."%\n";
|
|
|
|
# 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'}."\n";
|
|
debugprint "Connections: ".$mystat{'Connections'}."\n";
|
|
debugprint "pct_connections_aborted: ".$mycalc{'pct_connections_aborted'}."\n";
|
|
|
|
# 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 {
|
|
$mycalc{'pct_keys_from_mem'} = 0;
|
|
}
|
|
|
|
if ($mystat{'Key_write_requests'} > 0) {
|
|
$mycalc{'pct_wkeys_from_mem'} = sprintf("%.1f",(100 - (($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;
|
|
} 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';";
|
|
}
|
|
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'});
|
|
}
|
|
|
|
# Query cache
|
|
if (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'} * 100 / $myvar{'innodb_buffer_pool_size'});
|
|
}
|
|
($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'}."\n";
|
|
debugprint "Innodb_buffer_pool_reads: ".$mystat{'Innodb_buffer_pool_reads'}."\n";
|
|
debugprint "Innodb_buffer_pool_read_requests: ".$mystat{'Innodb_buffer_pool_read_requests'}."\n";
|
|
($mystat{'Innodb_buffer_pool_write_requests'}, $mystat{'Innodb_buffer_pool_writes'})=(1,1) unless defined $mystat{'Innodb_buffer_pool_writes'};
|
|
$mycalc{'pct_write_efficiency'}=percentage(($mystat{'Innodb_buffer_pool_write_requests'}-$mystat{'Innodb_buffer_pool_writes'}), $mystat{'Innodb_buffer_pool_write_requests'}) if defined $mystat{'Innodb_buffer_pool_write_requests'};
|
|
debugprint "pct_write_efficiency: ".$mycalc{'pct_read_efficiency'}."\n";
|
|
debugprint "Innodb_buffer_pool_writes: ".$mystat{'Innodb_buffer_pool_writes'}."\n";
|
|
debugprint "Innodb_buffer_pool_write_requests: ".$mystat{'Innodb_buffer_pool_write_requests'}."\n";
|
|
$mycalc{'pct_innodb_buffer_used'}=percentage(($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 {
|
|
prettyprint "\n-------- Performance Metrics -------------------------------------------------\n";
|
|
# Show uptime, queries per second, connections, traffic stats
|
|
my $qps;
|
|
if ($mystat{'Uptime'} > 0) { $qps = sprintf("%.3f",$mystat{'Questions'}/$mystat{'Uptime'}); }
|
|
if ($mystat{'Uptime'} < 86400) { push(@generalrec,"MySQL started within last 24 hours - recommendations may be inaccurate"); }
|
|
infoprint "Up for: ".pretty_uptime($mystat{'Uptime'})." (".hr_num($mystat{'Questions'}).
|
|
" q [".hr_num($qps)." qps], ".hr_num($mystat{'Connections'})." conn,".
|
|
" TX: ".hr_num($mystat{'Bytes_sent'}).", RX: ".hr_num($mystat{'Bytes_received'}).")\n";
|
|
infoprint "Reads / Writes: ".$mycalc{'pct_reads'}."% / ".$mycalc{'pct_writes'}."%\n";
|
|
# Binlog Cache
|
|
if ($myvar{'log_bin'} eq 'OFF') {
|
|
infoprint "Binary logging is disabled\n";
|
|
} else {
|
|
infoprint "Binary logging is enabled (GTID MODE: ".(defined ($myvar{'gtid_mode'})?$myvar{'gtid_mode'}:"OFF").")\n";
|
|
}
|
|
|
|
# Memory usage
|
|
infoprint "Total buffers: ".hr_bytes($mycalc{'server_buffers'})." global + ".hr_bytes($mycalc{'per_thread_buffers'})." per thread ($myvar{'max_connections'} max threads)\n";
|
|
|
|
if ($opt{buffers} ne 0) {
|
|
infoprint "Global Buffers\n";
|
|
infoprint " +-- Key Buffer: " . hr_bytes($myvar{'key_buffer_size'}) . "\n";
|
|
infoprint " +-- Max Tmp Table: ".hr_bytes($mycalc{'max_tmp_table_size'})."\n";
|
|
|
|
if (defined $myvar{'query_cache_type'}) {
|
|
infoprint "Query Cache Buffers\n";
|
|
infoprint " +-- Query Cache: ".$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")) . "\n";
|
|
infoprint " +-- Query Cache Size: " . hr_bytes($myvar{'query_cache_size'}) . "\n";
|
|
}
|
|
|
|
infoprint "Per Thread Buffers\n";
|
|
infoprint " +-- Read Buffer: " . hr_bytes($myvar{'read_buffer_size'}) . "\n";
|
|
infoprint " +-- Read RND Buffer: " . hr_bytes($myvar{'read_rnd_buffer_size'}) . "\n";
|
|
infoprint " +-- Sort Buffer: " . hr_bytes($myvar{'sort_buffer_size'}) . "\n";
|
|
infoprint " +-- Thread stack: " . hr_bytes($myvar{'thread_stack'}) . "\n";
|
|
infoprint " +-- Join Buffer: " . hr_bytes($myvar{'join_buffer_size'}) . "\n";
|
|
if ( $myvar{'log_bin'} ne 'OFF') {
|
|
infoprint "Binlog Cache Buffers\n";
|
|
infoprint " +-- Binlog Cache: ". hr_bytes($myvar{'binlog_cache_size'})."\n";
|
|
}
|
|
}
|
|
|
|
if ($arch && $arch == 32 && $mycalc{'total_possible_used_memory'} > 2*1024*1024*1024) {
|
|
badprint "Allocating > 2GB RAM on 32-bit systems can cause system instability\n";
|
|
badprint "Maximum reached memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
|
|
} elsif ($mycalc{'pct_physical_memory'} > 85) {
|
|
badprint "Maximum reached memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
|
|
} else {
|
|
goodprint "Maximum reached memory usage: ".hr_bytes($mycalc{'total_possible_used_memory'})." ($mycalc{'pct_physical_memory'}% of installed RAM)\n";
|
|
}
|
|
|
|
if ($mycalc{'pct_max_physical_memory'} > 85) {
|
|
badprint "Maximum possible memory usage: ".hr_bytes($mycalc{'max_peak_memory'})." ($mycalc{'pct_max_physical_memory'}% of installed RAM)\n";
|
|
push(@generalrec,"Reduce your overall MySQL memory footprint for system stability");
|
|
} else {
|
|
goodprint "Maximum possible memory usage: ".hr_bytes($mycalc{'max_peak_memory'})." ($mycalc{'pct_max_physical_memory'}% of installed RAM)\n";
|
|
}
|
|
|
|
# Slow queries
|
|
if ($mycalc{'pct_slow_queries'} > 5) {
|
|
badprint "Slow queries: $mycalc{'pct_slow_queries'}% (".hr_num($mystat{'Slow_queries'})."/".hr_num($mystat{'Questions'}).")\n";
|
|
} else {
|
|
goodprint "Slow queries: $mycalc{'pct_slow_queries'}% (".hr_num($mystat{'Slow_queries'})."/".hr_num($mystat{'Questions'}).")\n";
|
|
}
|
|
if ($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'}/$myvar{'max_connections'})\n";
|
|
push(@adjvars,"max_connections (> ".$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'}/$myvar{'max_connections'})\n";
|
|
}
|
|
|
|
# Aborted Connections
|
|
if ($mycalc{'pct_connections_aborted'} > 3) {
|
|
badprint "Aborted connections: $mycalc{'pct_connections_aborted'}% ($mystat{'Aborted_connects'}/$mystat{'Connections'})\n";
|
|
push(@generalrec,"Reduce or eliminate unclosed connections and network issues")
|
|
} else {
|
|
goodprint "Aborted connections: $mycalc{'pct_connections_aborted'}% ($mystat{'Aborted_connects'}/$mystat{'Connections'})\n";
|
|
}
|
|
|
|
# Key buffer usage
|
|
if (defined($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)\n";
|
|
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)\n";
|
|
}
|
|
} 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)\n";
|
|
}
|
|
# 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$/) {
|
|
badprint "Cannot calculate MyISAM index size - re-run script as root user\n";
|
|
} elsif ($mycalc{'total_myisam_indexes'} == "0") {
|
|
badprint "None of your MyISAM tables are indexed - add indexes immediately\n";
|
|
} 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($mycalc{'total_myisam_indexes'})."\n";
|
|
push(@adjvars,"key_buffer_size (> ".hr_bytes($mycalc{'total_myisam_indexes'}).")");
|
|
} else {
|
|
goodprint "Key buffer size / total MyISAM indexes: ".hr_bytes($myvar{'key_buffer_size'})."/".hr_bytes($mycalc{'total_myisam_indexes'})."\n";
|
|
}
|
|
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)\n";
|
|
} else {
|
|
goodprint "Read Key buffer hit rate: $mycalc{'pct_keys_from_mem'}% (".hr_num($mystat{'Key_read_requests'})." cached / ".hr_num($mystat{'Key_reads'})." reads)\n";
|
|
}
|
|
} else {
|
|
# No queries have run that would use keys
|
|
debugprint "Key buffer size / total MyISAM indexes: ".hr_bytes($myvar{'key_buffer_size'})."/".hr_bytes($mycalc{'total_myisam_indexes'})."\n";
|
|
}
|
|
if ($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)\n";
|
|
} 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)\n";
|
|
}
|
|
} 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($mystat{'Key_writes'})." writes)\n";
|
|
}
|
|
}
|
|
|
|
# Query cache
|
|
if (!mysql_version_ge(4)) {
|
|
# MySQL versions < 4.01 don't support query caching
|
|
push(@generalrec,"Upgrade MySQL to version 4+ to utilize query caching");
|
|
} elsif ($myvar{'query_cache_size'} < 1) {
|
|
badprint "Query cache is disabled\n";
|
|
push(@adjvars,"query_cache_size (>= 8M)");
|
|
} elsif ($myvar{'query_cache_type'} eq "OFF") {
|
|
badprint "Query cache is disabled\n";
|
|
push(@adjvars,"query_cache_type (=1)");
|
|
} elsif ($mystat{'Com_select'} == 0) {
|
|
badprint "Query cache cannot be analyzed - no SELECT statements executed\n";
|
|
} else {
|
|
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)\n";
|
|
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)\n";
|
|
}
|
|
if ($mycalc{'query_cache_prunes_per_day'} > 98) {
|
|
badprint "Query cache prunes per day: $mycalc{'query_cache_prunes_per_day'}\n";
|
|
if ($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: $mycalc{'query_cache_prunes_per_day'}\n";
|
|
}
|
|
}
|
|
|
|
# Sorting
|
|
if ($mycalc{'total_sorts'} == 0) {
|
|
# For the sake of space, we will be quiet here
|
|
# No sorts have run yet
|
|
} 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($mycalc{'total_sorts'})." sorts)\n";
|
|
push(@adjvars,"sort_buffer_size (> ".hr_bytes_rnd($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($mycalc{'total_sorts'})." sorts)\n";
|
|
}
|
|
|
|
# Joins
|
|
if ($mycalc{'joins_without_indexes_per_day'} > 250) {
|
|
badprint "Joins performed without indexes: $mycalc{'joins_without_indexes'}\n";
|
|
push(@adjvars,"join_buffer_size (> ".hr_bytes($myvar{'join_buffer_size'}).", or always use indexes with joins)");
|
|
push(@generalrec,"Adjust your join queries to always utilize indexes");
|
|
} else {
|
|
# For the sake of space, we will be quiet here
|
|
# 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($mystat{'Created_tmp_tables'})." total)\n";
|
|
push(@adjvars,"tmp_table_size (> ".hr_bytes_rnd($myvar{'tmp_table_size'}).")");
|
|
push(@adjvars,"max_heap_table_size (> ".hr_bytes_rnd($myvar{'max_heap_table_size'}).")");
|
|
push(@generalrec,"When making adjustments, make tmp_table_size/max_heap_table_size equal");
|
|
push(@generalrec,"Reduce your SELECT DISTINCT queries without LIMIT clauses");
|
|
} elsif ($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)\n";
|
|
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($mystat{'Created_tmp_tables'})." total)\n";
|
|
}
|
|
} else {
|
|
# For the sake of space, we will be quiet here
|
|
# No temporary tables have been created
|
|
}
|
|
|
|
# Thread cache
|
|
if ($myvar{'thread_cache_size'} eq 0) {
|
|
badprint "Thread cache is disabled\n";
|
|
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)\n";
|
|
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)\n";
|
|
}
|
|
}
|
|
|
|
# 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)\n";
|
|
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: http://bit.ly/1mi7c4C");
|
|
} else {
|
|
goodprint "Table cache hit rate: $mycalc{'table_cache_hit_rate'}% (".hr_num($mystat{'Open_tables'})." open / ".hr_num($mystat{'Opened_tables'})." opened)\n";
|
|
}
|
|
}
|
|
|
|
# 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($myvar{'open_files_limit'}).")\n";
|
|
push(@adjvars,"open_files_limit (> ".$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'}).")\n";
|
|
}
|
|
}
|
|
|
|
# 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'}%\n";
|
|
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)\n";
|
|
}
|
|
}
|
|
|
|
# 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 / ".$mystat{'Binlog_cache_use'}." Total)\n";
|
|
push(@generalrec,"Increase binlog_cache_size (Actual value: ".$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)\n";
|
|
debugprint "Not enought data to validate binlog cache size\n" if $mystat{'Binlog_cache_use'}<10;
|
|
}
|
|
}
|
|
|
|
# Performance options
|
|
if (!mysql_version_ge(5, 1)) {
|
|
push(@generalrec,"Upgrade to MySQL 5.5+ to use asynchrone write");
|
|
} elsif ($myvar{'concurrent_insert'} eq "OFF") {
|
|
push(@generalrec,"Enable concurrent_insert by setting it to 'ON'");
|
|
} elsif ($myvar{'concurrent_insert'} eq 0) {
|
|
push(@generalrec,"Enable concurrent_insert by setting it to 1");
|
|
}
|
|
if ($mycalc{'pct_aborted_connections'} > 5) {
|
|
badprint "Connections aborted: ".$mycalc{'pct_aborted_connections'}."%\n";
|
|
push(@generalrec,"Your applications are not closing MySQL connections properly");
|
|
}
|
|
|
|
}
|
|
# Recommandations for Innodb
|
|
sub mysql_innodb {
|
|
prettyprint "\n-------- InnoDB Metrics -----------------------------------------------------\n";
|
|
# InnoDB
|
|
unless (defined $myvar{'have_innodb'} && $myvar{'have_innodb'} eq "YES" && defined $enginestats{'InnoDB'}) {
|
|
infoprint "InnoDB is disabled.";
|
|
if (mysql_version_ge(5,5)) {
|
|
badprint "InnoDB Storage engine is disabled. InnoDB is the default storage engine\n";
|
|
}
|
|
return;
|
|
}
|
|
infoprint "InnoDB is enabled.\n";
|
|
|
|
if ($opt{buffers} ne 0) {
|
|
infoprint "InnoDB Buffers\n";
|
|
if (defined $myvar{'innodb_buffer_pool_size'}) {
|
|
infoprint " +-- InnoDB Buffer Pool: " . hr_bytes($myvar{'innodb_buffer_pool_size'}) . "\n";
|
|
}
|
|
if (defined $myvar{'innodb_buffer_pool_instances'}) {
|
|
infoprint " +-- InnoDB Buffer Pool Instances: " . $myvar{'innodb_buffer_pool_instances'} . "\n";
|
|
}
|
|
if (defined $myvar{'innodb_additional_mem_pool_size'}) {
|
|
infoprint " +-- InnoDB Additional Mem Pool: " . hr_bytes($myvar{'innodb_additional_mem_pool_size'}) . "\n";
|
|
}
|
|
if (defined $myvar{'innodb_log_buffer_size'}) {
|
|
infoprint " +-- InnoDB Log Buffer: " . hr_bytes($myvar{'innodb_log_buffer_size'}) . "\n";
|
|
}
|
|
if (defined $mystat{'Innodb_buffer_pool_pages_free'}) {
|
|
infoprint " +-- InnoDB Log Buffer Free: " . hr_bytes($mystat{'Innodb_buffer_pool_pages_free'}) . "\n";
|
|
}
|
|
if (defined $mystat{'Innodb_buffer_pool_pages_total'}) {
|
|
infoprint " +-- InnoDB Log Buffer Used: " . hr_bytes($mystat{'Innodb_buffer_pool_pages_total'}) . "\n";
|
|
}
|
|
}
|
|
# InnoDB Buffer Pull Size
|
|
if ($myvar{'innodb_buffer_pool_size'} > $enginestats{'InnoDB'}) {
|
|
goodprint "InnoDB buffer pool / data size: ".hr_bytes($myvar{'innodb_buffer_pool_size'})."/".hr_bytes($enginestats{'InnoDB'})."\n";
|
|
} else {
|
|
badprint "InnoDB buffer pool / data size: ".hr_bytes($myvar{'innodb_buffer_pool_size'})."/".hr_bytes($enginestats{'InnoDB'})."\n";
|
|
push(@adjvars,"innodb_buffer_pool_size (>= ".hr_bytes_rnd($enginestats{'InnoDB'}).") if possible.");
|
|
}
|
|
|
|
# InnoDB Buffer Pull 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: ".$myvar{'innodb_buffer_pool_instances'}."\n";
|
|
push(@adjvars,"innodb_buffer_pool_instances (<= 64)");
|
|
}
|
|
|
|
# InnoDB Buffer Pull Size > 1Go
|
|
if ($myvar{'innodb_buffer_pool_size'} > 1024*1024*1024) {
|
|
# InnoDB Buffer Pull Size / 1Go = InnoDB Buffer Pull Instances
|
|
if ($myvar{'innodb_buffer_pool_instances'} != int($myvar{'innodb_buffer_pool_size'}/(1024*1024*1024))) {
|
|
badprint "InnoDB buffer pool instances: ".$myvar{'innodb_buffer_pool_instances'}."\n";
|
|
push(@adjvars,"innodb_buffer_pool_instances(=".int($myvar{'innodb_buffer_pool_size'}/(1024*1024*1024)).")");
|
|
} else {
|
|
goodprint "InnoDB buffer pool instances: ".$myvar{'innodb_buffer_pool_instances'}."\n";
|
|
}
|
|
# InnoDB Buffer Pull Size < 1Go
|
|
} else {
|
|
if ($myvar{'innodb_buffer_pool_instances'} != 1) {
|
|
badprint "InnoDB buffer pool <= 1G and innodb_buffer_pool_instances(!=1).\n";
|
|
push(@adjvars,"innodb_buffer_pool_instances (=1)");
|
|
} else {
|
|
goodprint "InnoDB buffer pool instances: ".$myvar{'innodb_buffer_pool_instances'}."\n";
|
|
}
|
|
}
|
|
}
|
|
|
|
# InnoDB Used Buffer Pool
|
|
if (defined $mycalc{'pct_innodb_buffer_used'} && $mycalc{'pct_innodb_buffer_used'} < 80 ) {
|
|
badprint "InnoDB Used buffer: ".$mycalc{'pct_innodb_buffer_used'}. "% (".($mystat{'Innodb_buffer_pool_pages_total'} - $mystat{'Innodb_buffer_pool_pages_free'})." used/ ".$mystat{'Innodb_buffer_pool_pages_total'}." total)\n";
|
|
} else {
|
|
goodprint "InnoDB Used buffer: ".$mycalc{'pct_innodb_buffer_used'}. "% (".($mystat{'Innodb_buffer_pool_pages_total'} - $mystat{'Innodb_buffer_pool_pages_free'})." used/ ".$mystat{'Innodb_buffer_pool_pages_total'}." total)\n";
|
|
}
|
|
|
|
# InnoDB Read efficency
|
|
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)\n";
|
|
} 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)\n";
|
|
}
|
|
|
|
# InnoDB Write efficency
|
|
if (defined $mycalc{'pct_write_efficiency'} && $mycalc{'pct_write_efficiency'} < 90 ) {
|
|
badprint "InnoDB Write buffer efficiency: ".$mycalc{'pct_write_efficiency'}. "% (".($mystat{'Innodb_buffer_pool_write_requests'} - $mystat{'Innodb_buffer_pool_writes'})." hits/ ".$mystat{'Innodb_buffer_pool_write_requests'}." total)\n";
|
|
} else {
|
|
goodprint "InnoDB Write buffer efficiency: ".$mycalc{'pct_write_efficiency'}. "% (".($mystat{'Innodb_buffer_pool_write_requests'} - $mystat{'Innodb_buffer_pool_writes'})." hits/ ".$mystat{'Innodb_buffer_pool_write_requests'}." total)\n";
|
|
}
|
|
|
|
# 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 / ".$mystat{'Innodb_log_writes'}." writes)\n";
|
|
push(@adjvars,"innodb_log_buffer_size (>= ".hr_bytes_rnd($myvar{'innodb_log_buffer_size'}).")");
|
|
} else {
|
|
goodprint "InnoDB log waits: ".percentage($mystat{'Innodb_log_waits'}, $mystat{'Innodb_log_writes'})."% (".$mystat{'Innodb_log_waits'}. " waits / ".$mystat{'Innodb_log_writes'}." writes)\n";
|
|
}
|
|
}
|
|
|
|
# Recommandations for MySQL Databases
|
|
sub mysql_databases {
|
|
if ($opt{dbstat} == 0) {
|
|
return;
|
|
}
|
|
prettyprint "\n-------- Database Metrics ------------------------------------------------\n";
|
|
unless (mysql_version_ge(5,5)) {
|
|
infoprint "Skip Database metrics from information schema missing in this version\n";
|
|
return;
|
|
}
|
|
|
|
my @dblist=select_array("SHOW DATABASES;");
|
|
infoprint "There is ".scalar(@dblist). " Database(s).\n";
|
|
my @totaldbinfo=split /\s/, select_one("SELECT SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH) FROM information_schema.TABLES WHERE TABLE_SCHEMA NOT IN ('mysql', 'performance_schema', 'information_schema');");
|
|
infoprint "All Databases:\n";
|
|
infoprint " +-- ROWS : ".($totaldbinfo[0] eq 'NULL'?0:$totaldbinfo[0])."\n";
|
|
infoprint " +-- DATA : ".hr_bytes($totaldbinfo[1])."(".percentage($totaldbinfo[1], $totaldbinfo[3])."%)\n";
|
|
infoprint " +-- INDEX: ".hr_bytes($totaldbinfo[2])."(".percentage($totaldbinfo[2], $totaldbinfo[3])."%)\n";
|
|
infoprint " +-- SIZE : ".hr_bytes($totaldbinfo[3])."\n";
|
|
badprint "Index size is larger than data size \n" if $totaldbinfo[1]<$totaldbinfo[2];
|
|
foreach (@dblist) {
|
|
chomp($_);
|
|
if ( $_ eq "information_schema" or $_ eq "performance_schema" or $_ eq "mysql" ) { next; }
|
|
|
|
my @dbinfo=split /\s/, select_one("SELECT TABLE_SCHEMA, SUM(TABLE_ROWS), SUM(DATA_LENGTH), SUM(INDEX_LENGTH) , SUM(DATA_LENGTH+INDEX_LENGTH), COUNT(DISTINCT ENGINE) FROM information_schema.TABLES WHERE TABLE_SCHEMA='$_' GROUP BY TABLE_SCHEMA ORDER BY TABLE_SCHEMA");
|
|
infoprint "Database: ".$dbinfo[0]."\n";
|
|
infoprint " +-- ROWS : ".(!defined($dbinfo[1]) or $dbinfo[1] eq 'NULL'?0:$dbinfo[1])."\n";
|
|
infoprint " +-- DATA : ".hr_bytes($dbinfo[2])."(".percentage($dbinfo[2], $dbinfo[4])."%)\n";
|
|
infoprint " +-- INDEX: ".hr_bytes($dbinfo[3])."(".percentage($dbinfo[3], $dbinfo[4])."%)\n";
|
|
infoprint " +-- TOTAL: ".hr_bytes($dbinfo[4])."\n";
|
|
badprint "Index size is larger than data size for $dbinfo[0] \n" if $dbinfo[2]<$dbinfo[3];
|
|
badprint "There ".$dbinfo[5]. " storage engines. Be careful \n" if $dbinfo[5]>1;
|
|
}
|
|
}
|
|
|
|
# Recommandations for MySQL Databases
|
|
sub mysql_indexes {
|
|
return if ($opt{idxstat} == 0);
|
|
|
|
prettyprint "\n-------- Indexes Metrics -------------------------------------------------\n";
|
|
unless (mysql_version_ge(5,5)) {
|
|
infoprint "Skip Index metrics from information schema missing in this version\n";
|
|
return;
|
|
}
|
|
my $selIdxReq= <<'ENDSQL';
|
|
SELECT
|
|
CONCAT(CONCAT(t.TABLE_SCHEMA, '.'),t.TABLE_NAME) AS 'table'
|
|
, CONCAT(CONCAT(CONCAT(s.INDEX_NAME, '('),s.COLUMN_NAME), ')') AS 'index'
|
|
, s.SEQ_IN_INDEX AS 'seq'
|
|
, s2.max_columns AS 'maxcol'
|
|
, s.CARDINALITY AS 'card'
|
|
, t.TABLE_ROWS AS 'est_rows'
|
|
, ROUND(((s.CARDINALITY / IFNULL(t.TABLE_ROWS, 0.01)) * 100), 2) AS 'sel'
|
|
FROM INFORMATION_SCHEMA.STATISTICS s
|
|
INNER JOIN INFORMATION_SCHEMA.TABLES t
|
|
ON s.TABLE_SCHEMA = t.TABLE_SCHEMA
|
|
AND s.TABLE_NAME = t.TABLE_NAME
|
|
INNER JOIN (
|
|
SELECT
|
|
TABLE_SCHEMA
|
|
, TABLE_NAME
|
|
, INDEX_NAME
|
|
, MAX(SEQ_IN_INDEX) AS max_columns
|
|
FROM INFORMATION_SCHEMA.STATISTICS
|
|
WHERE TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema')
|
|
GROUP BY TABLE_SCHEMA, TABLE_NAME, INDEX_NAME
|
|
) AS s2
|
|
ON s.TABLE_SCHEMA = s2.TABLE_SCHEMA
|
|
AND s.TABLE_NAME = s2.TABLE_NAME
|
|
AND s.INDEX_NAME = s2.INDEX_NAME
|
|
WHERE t.TABLE_SCHEMA NOT IN ('mysql', 'information_schema', 'performance_schema')
|
|
AND t.TABLE_ROWS > 10
|
|
AND s.CARDINALITY IS NOT NULL
|
|
AND (s.CARDINALITY / IFNULL(t.TABLE_ROWS, 0.01)) < 8.00
|
|
ORDER BY sel
|
|
LIMIT 10;
|
|
ENDSQL
|
|
my @idxinfo=select_array($selIdxReq);
|
|
infoprint "Worst selectivity indexes:\n";
|
|
foreach (@idxinfo) {
|
|
debugprint "$_\n";
|
|
my @info= split /\s/;
|
|
infoprint "Index: ".$info[1]."\n";
|
|
|
|
infoprint " +-- COLONNE : ".$info[0]."\n";
|
|
infoprint " +-- NB SEQS : ".$info[2]." sequence(s)\n";
|
|
infoprint " +-- NB COLS : ".$info[3]." column(s)\n";
|
|
infoprint " +-- CARDINALITY : ".$info[4]." distinct values\n";
|
|
infoprint " +-- NB ROWS : ".$info[5]." rows\n";
|
|
infoprint " +-- SELECTIVITY : ".$info[6]."%\n";
|
|
if ($info[6] < 25) {
|
|
badprint "$info[1] has a low selectivity\n";
|
|
}
|
|
}
|
|
|
|
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 "Unsused indexes:\n";
|
|
push(@generalrec, "Remove unused indexes.") if (scalar(@idxinfo)>0);
|
|
foreach (@idxinfo) {
|
|
debugprint "$_\n";
|
|
my @info= split /\s/;
|
|
badprint "Index: $info[1] on $info[0] is not used.\n";
|
|
}
|
|
}
|
|
# Take the two recommendation arrays and display them at the end of the output
|
|
sub make_recommendations {
|
|
prettyprint "\n-------- Recommendations -----------------------------------------------------\n";
|
|
if (@generalrec > 0) {
|
|
prettyprint "General recommendations:\n";
|
|
foreach (@generalrec) { prettyprint " ".$_."\n"; }
|
|
}
|
|
if (@adjvars > 0) {
|
|
prettyprint "Variables to adjust:\n";
|
|
if ($mycalc{'pct_physical_memory'} > 90) {
|
|
prettyprint " *** MySQL's maximum memory usage is dangerously high ***\n".
|
|
" *** Add RAM before increasing MySQL buffer variables ***\n";
|
|
}
|
|
foreach (@adjvars) { prettyprint " ".$_."\n"; }
|
|
}
|
|
if (@generalrec == 0 && @adjvars ==0) {
|
|
prettyprint "No additional performance recommendations are available.\n"
|
|
}
|
|
}
|
|
sub close_reportfile {
|
|
close($fh) if defined($fh);
|
|
}
|
|
# ---------------------------------------------------------------------------
|
|
# BEGIN 'MAIN'
|
|
# ---------------------------------------------------------------------------
|
|
prettyprint " >> MySQLTuner $tunerversion - Major Hayden <major\@mhtx.net>\n".
|
|
" >> Bug reports, feature requests, and downloads at http://mysqltuner.com/\n".
|
|
" >> Run with '--help' for additional options and output filtering\n";
|
|
mysql_setup; # Gotta login first
|
|
os_setup; # Set up some OS variables
|
|
get_all_vars; # Toss variables/status into hashes
|
|
validate_mysql_version; # Check current MySQL version
|
|
check_architecture; # Suggest 64-bit upgrade
|
|
check_storage_engines; # Show enabled storage engines
|
|
mysql_databases; # Show informations about databases
|
|
mysql_indexes; # Show informations about indexes
|
|
security_recommendations; # Display some security recommendations
|
|
calculations; # Calculate everything we need
|
|
mysql_stats; # Print the server stats
|
|
mysql_innodb; # Print InnoDB stats
|
|
get_replication_status; # Print replication info
|
|
make_recommendations; # Make recommendations based on stats
|
|
close_reportfile; # Close reportfile if needed
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# END 'MAIN'
|
|
# ---------------------------------------------------------------------------
|
|
__END__
|
|
|
|
=pod
|
|
|
|
=encoding UTF-8
|
|
|
|
=head1 NAME
|
|
|
|
MySQLTuner 1.4.6 - 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 AUTHENTIFICATION
|
|
|
|
--host <hostname> Connect to a remote host to perform tests (default: localhost)
|
|
--socket <socket> Use a different socket for a local connection
|
|
--port <port> Port to use for connection (default: 3306)
|
|
--user <username> Username to use for authentication
|
|
--pass <password> Password to use for authentication
|
|
--mysqladmin <path> Path to a custom mysqladmin executable
|
|
--mysqlcmd <path> Path to a custom mysql executable
|
|
|
|
=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)
|
|
--forcemem <size> Amount of RAM installed in megabytes
|
|
--forceswap <size> Amount of swap memory configured in megabytes
|
|
--passwordfile <path>Path to a password file list(one password by line)
|
|
--reportfile <path> Path to a report txt file
|
|
|
|
=head1 OUTPUT OPTIONS
|
|
|
|
--nogood Remove OK responses
|
|
--nobad Remove negative/suggestion responses
|
|
--noinfo Remove informational responses
|
|
--debug Print debug information
|
|
--dbstat Print database information
|
|
--idxstat Print index information
|
|
--nocolor Don't print output in color
|
|
--buffers Print global and per-thread buffer values
|
|
|
|
=head1 PERLDOC
|
|
|
|
You can find documentation for this module with the perldoc command.
|
|
|
|
perldoc mysqltuner
|
|
|
|
=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
|
|
|
|
=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<https://github.com/major/MySQLTuner-perl>
|
|
|
|
git clone https://github.com/major/MySQLTuner-perl.git
|
|
|
|
=head1 COPYRIGHT AND LICENSE
|
|
|
|
Copyright (C) 2006-2015 Major Hayden - major@mhtx.net
|
|
|
|
For the latest updates, please visit http://mysqltuner.com/
|
|
|
|
Git repository available at http://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 <http://www.gnu.org/licenses/>.
|
|
|
|
=cut
|
|
|
|
# Local variables:
|
|
# indent-tabs-mode: t
|
|
# cperl-indent-level: 8
|
|
# perl-indent-level: 8
|
|
# End:
|