From fd729ba0c89233f36efcbd1d4cf9c50e4e122e92 Mon Sep 17 00:00:00 2001 From: hhf Date: Sat, 28 Sep 2024 11:03:14 +0530 Subject: [PATCH] Add tuning.sh --- tuning.sh | 1621 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1621 insertions(+) create mode 100644 tuning.sh diff --git a/tuning.sh b/tuning.sh new file mode 100644 index 0000000..06da629 --- /dev/null +++ b/tuning.sh @@ -0,0 +1,1621 @@ +#!/bin/bash + +# vim: sw=2:et +######################################################################### +# # +# MySQL performance tuning script # +# # +# # +# # +# Version: 0.10 Released: 2024-06-10 # +# Licenced under GPLv2 # +# # +######################################################################### + +######################################################################### +# # +# Usage: ./tuning.sh [ mode ] # +# # +# Available Modes: # +# all : perform all checks (default) # +# prompt : prompt for login credentials and socket # +# and execution mode # +# mem, memory : run checks for tunable options which # +# affect memory usage # +# disk, file : run checks for options which affect # +# i/o performance or file handle limits # +# innodb : run InnoDB checks /* to be improved */ # +# misc : run checks that don't fit categories # +# well Slow Queries, Binary logs, # +# Used Connections and Worker Threads # +######################################################################### +# # +# Set this socket variable ONLY if you have multiple instances running # +# or we are unable to find your socket, and you don't want to to be # +# prompted for input each time you run this script. # +# # +######################################################################### +socket= + +function colorize() { + # As an explicit special case, "" yields sgr0 (i.e., black). + local originalcolor="${1}" + local basecolor="${originalcolor}" + + basecolor="${basecolor#bold}" + basecolor="${basecolor#so}" + + case "$basecolor" in + 'red') + tput setaf 1 ;; + 'green') + tput setaf 2 ;; + 'yellow') + tput setaf 3 ;; + 'blue') + tput setaf 4 ;; + 'magenta') + tput setaf 5 ;; + 'cyan') + tput setaf 6 ;; + 'white') + tput setaf 7 ;; + *) # Also "black": + [ "$basecolor" != "black" ] && [ -n "$basecolor" ] && echo "No such color '$basecolor'." >&2 + tput sgr0 ;; + esac + + # bold, etc. + if [ "$basecolor" != "$originalcolor" ]; then + case $originalcolor in + bold*) + tput bold ;; + so*) + tput smso ;; + *) + echo "No such color modifier '${originalcolor%$basecolor}'." >&2 ;; + esac + fi +} + +function cecho() +{ + if [ -z "${1-}" ]; then + cecho "No message passed." "${2-}" + return $? + fi + cechon "$1"$'\n' "${2-}" + return $? +} + +function cechon() +{ +## -- Function to easily print colored text -- ## + + # Color-echo. + # Argument $1 = message + # Argument $2 = color + local default_msg="No message passed." + + message=${1:-$default_msg} # Defaults to default message. + + #change it for fun + #We use pure names + color=${2:-black} # Defaults to black, if not specified. + + colorize "$color" + printf "%s" "$message" + colorize "" # Reset to normal. + +return +} + +function write_mycnf() { + # $1: Path to .my.cnf + # $2: Path to socket (optional) + # $3: username + # $4: password + local socketcomment="" + [ -z "$2" ] && socketcomment="#" + local cleanpassword="${4//\\/\\\\}" + cleanpassword="${cleanpassword//\"/\\\"}" + cat > "${1}" <&1) + local print_defaults=$($MYSQLADMIN_COMMAND --print-defaults 2>/dev/null) + + if [ "$is_up" = "mysqld is alive" ]; then + if [ "${print_defaults//*--host=*}" = "" ] && + ! [ "${print_defaults//*--host=127\.0\.0\.1*}" = "" ] && + ! [ "${print_defaults//*--host=::1*}" = "" ] && + ! [ "${print_defaults//*--host=localhost*}" = "" ]; then + cecho "WARNING: you might be connecting to a remote server. If so, some" boldred + cecho "results may be based on incorrect assumptions. See #13 on Github." boldred + fi + return 0 + fi + printf "\n" + cecho "Using login values from ~/.my.cnf" + cecho "- INITIAL LOGIN ATTEMPT FAILED -" boldred + if [ -z $prompted ] ; then + find_webmin_passwords + fi + return 1 +} + +final_login_attempt () { + is_up=$($MYSQLADMIN_COMMAND ping 2>&1) + if [ "$is_up" = "mysqld is alive" ] ; then + return 0 + else + cecho "- FINAL LOGIN ATTEMPT FAILED -" boldred + cecho "Unable to log into socket: $socket" boldred + exit 1 + fi +} + +## -- create a ~/.my.cnf and exit when all else fails -- ## +function second_login_failed() +{ + cecho "Could not auto detect login info!" + cecho "Found potential sockets: $(xargs <<< "$found_socks")" + if [ -z "$socket" ]; then + cecho " Will use client's default socket (this is normally correct)." bold + else + cecho " Choosing: $socket" red + fi + read -rp "Would you like to override my socket choice?: [y/N] " REPLY + case $REPLY in + yes | y | Y | YES) + read -rp "Socket: " socket + ;; + esac + read -rp "Do you have your login handy ? [y/N] : " REPLY + case $REPLY in + yes | y | Y | YES) + answer1='yes' + read -rp "User: " user + read -rsp "Password: " pass + + export MYSQL_COMMAND="mysql" + export MYSQLADMIN_COMMAND="mysqladmin" + + ;; + *) + cecho "Please create a valid login to MySQL" + cecho "Or, set correct values for 'user=' and 'password=' in ~/.my.cnf" + ;; + esac + cecho " " + echo "Would you like me to create a ~/.my.cnf file for you? If you answer 'N'," + read -p "then I'll create a secure, temporary one instead. [y/N] : " REPLY + case $REPLY in + yes | y | Y | YES) + answer2='yes' + if [ ! -f ~/.my.cnf ] ; then + umask 077 + write_mycnf "${HOME}/.my.cnf" "$socket" "$user" "$pass" + if [ "$answer1" != 'yes' ] ; then + exit 1 + else + final_login_attempt + return 0 + fi + else + printf "\n" + cecho "~/.my.cnf already exists!" boldred + printf "\n" + read -p "Replace ? [y/N] : " REPLY + if [ "$REPLY" = 'y' ] || [ "$REPLY" = 'Y' ] ; then + write_mycnf "${HOME}/.my.cnf" "$socket" "$user" "$pass" + if [ "$answer1" != 'yes' ] ; then + exit 1 + else + final_login_attempt + return 0 + fi + else + cecho "Please set the 'user=' and 'password=' and 'socket=' values in ~/.my.cnf" + exit 1 + fi + fi + ;; + *) + if [ "$answer1" != 'yes' ] ; then + exit 1 + else + local tempmycnf + tempmycnf="$(mktemp)" + write_mycnf "$tempmycnf" "$socket" "$user" "$pass" + export MYSQL_COMMAND="mysql --defaults-extra-file=$tempmycnf $MYSQL_COMMAND_PARAMS" + export MYSQLADMIN_COMMAND="mysqladmin --defaults-extra-file=$tempmycnf $MYSQL_COMMAND_PARAMS" + final_login_attempt + return 0 + fi + ;; + esac +} + +find_webmin_passwords () { + +## -- populate the .my.cnf file using values harvested from Webmin -- ## + + cecho "Testing for stored webmin passwords:" + if [ -f /etc/webmin/mysql/config ] ; then + user=$(grep ^login= /etc/webmin/mysql/config | cut -d "=" -f 2) + pass=$(grep ^pass= /etc/webmin/mysql/config | cut -d "=" -f 2) + if [ $user ] && [ $pass ] && [ ! -f ~/.my.cnf ] ; then + cecho "Setting login info as User: $user Password: $pass" + touch ~/.my.cnf + chmod 600 ~/.my.cnf + write_mycnf "${HOME}/.my.cnf" "" "$user" "$pass" + cecho "Retrying login" + is_up=$($MYSQLADMIN_COMMAND ping 2>&1) + if [ "$is_up" = "mysqld is alive" ] ; then + echo UP > /dev/null + else + second_login_failed + fi + echo + else + second_login_failed + echo + fi + else + cecho " None Found" boldred + second_login_failed + fi +} + +######################################################################### +# # +# Function to pull MySQL status variable # +# # +# Call using : # +# mysql_status \'Mysql_status_variable\' bash_dest_variable # +# # +######################################################################### + +mysql_status () { + local status=$($MYSQL_COMMAND -Bse "show /*!50000 global */ status like $1" | awk '{ print $2 }') + export "$2"=$status +} + +######################################################################### +# # +# Function to pull MySQL server runtime variable # +# # +# Call using : # +# mysql_variable \'Mysql_server_variable\' bash_dest_variable # +# - OR - # +# mysql_variableTSV \'Mysql_server_variable\' bash_dest_variable # +# # +######################################################################### + +mysql_variable () { + local variable=$($MYSQL_COMMAND -Bse "show /*!50000 global */ variables like $1" | awk '{ print $2 }') + export "$2"=$variable +} +mysql_variableTSV () { + local variable=$($MYSQL_COMMAND -Bse "show /*!50000 global */ variables like $1" | awk -F '\t' '{ print $2 }') + export "$2"=$variable +} + +# -- Divide two integers -- # +function divide() +{ + usage="$0 dividend divisor '$variable' scale" + if [ $1 -ge 1 ] ; then + dividend=$1 + else + cecho "Invalid Dividend" red + echo "$usage" + exit 1 + fi + if [ $2 -ge 1 ] ; then + divisor=$2 + else + cecho "Invalid Divisor" red + echo "$usage" + exit 1 + fi + if [ ! -n $3 ] ; then + cecho "Invalid variable name" red + echo "$usage" + exit 1 + fi + if [ -z $4 ] ; then + scale=2 + elif [ $4 -ge 0 ] ; then + scale=$4 + else + cecho "Invalid scale" red + echo "$usage" + exit 1 + fi + export $3=$(echo "scale=$scale; $dividend / $divisor" | bc -l) +} + +human_readable () { + +######################################################################### +# # +# Convert a value in to human readable size and populate a variable # +# with the result. # +# # +# Call using: # +# human_readable $value 'variable name' [ places of precision] # +# # +######################################################################### + + ## value=$1 + ## variable=$2 + scale=$3 + + if [ $1 -ge 1073741824 ] ; then + if [ -z $3 ] ; then + scale=2 + fi + divide $1 1073741824 "$2" $scale + unit="G" + elif [ $1 -ge 1048576 ] ; then + if [ -z $3 ] ; then + scale=0 + fi + divide $1 1048576 "$2" $scale + unit="M" + elif [ $1 -ge 1024 ] ; then + if [ -z $3 ] ; then + scale=0 + fi + divide $1 1024 "$2" $scale + unit="K" + else + export "$2"=$1 + unit="bytes" + fi + # let "$2"=$HR +} + +function human_readable_time() +{ + # Produce human readable time from a duration in seconds. + + # Remove and save any fractional component + local secs="${1%.*}" + local subsecs="${1#$secs}" + + if [ -z $1 ] || [ -z $2 ] ; then + cecho "${FUNCNAME[0]} seconds 'variable'" red + exit 1 + fi + + export $2="$((secs/86400)) days $((secs/3600%24)) hrs $((secs/60%60)) min $((secs%60))$subsecs sec" +} + +check_mysql_version () { + +## -- Print Version Info -- ## + + mysql_variable \'version\' mysql_version + mysql_variable \'version_compile_machine\' mysql_version_compile_machine + +if [ "$mysql_version_num" -lt 050000 ]; then + cecho "MySQL Version $mysql_version $mysql_version_compile_machine is EOL please upgrade to MySQL 4.1 or later" boldred +else + cecho "MySQL Version $mysql_version $mysql_version_compile_machine" +fi + + +} + +post_uptime_warning () { + +######################################################################### +# # +# Present a reminder that mysql must run for a couple of days to # +# build up good numbers in server status variables before these tuning # +# suggestions should be used. # +# # +######################################################################### + + mysql_status \'Uptime\' uptime + mysql_status \'Threads_connected\' threads + queries_per_sec="$(($questions/$uptime)).$(printf '%02d' $((100*$questions/$uptime%100)))" + human_readable_time $uptime uptimeHR + + cecho "Uptime = $uptimeHR" + cecho "Avg. qps = $queries_per_sec" + cecho "Total Questions = $questions" + cecho "Threads Connected = $threads" + echo + + if [ $uptime -gt 172800 ] ; then + cecho "Server has been running for over 48hrs." + cecho "It should be safe to follow these recommendations" + else + cechon "Warning: " boldred + cecho "Server has not been running for at least 48hrs." boldred + cecho "It may not be safe to use these recommendations" boldred + + fi + echo "" + cecho "To find out more information on how each of these" red + cecho "runtime variables effects performance visit:" red + if [ "$major_version" = '3.23' ] || [ "$major_version" = '4.0' ] || [ "$major_version" = '4.1' ] ; then + cecho "http://dev.mysql.com/doc/refman/4.1/en/server-system-variables.html" boldblue + elif [ "$major_version" = '5.0' ] || [ "$mysql_version_num" -gt '050100' ]; then + cecho "http://dev.mysql.com/doc/refman/$major_version/en/server-system-variables.html" boldblue + else + cecho "UNSUPPORTED MYSQL VERSION" boldred + exit 1 + fi + echo "" + cecho "Visit https://git.hhf.technology/hhf/tuning.sh for the latest version of" boldblue + cecho "this script, or to suggest improvements." boldblue +} + +check_slow_queries () { + +## -- Slow Queries -- ## + cecho "SLOW QUERIES" boldblue + + mysql_status \'Slow_queries\' slow_queries + mysql_variable \'long_query_time\' long_query_time + mysql_variable \'log%queries\' log_slow_queries + mysql_variable \'slow_query_log\' slow_query_log + + PREFERRED_QUERY_TIME=5 + if [ -z "$log_slow_queries" ] ; then + log_slow_queries="$slow_query_log" + fi + + if [ "$log_slow_queries" = 'ON' ] ; then + cecho "The slow query log is enabled." + elif [ "$log_slow_queries" = 'OFF' ] || [ -z "$log_slow_queries" ] ; then + cechon "The slow query log is " + cechon "NOT" boldred + cecho " enabled." + return + else + cecho "Slow query log check failed; error(s): $log_slow_queries/$slow_query_log" boldred + fi + + cecho "Current long_query_time = $long_query_time sec." + cechon "Since startup, " + cechon "$slow_queries" boldred + cechon " out of " + cechon "$questions" boldred + cecho " queries have taken longer than to complete." + + if [ "${long_query_time%%.*}" -ge $PREFERRED_QUERY_TIME ] ; then + cecho "Your long_query_time may be too high, I typically set this under $PREFERRED_QUERY_TIME sec." red + elif [ "${long_query_time/.}" -eq 0 ] ; then + cechon "Your long_query_time is set to " + cechon "zero" boldred + cechon ", which will cause " + cechon "ALL queries to be logged" red + cecho "!" + cecho "If you actually WANT to log all queries, use the query log, not the slow query log." + else + cecho "Your long_query_time seems reasonable." green + fi +} + +check_binary_log () { + +## -- Binary Log -- ## + + cecho "BINARY UPDATE LOG" boldblue + + mysql_variable \'log_bin\' log_bin + mysql_variable \'max_binlog_size\' max_binlog_size + mysql_variable \'expire_logs_days\' expire_logs_days + mysql_variable \'sync_binlog\' sync_binlog + # mysql_variable \'max_binlog_cache_size\' max_binlog_cache_size + + if [ "$log_bin" = 'ON' ] ; then + cecho "The binary update log is enabled" + if [ -z "$max_binlog_size" ] ; then + cecho "The max_binlog_size is not set. The binary log will rotate when it reaches 1GB." red + fi + if [ "${expire_logs_days//.}" -eq 0 ] ; then # Turns 0.000 -> 0000. + cecho "The expire_logs_days is not set." boldred + cechon "The mysqld will retain the entire binary log until " red + cecho "RESET MASTER or PURGE MASTER LOGS commands are run manually" red + cecho "Setting expire_logs_days will allow you to remove old binary logs automatically" yellow + cecho "See http://dev.mysql.com/doc/refman/$major_version/en/purge-master-logs.html" yellow + fi + if [ "$sync_binlog" = 0 ] ; then + cecho "Binlog sync is not enabled, you could lose binlog records during a server crash" red + fi + else + cechon "The binary update log is " + cechon "NOT " boldred + cecho "enabled." + cecho "You will not be able to do point in time recovery" red + cecho "See http://dev.mysql.com/doc/refman/$major_version/en/point-in-time-recovery.html" yellow + fi +} + +check_used_connections () { + +## -- Used Connections -- ## + + mysql_variable \'max_connections\' max_connections + mysql_status \'Max_used_connections\' max_used_connections + mysql_status \'Threads_connected\' threads_connected + + connections_ratio=$(($max_used_connections*100/$max_connections)) + + cecho "MAX CONNECTIONS" boldblue + cecho "Current max_connections = $max_connections" + cecho "Current threads_connected = $threads_connected" + cecho "Historic max_used_connections = $max_used_connections" + cechon "The number of used connections is " + if [ $connections_ratio -ge 85 ] ; then + txt_color=red + error=1 + elif [ $connections_ratio -le 10 ] ; then + txt_color=red + error=2 + else + txt_color=green + error=0 + fi + # cechon "$max_used_connections " $txt_color + # cechon "which is " + cechon "$connections_ratio% " $txt_color + cecho "of the configured maximum." + + if [ $error -eq 1 ] ; then + cecho "You should raise max_connections" $txt_color + elif [ $error -eq 2 ] ; then + cecho "You are using less than 10% of your configured max_connections." $txt_color + cecho "Lowering max_connections could help to avoid an over-allocation of memory" $txt_color + cecho "See \"MEMORY USAGE\" section to make sure you are not over-allocating" $txt_color + else + cecho "Your max_connections variable seems to be fine." $txt_color + fi + unset txt_color +} + +check_threads() { + +## -- Worker Threads -- ## + + cecho "WORKER THREADS" boldblue + + mysql_status \'Threads_created\' threads_created1 + sleep 1 + mysql_status \'Threads_created\' threads_created2 + + mysql_status \'Threads_cached\' threads_cached + mysql_status \'Uptime\' uptime + mysql_variable \'thread_cache_size\' thread_cache_size + + historic_threads_per_sec=$(($threads_created1/$uptime)) + current_threads_per_sec=$(($threads_created2-$threads_created1)) + + cecho "Current thread_cache_size = $thread_cache_size" + cecho "Current threads_cached = $threads_cached" + cecho "Current threads_per_sec = $current_threads_per_sec" + cecho "Historic threads_per_sec = $historic_threads_per_sec" + + if [ $historic_threads_per_sec -ge 2 ] && [ $threads_cached -le 1 ] ; then + cecho "Threads created per/sec are overrunning threads cached" red + cecho "You should raise thread_cache_size" red + elif [ $current_threads_per_sec -ge 2 ] ; then + cecho "Threads created per/sec are overrunning threads cached" red + cecho "You should raise thread_cache_size" red + else + cecho "Your thread_cache_size is fine" green + fi +} + +check_key_buffer_size () { + +## -- Key buffer Size -- ## + + cecho "KEY BUFFER" boldblue + + mysql_status \'Key_read_requests\' key_read_requests + mysql_status \'Key_reads\' key_reads + mysql_status \'Key_blocks_used\' key_blocks_used + mysql_status \'Key_blocks_unused\' key_blocks_unused + mysql_variable \'key_cache_block_size\' key_cache_block_size + mysql_variable \'key_buffer_size\' key_buffer_size + mysql_variable \'datadir\' datadir + mysql_variable \'version_compile_machine\' mysql_version_compile_machine + myisam_indexes=$($MYSQL_COMMAND -Bse "/*!50000 SELECT IFNULL(SUM(INDEX_LENGTH),0) from information_schema.TABLES where ENGINE='MyISAM' */") + + if [ -z $myisam_indexes ] ; then + myisam_indexes=$(find $datadir -name '*.MYI' -exec du $duflags '{}' \; 2>&1 | awk '{ s += $1 } END { printf("%.0f\n", s )}') + fi + + if [ $key_reads -eq 0 ] ; then + cecho "No key reads. If you aren't using MyISAM, this is normal. If you are" yellow + cecho "using MyISAM, this is very, very bad." yellow + key_cache_miss_rate=0 + key_buffer_free=$(echo "$key_blocks_unused * $key_cache_block_size / $key_buffer_size * 100" | bc -l ) + key_buffer_freeRND=$(echo "scale=0; $key_buffer_free / 1" | bc -l) + else + key_cache_miss_rate=$(($key_read_requests/$key_reads)) + if [ ! -z $key_blocks_unused ] ; then + key_buffer_free=$(echo "$key_blocks_unused * $key_cache_block_size / $key_buffer_size * 100" | bc -l ) + key_buffer_freeRND=$(echo "scale=0; $key_buffer_free / 1" | bc -l) + else + key_buffer_free='Unknown' + key_buffer_freeRND=75 + fi + fi + + human_readable $myisam_indexes myisam_indexesHR + cecho "Current MyISAM index space = $myisam_indexesHR $unit" + + human_readable $key_buffer_size key_buffer_sizeHR + cecho "Current key_buffer_size = $key_buffer_sizeHR $unit" + cecho "Key cache miss rate is 1 : $key_cache_miss_rate" + cecho "Key buffer free ratio = $key_buffer_freeRND %" + + if [ "$major_version" = '5.1' ] && [ $mysql_version_num -lt 050123 ] ; then + if [ $key_buffer_size -ge 4294967296 ] && ( echo "x86_64 ppc64 ia64 sparc64 i686" | grep -q $mysql_version_compile_machine ) ; then + cecho "Using key_buffer_size > 4GB will cause instability in versions prior to 5.1.23 " boldred + cecho "See Bug#5731, Bug#29419, Bug#29446" boldred + fi + fi + if [ "$major_version" = '5.0' ] && [ $mysql_version_num -lt 050052 ] ; then + if [ $key_buffer_size -ge 4294967296 ] && ( echo "x86_64 ppc64 ia64 sparc64 i686" | grep -q $mysql_version_compile_machine ) ; then + cecho "Using key_buffer_size > 4GB will cause instability in versions prior to 5.0.52 " boldred + cecho "See Bug#5731, Bug#29419, Bug#29446" boldred + fi + fi + if [ "$major_version" = '4.1' -o "$major_version" = '4.0' ] && [ $key_buffer_size -ge 4294967296 ] && ( echo "x86_64 ppc64 ia64 sparc64 i686" | grep -q $mysql_version_compile_machine ) ; then + cecho "Using key_buffer_size > 4GB will cause instability in versions prior to 5.0.52 " boldred + cecho "Reduce key_buffer_size to a safe value" boldred + cecho "See Bug#5731, Bug#29419, Bug#29446" boldred + fi + + if [ $key_cache_miss_rate -le 100 ] && [ $key_cache_miss_rate -gt 0 ] && [ $key_buffer_freeRND -le 20 ]; then + cecho "You could increase key_buffer_size" boldred + cecho "It is safe to raise this up to 1/4 of total system memory;" + cecho "assuming this is a dedicated database server." + elif [ $key_buffer_freeRND -le 20 ] && [ $key_buffer_size -le $myisam_indexes ] ; then + cecho "You could increase key_buffer_size" boldred + cecho "It is safe to raise this up to 1/4 of total system memory;" + cecho "assuming this is a dedicated database server." + elif [ $key_cache_miss_rate -ge 10000 ] || [ $key_buffer_freeRND -le 50 ] ; then + cecho "Your key_buffer_size seems to be too high." red + cecho "Perhaps you can use these resources elsewhere" red + else + cecho "Your key_buffer_size seems to be fine" green + fi +} + +check_query_cache () { + cecho "QUERY CACHE" boldblue + + mysql_variable \'version\' mysql_version + mysql_variable \'query_cache_size\' query_cache_size + mysql_variable \'query_cache_limit\' query_cache_limit + mysql_variable \'query_cache_min_res_unit\' query_cache_min_res_unit + mysql_status \'Qcache_free_memory\' qcache_free_memory + mysql_status \'Qcache_total_blocks\' qcache_total_blocks + mysql_status \'Qcache_free_blocks\' qcache_free_blocks + mysql_status \'Qcache_lowmem_prunes\' qcache_lowmem_prunes + + if [ -z $query_cache_size ] ; then + cecho "Your server does not support the query cache. That's probably a good thing." green + elif [ $query_cache_size -eq 0 ] ; then + cecho "Query cache is supported, but not enabled." yellow + cecho "Determine if enabling cache is advisable given your load characteristics," yellow + cecho "daemon version, and SMP (multiprocessor) status." yellow + else + qcache_used_memory=$(($query_cache_size-$qcache_free_memory)) + qcache_mem_fill_ratio=$(echo "scale=2; $qcache_used_memory * 100 / $query_cache_size" | bc -l) + qcache_mem_fill_ratioHR=$(echo "scale=0; $qcache_mem_fill_ratio / 1" | bc -l) + + cecho "You have query cache enabled. With many versions of the server, you may see" yellow + cecho "query cache lock contention, especially if you have more than one core." yellow + human_readable $query_cache_size query_cache_sizeHR + cecho "Current query_cache_size = $query_cache_sizeHR $unit" + human_readable $qcache_used_memory qcache_used_memoryHR + cecho "Current query_cache_used = $qcache_used_memoryHR $unit" + human_readable $query_cache_limit query_cache_limitHR + cecho "Current query_cache_limit = $query_cache_limitHR $unit" + cecho "Current Query cache Memory fill ratio = $qcache_mem_fill_ratio %" + if [ -z $query_cache_min_res_unit ] ; then + cecho "No query_cache_min_res_unit is defined. Using MySQL < 4.1 cache fragmentation can be inpredictable" yellow + else + human_readable $query_cache_min_res_unit query_cache_min_res_unitHR + cecho "Current query_cache_min_res_unit = $query_cache_min_res_unitHR $unit" + fi + if [ $qcache_free_blocks -gt 2 ] && [ $qcache_total_blocks -gt 0 ] ; then + qcache_percent_fragmented=$(echo "scale=2; $qcache_free_blocks * 100 / $qcache_total_blocks" | bc -l) + qcache_percent_fragmentedHR=$(echo "scale=0; $qcache_percent_fragmented / 1" | bc -l) + if [ $qcache_percent_fragmentedHR -gt 20 ] ; then + cecho "Query Cache is $qcache_percent_fragmentedHR % fragmented" red + cecho "Run \"FLUSH QUERY CACHE\" periodically to defragment the query cache memory" red + cecho "If you have many small queries lower 'query_cache_min_res_unit' to reduce fragmentation." red + fi + fi + + if [ $qcache_mem_fill_ratioHR -le 25 ] ; then + cecho "Your query_cache_size seems to be too high." red + cecho "Perhaps you can use these resources elsewhere" red + fi + if [ $qcache_lowmem_prunes -ge 50 ] && [ $qcache_mem_fill_ratioHR -ge 80 ]; then + cechon "However, " + cechon "$qcache_lowmem_prunes " boldred + cecho "queries have been removed from the query cache due to lack of memory" + cecho "Perhaps you should raise query_cache_size" boldred + fi + cecho "MySQL won't cache query results that are larger than query_cache_limit in size" yellow + fi +} + +check_sort_operations () { + +## -- Sort Operations -- ## + + cecho "SORT OPERATIONS" boldblue + + mysql_status \'Sort_merge_passes\' sort_merge_passes + mysql_status \'Sort_scan\' sort_scan + mysql_status \'Sort_range\' sort_range + mysql_variable \'sort_buffer_size\' sort_buffer_size + mysql_variable \'read_rnd_buffer_size\' read_rnd_buffer_size + + total_sorts=$(($sort_scan+$sort_range)) + if [ -z $read_rnd_buffer_size ] ; then + mysql_variable \'record_buffer\' read_rnd_buffer_size + fi + + ## Correct for rounding error in mysqld where 512K != 524288 ## + sort_buffer_size=$(($sort_buffer_size+8)) + read_rnd_buffer_size=$(($read_rnd_buffer_size+8)) + + human_readable $sort_buffer_size sort_buffer_sizeHR + cecho "Current sort_buffer_size = $sort_buffer_sizeHR $unit" + + human_readable $read_rnd_buffer_size read_rnd_buffer_sizeHR + cechon "Current " + if [ "$major_version" = '3.23' ] ; then + cechon "record_rnd_buffer " + else + cechon "read_rnd_buffer_size " + fi + cecho "= $read_rnd_buffer_sizeHR $unit" + + if [ $total_sorts -eq 0 ] ; then + cecho "No sort operations have been performed" + passes_per_sort=0 + fi + if [ $sort_merge_passes -ne 0 ] ; then + passes_per_sort=$(($sort_merge_passes/$total_sorts)) + else + passes_per_sort=0 + fi + + if [ $passes_per_sort -ge 2 ] ; then + cechon "On average " + cechon "$passes_per_sort " boldred + cecho "sort merge passes are made per sort operation" + cecho "You should raise your sort_buffer_size" + cechon "You should also raise your " + if [ "$major_version" = '3.23' ] ; then + cecho "record_rnd_buffer_size" + else + cecho "read_rnd_buffer_size" + fi + else + cecho "Sort buffer seems to be fine" green + fi +} + +check_join_operations () { + +## -- Joins -- ## + + cecho "JOINS" boldblue + + mysql_status \'Select_full_join\' select_full_join + mysql_status \'Select_range_check\' select_range_check + mysql_variable \'join_buffer_size\' join_buffer_size + + ## Some 4K is dropped from join_buffer_size adding it back to make sane ## + ## handling of human-readable conversion ## + + join_buffer_size=$(($join_buffer_size+4096)) + + human_readable $join_buffer_size join_buffer_sizeHR 2 + + cecho "Current join_buffer_size = $join_buffer_sizeHR $unit" + cecho "You have had $select_full_join queries where a join could not use an index properly" + + if [ $select_range_check -eq 0 ] && [ $select_full_join -eq 0 ] ; then + cecho "Your joins seem to be using indexes properly" green + fi + if [ $select_full_join -gt 0 ] ; then + print_error='true' + raise_buffer='true' + fi + if [ $select_range_check -gt 0 ] ; then + cecho "You have had $select_range_check joins without keys that check for key usage after each row" red + print_error='true' + raise_buffer='true' + fi + + ## For Debugging ## + # print_error='true' + if [ $join_buffer_size -ge 4194304 ] ; then + cecho "join_buffer_size >= 4 M" boldred + cecho "This is not advised" boldred + raise_buffer= + fi + + if [ $print_error ] ; then + if [ "$major_version" = '3.23' ] || [ "$major_version" = '4.0' ] ; then + cecho "You should enable \"log-long-format\" " + elif [ "$mysql_version_num" -gt 040100 ]; then + cecho "You should enable \"log-queries-not-using-indexes\"" + fi + cecho "Then look for non indexed joins in the slow query log." + if [ $raise_buffer ] ; then + cecho "If you are unable to optimize your queries you may want to increase your" + cecho "join_buffer_size to accommodate larger joins in one pass." + printf "\n" + cecho "Note! This script will still suggest raising the join_buffer_size when" boldred + cecho "ANY joins not using indexes are found." boldred + fi + fi + + # XXX Add better tests for join_buffer_size pending mysql bug #15088 XXX # +} + +check_tmp_tables () { + +## -- Temp Tables -- ## + + cecho "TEMP TABLES" boldblue + + mysql_status \'Created_tmp_tables\' created_tmp_tables + mysql_status \'Created_tmp_disk_tables\' created_tmp_disk_tables + mysql_variable \'tmp_table_size\' tmp_table_size + mysql_variable \'max_heap_table_size\' max_heap_table_size + + + if [ $created_tmp_tables -eq 0 ] ; then + tmp_disk_tables=0 + else + tmp_disk_tables=$((created_tmp_disk_tables*100/(created_tmp_tables+created_tmp_disk_tables))) + fi + human_readable $max_heap_table_size max_heap_table_sizeHR + cecho "Current max_heap_table_size = $max_heap_table_sizeHR $unit" + + human_readable $tmp_table_size tmp_table_sizeHR + cecho "Current tmp_table_size = $tmp_table_sizeHR $unit" + + cecho "Of $created_tmp_tables temp tables, $tmp_disk_tables% were created on disk" + if [ $tmp_table_size -gt $max_heap_table_size ] ; then + cecho "Effective in-memory tmp_table_size is limited to max_heap_table_size." yellow + fi + if [ $tmp_disk_tables -ge 25 ] ; then + cecho "Perhaps you should increase your tmp_table_size and/or max_heap_table_size" boldred + cecho "to reduce the number of disk-based temporary tables" boldred + cecho "Note! BLOB and TEXT columns are not allowed in memory tables." yellow + cecho "If you are using these columns raising these values might not impact your " yellow + cecho "ratio of on disk temp tables." yellow + else + cecho "Created disk tmp tables ratio seems fine" green + fi +} + +check_open_files () { + +## -- Open Files Limit -- ## + cecho "OPEN FILES LIMIT" boldblue + + mysql_variable \'open_files_limit\' open_files_limit + mysql_status \'Open_files\' open_files + + if [ -z $open_files_limit ] || [ $open_files_limit -eq 0 ] ; then + open_files_limit=$(ulimit -n) + cant_override=1 + else + cant_override=0 + fi + cecho "Current open_files_limit = $open_files_limit files" + + open_files_ratio=$(($open_files*100/$open_files_limit)) + + cecho "The open_files_limit should typically be set to at least 2x-3x" yellow + cecho "that of table_cache if you have heavy MyISAM usage." yellow + if [ $open_files_ratio -ge 75 ] ; then + cecho "You currently have open more than 75% of your open_files_limit" boldred + if [ $cant_override -eq 1 ] ; then + cecho "You should set a higher value for ulimit -u in the mysql startup script then restart mysqld" boldred + cecho "MySQL 3.23 users : This is just a guess based upon the current shell's ulimit -u value" yellow + elif [ $cant_override -eq 0 ] ; then + cecho "You should set a higher value for open_files_limit in my.cnf" boldred + else + cecho "ERROR can't determine if mysqld override of ulimit is allowed" boldred + exit 1 + fi + else + cecho "Your open_files_limit value seems to be fine" green + fi + + + +} + +check_table_cache () { + +## -- Table Cache -- ## + + cecho "TABLE CACHE" boldblue + + mysql_variable \'datadir\' datadir + mysql_variable \'table_cache\' table_cache + + ## /* MySQL +5.1 version of table_cache */ ## + mysql_variable \'table_open_cache\' table_open_cache + mysql_variable \'table_definition_cache\' table_definition_cache + + mysql_status \'Open_tables\' open_tables + mysql_status \'Opened_tables\' opened_tables + mysql_status \'Open_table_definitions\' open_table_definitions + + table_count=$($MYSQL_COMMAND -Bse "/*!50000 SELECT COUNT(*) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE='BASE TABLE' */") + + if [ -z "$table_count" ] ; then + if [ "$UID" != "$socket_owner" ] && [ "$UID" != "0" ] ; then + cecho "You are not '$socket_owner' or 'root'" red + cecho "I am unable to determine the table_count!" red + else + table_count=$(find $datadir 2>&1 | grep -c .frm$) + fi + fi + if [ $table_open_cache ] ; then + table_cache=$table_open_cache + fi + + if [ $opened_tables -ne 0 ] && [ $table_cache -ne 0 ] ; then + table_cache_hit_rate=$(($open_tables*100/$opened_tables)) + table_cache_fill=$(($open_tables*100/$table_cache)) + elif [ $opened_tables -eq 0 ] && [ $table_cache -ne 0 ] ; then + table_cache_hit_rate=100 + table_cache_fill=$(($open_tables*100/$table_cache)) + else + cecho "ERROR no table_cache ?!" boldred + exit 1 + fi + if [ $table_cache ] && [ ! $table_open_cache ] ; then + cecho "Current table_cache value = $table_cache tables" + fi + if [ $table_open_cache ] ; then + cecho "Current table_open_cache = $table_open_cache tables" + cecho "Current table_definition_cache = $table_definition_cache tables" + fi + if [ $table_count ] ; then + cecho "You have a total of $table_count tables" + fi + + if [ $table_cache_fill -lt 95 ] ; then + cechon "You have " + cechon "$open_tables " green + cecho "open tables." + cecho "The table_cache value seems to be fine" green + elif [ $table_cache_hit_rate -le 85 -o $table_cache_fill -ge 95 ]; then + cechon "You have " + cechon "$open_tables " boldred + cecho "open tables." + cechon "Current table_cache hit rate is " + cecho "$table_cache_hit_rate%" boldred + cechon ", while " + cechon "$table_cache_fill% " boldred + cecho "of your table cache is in use" + cecho "You should probably increase your table_cache" red + else + cechon "Current table_cache hit rate is " + cechon "$table_cache_hit_rate%" green + cechon ", while " + cechon "$table_cache_fill% " green + cecho "of your table cache is in use" + cecho "The table cache value seems to be fine" green + fi + if [ $table_definition_cache ] && [ $table_definition_cache -le $table_count ] && [ $table_count -ge 100 ] ; then + cecho "You should probably increase your table_definition_cache value." red + fi +} + +check_table_locking () { + +## -- Table Locking -- ## + + cecho "TABLE LOCKING" boldblue + + mysql_status \'Table_locks_waited\' table_locks_waited + mysql_status \'Table_locks_immediate\' table_locks_immediate + mysql_variable \'concurrent_insert\' concurrent_insert + mysql_variable \'low_priority_updates\' low_priority_updates + if [ "$concurrent_insert" = 'ON' ]; then + concurrent_insert=1 + elif [ "$concurrent_insert" = 'OFF' ]; then + concurrent_insert=0 + fi + + cechon "Current Lock Wait ratio = " + if [ $table_locks_waited -gt 0 ]; then + immediate_locks_miss_rate=$(($table_locks_immediate/$table_locks_waited)) + cecho "1 : $immediate_locks_miss_rate" red + else + immediate_locks_miss_rate=99999 # perfect + cecho "0 : $questions" + fi + if [ $immediate_locks_miss_rate -lt 5000 ] ; then + cecho "You may benefit from selective use of InnoDB." + if [ "$low_priority_updates" = 'OFF' ] ; then + cecho "If you have long-running SELECT's against MyISAM tables and perform" + cecho "frequent updates consider setting 'low_priority_updates=1'" + fi + if [ "$mysql_version_num" -gt 050000 ] && [ "$mysql_version_num" -lt 050500 ]; then + if [ $concurrent_insert -le 1 ] ; then + cecho "If you have a high concurrency of inserts on Dynamic row-length tables" + cecho "consider setting 'concurrent_insert=2'." + fi + elif [ "$mysql_version_num" -gt 050500 ] ; then + if [ "$concurrent_insert" = 'AUTO' ] || [ "$concurrent_insert" = 'NEVER' ] ; then + cecho "If you have a high concurrency of inserts on Dynamic row-length tables" + cecho "consider setting 'concurrent_insert=ALWAYS'." + fi + fi + else + cecho "Your table locking seems to be fine" green + fi +} + +check_table_scans () { + +## -- Table Scans -- ## + + cecho "TABLE SCANS" boldblue + + mysql_status \'Com_select\' com_select + mysql_status \'Handler_read_rnd_next\' read_rnd_next + mysql_variable \'read_buffer_size\' read_buffer_size + + if [ -z $read_buffer_size ] ; then + mysql_variable \'record_buffer\' read_buffer_size + fi + + human_readable $read_buffer_size read_buffer_sizeHR + cecho "Current read_buffer_size = $read_buffer_sizeHR $unit" + + if [ $com_select -gt 0 ] ; then + full_table_scans=$(($read_rnd_next/$com_select)) + cecho "Current table scan ratio = $full_table_scans : 1" + if [ $full_table_scans -ge 4000 ] && [ $read_buffer_size -le 2097152 ] ; then + cecho "You have a high ratio of sequential access requests to SELECTs" red + cechon "You may benefit from raising " red + if [ "$major_version" = '3.23' ] ; then + cechon "record_buffer " red + else + cechon "read_buffer_size " red + fi + cecho "and/or improving your use of indexes." red + elif [ $read_buffer_size -gt 8388608 ] ; then + cechon "read_buffer_size is over 8 MB " red + cecho "there is probably no need for such a large read_buffer" red + + else + cecho "read_buffer_size seems to be fine" green + fi + else + cecho "read_buffer_size seems to be fine" green + fi +} + +function check_innodb_status() +{ + ## See http://bugs.mysql.com/59393 + + mysql_variable \'have_innodb\' have_innodb + + if [ "$mysql_version_num" -lt 050500 ] && [ "$have_innodb" = "YES" ] ; then + innodb_enabled=1 + fi + + if [ "${mysql_version//Maria}" != "${mysql_version}" ] || \ + [ "${mysql_version_num}" -ge 050700 ]; then + # In MariaDB and MySQL >=5.7, InnoDB is always present, excepting Rocks and the like. + mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb + # MariaDB gives you a lovely option for disabling InnoDB that doesn't _technically_ + # necessitate setting ignore_builtin_innodb. Thanks for that. Very cute. See + # https://git.hhf.technology/hhf/tuning.sh/issues/12 . + if [ "$ignore_builtin_innodb" = "ON" ] || [ "$have_innodb" = "DISABLED" ] || [ "$have_innodb" = "NO" ]; then + innodb_enabled=0 + else + innodb_enabled=1 + fi + elif [ "$mysql_version_num" -ge 050500 ] && [ "$mysql_version_num" -lt 050512 ] ; then + mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb + if [ "$ignore_builtin_innodb" = "ON" ] || [ $have_innodb = "NO" ] ; then + innodb_enabled=0 + else + innodb_enabled=1 + fi + elif [ "$major_version" = '5.5' ] && [ "$mysql_version_num" -ge 050512 ] ; then + mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb + if [ "$ignore_builtin_innodb" = "ON" ] ; then + innodb_enabled=0 + else + innodb_enabled=1 + fi + elif [ "$mysql_version_num" -ge 050600 ] && [ "$mysql_version_num" -lt 050603 ] ; then + mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb + if [ "$ignore_builtin_innodb" = "ON" ] || [ $have_innodb = "NO" ] ; then + innodb_enabled=0 + else + innodb_enabled=1 + fi + elif [ "$major_version" = '5.6' ] && [ "$mysql_version_num" -ge 050603 ] ; then + mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb + if [ "$ignore_builtin_innodb" = "ON" ] ; then + innodb_enabled=0 + else + innodb_enabled=1 + fi + fi + + if [ "$innodb_enabled" = 1 ] ; then + mysql_variable \'innodb_buffer_pool_size\' innodb_buffer_pool_size + mysql_variable \'innodb_additional_mem_pool_size\' innodb_additional_mem_pool_size + mysql_variable \'innodb_fast_shutdown\' innodb_fast_shutdown + mysql_variable \'innodb_flush_log_at_trx_commit\' innodb_flush_log_at_trx_commit + mysql_variable \'innodb_locks_unsafe_for_binlog\' innodb_locks_unsafe_for_binlog + mysql_variable \'innodb_log_buffer_size\' innodb_log_buffer_size + mysql_variable \'innodb_log_file_size\' innodb_log_file_size + mysql_variable \'innodb_log_files_in_group\' innodb_log_files_in_group + mysql_variable \'innodb_safe_binlog\' innodb_safe_binlog + mysql_variable \'innodb_thread_concurrency\' innodb_thread_concurrency + + cecho "INNODB STATUS" boldblue + innodb_indexes=$($MYSQL_COMMAND -Bse "/*!50000 SELECT IFNULL(SUM(INDEX_LENGTH),0) from information_schema.TABLES where ENGINE='InnoDB' */") + innodb_data=$($MYSQL_COMMAND -Bse "/*!50000 SELECT IFNULL(SUM(DATA_LENGTH),0) from information_schema.TABLES where ENGINE='InnoDB' */") + + if [ ! -z "$innodb_indexes" ] ; then + mysql_status \'Innodb_buffer_pool_pages_data\' innodb_buffer_pool_pages_data + mysql_status \'Innodb_buffer_pool_pages_misc\' innodb_buffer_pool_pages_misc + mysql_status \'Innodb_buffer_pool_pages_free\' innodb_buffer_pool_pages_free + mysql_status \'Innodb_buffer_pool_pages_total\' innodb_buffer_pool_pages_total + + mysql_status \'Innodb_buffer_pool_read_ahead_seq\' innodb_buffer_pool_read_ahead_seq + mysql_status \'Innodb_buffer_pool_read_requests\' innodb_buffer_pool_read_requests + + mysql_status \'Innodb_os_log_pending_fsyncs\' innodb_os_log_pending_fsyncs + mysql_status \'Innodb_os_log_pending_writes\' innodb_os_log_pending_writes + mysql_status \'Innodb_log_waits\' innodb_log_waits + + mysql_status \'Innodb_row_lock_time\' innodb_row_lock_time + mysql_status \'Innodb_row_lock_waits\' innodb_row_lock_waits + + human_readable $innodb_indexes innodb_indexesHR + cecho "Current InnoDB index space = $innodb_indexesHR $unit" + human_readable $innodb_data innodb_dataHR + cecho "Current InnoDB data space = $innodb_dataHR $unit" + percent_innodb_buffer_pool_free=$(($innodb_buffer_pool_pages_free*100/$innodb_buffer_pool_pages_total)) + cecho "Current InnoDB buffer pool free = ${percent_innodb_buffer_pool_free} %" + + else + cecho "Cannot parse InnoDB stats prior to 5.0.x" red + $MYSQL_COMMAND -s -e "SHOW /*!50000 ENGINE */ INNODB STATUS\G" + fi + + human_readable $innodb_buffer_pool_size innodb_buffer_pool_sizeHR + cecho "Current innodb_buffer_pool_size = $innodb_buffer_pool_sizeHR $unit" + cecho "Depending on how much space your innodb indexes take up it may be safe" + cecho "to increase this value to up to 2 / 3 of total system memory" + else + cecho "No InnoDB Support Enabled!" boldred + fi +} + +total_memory_used () { + +## -- Total Memory Usage -- ## + cecho "MEMORY USAGE" boldblue + + mysql_variable \'read_buffer_size\' read_buffer_size + mysql_variable \'read_rnd_buffer_size\' read_rnd_buffer_size + mysql_variable \'sort_buffer_size\' sort_buffer_size + mysql_variable \'thread_stack\' thread_stack + mysql_variable \'max_connections\' max_connections + mysql_variable \'join_buffer_size\' join_buffer_size + mysql_variable \'tmp_table_size\' tmp_table_size + mysql_variable \'max_heap_table_size\' max_heap_table_size + mysql_variable \'log_bin\' log_bin + mysql_status \'Max_used_connections\' max_used_connections + + if [ "$major_version" = "3.23" ] ; then + mysql_variable \'record_buffer\' read_buffer_size + mysql_variable \'record_rnd_buffer\' read_rnd_buffer_size + mysql_variable \'sort_buffer\' sort_buffer_size + fi + + if [ "$log_bin" = "ON" ] ; then + mysql_variable \'binlog_cache_size\' binlog_cache_size + else + binlog_cache_size=0 + fi + + if [ $max_heap_table_size -le $tmp_table_size ] ; then + effective_tmp_table_size=$max_heap_table_size + else + effective_tmp_table_size=$tmp_table_size + fi + + + per_thread_buffers=$(echo "($read_buffer_size+$read_rnd_buffer_size+$sort_buffer_size+$thread_stack+$join_buffer_size+$binlog_cache_size)*$max_connections" | bc -l) + per_thread_max_buffers=$(echo "($read_buffer_size+$read_rnd_buffer_size+$sort_buffer_size+$thread_stack+$join_buffer_size+$binlog_cache_size)*$max_used_connections" | bc -l) + + mysql_variable \'innodb_buffer_pool_size\' innodb_buffer_pool_size + if [ -z $innodb_buffer_pool_size ] ; then + innodb_buffer_pool_size=0 + fi + + mysql_variable \'innodb_additional_mem_pool_size\' innodb_additional_mem_pool_size + if [ -z $innodb_additional_mem_pool_size ] ; then + innodb_additional_mem_pool_size=0 + fi + + mysql_variable \'innodb_log_buffer_size\' innodb_log_buffer_size + if [ -z $innodb_log_buffer_size ] ; then + innodb_log_buffer_size=0 + fi + + mysql_variable \'key_buffer_size\' key_buffer_size + + mysql_variable \'query_cache_size\' query_cache_size + if [ -z $query_cache_size ] ; then + query_cache_size=0 + fi + + global_buffers=$(echo "$innodb_buffer_pool_size+$innodb_additional_mem_pool_size+$innodb_log_buffer_size+$key_buffer_size+$query_cache_size" | bc -l) + + + max_memory=$(echo "$global_buffers+$per_thread_max_buffers" | bc -l) + total_memory=$(echo "$global_buffers+$per_thread_buffers" | bc -l) + + pct_of_sys_mem=$(echo "scale=0; $total_memory*100/$physical_memory" | bc -l) + + if [ $pct_of_sys_mem -gt 90 ] ; then + txt_color=boldred + error=1 + else + txt_color= + error=0 + fi + + human_readable $max_memory max_memoryHR + cecho "Max Memory Ever Allocated : $max_memoryHR $unit" $txt_color + human_readable $per_thread_buffers per_thread_buffersHR + cecho "Configured Max Per-thread Buffers : $per_thread_buffersHR $unit" $txt_color + human_readable $global_buffers global_buffersHR + cecho "Configured Max Global Buffers : $global_buffersHR $unit" $txt_color + human_readable $total_memory total_memoryHR + cecho "Configured Max Memory Limit : $total_memoryHR $unit" $txt_color +# human_readable $effective_tmp_table_size effective_tmp_table_sizeHR +# cecho "Plus $effective_tmp_table_sizeHR $unit per temporary table created" + human_readable $physical_memory physical_memoryHR + cecho "Physical Memory : $physical_memoryHR $unit" $txt_color + if [ $error -eq 1 ] ; then + printf "\n" + cecho "Max memory limit exceeds 90% of physical memory" $txt_color + else + cecho "Max memory limit seem to be within acceptable norms" green + fi + unset txt_color +} + +## Required Functions ## + +login_validation () { + export MYSQL_COMMAND="mysql" + export MYSQLADMIN_COMMAND="mysqladmin" + + if [ -n "${socket-}" ]; then + # First, we look for a socket. Then, we try to find old Plesk + # login creds (is this still needed?). Then, we try the truly + # revolutionary approach of just trying to connect and seeing + # what happens. + check_for_socket || + check_for_plesk_passwords || + check_mysql_login || + exit 1 + else + # If the user didn't specify a socket for us (and they usually + # won't), let's try to just connect and see if that works. If + # it doesn't, try to guess at a socket path, and then break out + # the ol' Plesk trick if things get really desperate. + check_mysql_login || + check_for_socket || + check_for_plesk_passwords || + exit 1 + fi + export major_version=$($MYSQL_COMMAND -Bse "SELECT SUBSTRING_INDEX(VERSION(), '.', +2)") +# export mysql_version_num=$($MYSQL_COMMAND -Bse "SELECT LEFT(REPLACE(SUBSTRING_INDEX(VERSION(), '-', +1), '.', ''),4)" ) + export mysql_version_num=$($MYSQL_COMMAND -Bse "SELECT VERSION()" | + awk -F \. '{ printf "%02d", $1; printf "%02d", $2; printf "%02d", $3 }') + +} + +shared_info () { + export major_version=$($MYSQL_COMMAND -Bse "SELECT SUBSTRING_INDEX(VERSION(), '.', +2)") + # export mysql_version_num=$($MYSQL_COMMAND -Bse "SELECT LEFT(REPLACE(SUBSTRING_INDEX(VERSION(), '-', +1), '.', ''),4)" ) + export mysql_version_num=$($MYSQL_COMMAND -Bse "SELECT VERSION()" | + awk -F \. '{ printf "%02d", $1; printf "%02d", $2; printf "%02d", $3 }') + mysql_status \'Questions\' questions +# socket_owner=$(find -L $socket -printf '%u\n') + socket_owner=$(ls -nH $socket | awk '{ print $3 }') +} + + +get_system_info () { + + export OS=$(uname) + + # Get information for various UNIXes + if [ "$OS" = 'Darwin' ]; then + ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1) + found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }') + export physical_memory=$(sysctl -n hw.memsize) + export duflags='' + elif [ "$OS" = 'FreeBSD' ] || [ "$OS" = 'OpenBSD' ]; then + ## On FreeBSD must be root to locate sockets. + ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1) + found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }') + export physical_memory=$(sysctl -n hw.realmem) + export duflags='' + elif [ "$OS" = 'Linux' ] ; then + ## Includes SWAP + ## export physical_memory=$(free -b | grep -v buffers | awk '{ s += $2 } END { printf("%.0f\n", s ) }') + if command -v netstat 2>/dev/null >/dev/null; then + ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1) + found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }') + else + ps_socket=$(ss -ln 2>/dev/null | awk '/mysql(.*)?\.sock/ { print $5; exit }') + ps_socket=$(ss -ln 2>/dev/null | awk '/mysql(.*)?\.sock/ { print $5 }') + fi + export physical_memory=$(awk '/^MemTotal/ { printf("%.0f", $2*1024 ) }' < /proc/meminfo) + export duflags='-b' + elif [ "$OS" = 'SunOS' ] ; then + ps_socket=$(netstat -an | awk '/mysql(.*)?.sock/ { print $5 }' | head -1) + found_socks=$(netstat -an | awk '/mysql(.*)?.sock/ { print $5 }') + export physical_memory=$(prtconf | awk '/^Memory\ size:/ { print $3*1048576 }') + fi + if [ -z "$(which bc)" ] ; then + echo "Error: Command line calculator 'bc' not found!" + exit + fi +} + + +## Optional Components Groups ## + +banner_info () { + shared_info + print_banner ; echo + check_mysql_version ; echo + post_uptime_warning ; echo +} + +misc () { + shared_info + check_slow_queries ; echo + check_binary_log ; echo + check_threads ; echo + check_used_connections ; echo + check_innodb_status ; echo +} + +memory () { + shared_info + total_memory_used ; echo + check_key_buffer_size ; echo + check_query_cache ; echo + check_sort_operations ; echo + check_join_operations ; echo +} + +file () { + shared_info + check_open_files ; echo + check_table_cache ; echo + check_tmp_tables ; echo + check_table_scans ; echo + check_table_locking ; echo +} + +all () { + banner_info + misc + memory + file +} + +prompt () { + prompted='true' + read -p "Username [anonymous] : " user + read -rsp "Password [] : " pass + cecho " " + read -p "Socket [ /var/lib/mysql/mysql.sock ] : " socket + if [ -z $socket ] ; then + export socket='/var/lib/mysql/mysql.sock' + fi + + local tempmycnf + tempmycnf="$(mktemp)" + write_mycnf "$tempmycnf" "$socket" "$user" "$pass" + + export MYSQL_COMMAND="mysql --defaults-extra-file=$tempmycnf -u$user" + export MYSQLADMIN_COMMAND="mysqladmin --defaults-extra-file=$tempmycnf -u$user" + + check_for_socket || \ + check_mysql_login + + if [ $? = 1 ] ; then + exit 1 + fi + read -p "Mode to test - banner, file, misc, mem, innodb, [all] : " REPLY + if [ -z $REPLY ] ; then + REPLY='all' + fi + case $REPLY in + banner | BANNER | header | HEADER | head | HEAD) + banner_info + ;; + misc | MISC | miscellaneous ) + misc + ;; + mem | memory | MEM | MEMORY ) + memory + ;; + file | FILE | disk | DISK ) + file + ;; + innodb | INNODB ) + innodb + ;; + all | ALL ) + cecho " " + all + ;; + * ) + cecho "Invalid Mode! Valid options are 'banner', 'misc', 'memory', 'file', 'innodb' or 'all'" boldred + exit 1 + ;; + esac +} + +## Address environmental differences ## +get_system_info +# echo $ps_socket + +mode="$1" +if [ -z "${1-}" ] ; then + login_validation + mode='ALL' +elif [ "$1" != "prompt" ] && [ "$1" != "PROMPT" ] ; then + login_validation +fi + +case $mode in + all | ALL ) + cecho " " + all + ;; + mem | memory | MEM | MEMORY ) + cecho " " + memory + ;; + file | FILE | disk | DISK ) + cecho " " + file + ;; + banner | BANNER | header | HEADER | head | HEAD ) + banner_info + ;; + misc | MISC | miscellaneous ) + cecho " " + misc + ;; + innodb | INNODB ) + banner_info + check_innodb_status ; echo + ;; + prompt | PROMPT ) + prompt + ;; + debug | DEBUG ) + # Run everything, then dump state. + all >/dev/null + env + ;; + *) + cecho "usage: $0 [ all | banner | file | innodb | memory | misc | prompt ]" boldred + exit 1 + ;; +esac \ No newline at end of file