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tuning-primer.sh
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File tuning-primer.sh of Package mysql-tuning-scripts
#!/bin/bash # vim: sw=2:et ######################################################################### # # # MySQL performance tuning primer script # # Writen by: Matthew Montgomery and Dan Reif # # Report bugs to: https://github.com/BMDan/tuning-primer.sh/issues# # Inspired by: MySQLARd (http://gert.sos.be/demo/mysqlar/) # # Version: 1.99 Released: 2018-06-10 # # Licenced under GPLv2 # # # ######################################################################### ######################################################################### # # # Usage: ./tuning-primer.sh [ mode ] # # # # Available Modes: # # all : perform all checks (default) # # prompt : prompt for login credintials and socket # # and execution mode # # mem, memory : run checks for tunable options which # # effect memory usage # # disk, file : run checks for options which effect # # i/o performance or file handle limits # # innodb : run InnoDB checks /* to be improved */ # # misc : run checks for that don't categorise # # 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 easliy 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 "$2" ] && socketcomment="#" cat > "${1}" <<EOF [client] ${socketcomment}socket=$2 user=$3 password=$4 EOF } function print_banner() { cecho " -- MYSQL PERFORMANCE TUNING PRIMER --" boldblue cecho " - By: Matthew Montgomery -" black } ## -- Find the location of the mysql.sock file -- ## function check_for_socket() { if [ -n "$socket" ] && [ ! -S "$socket" ]; then cecho "No valid socket file at '$socket'!" boldred cecho "You've explicitly specified a socket location, but that location either" red cecho "doesn't exist, or isn't a socket." red exit 1 fi if [ -z "$socket" ] ; then # Use ~/.my.cnf version if [ -f ~/.my.cnf ] ; then # Use the last one we find in the file. We could be smarter here and # parse section headers and so forth, but meh. cnf_socket="$(awk -F '=' '$1 == "socket" { s=$2 } END { print s }' ~/.my.cnf)" fi if [ -S "$cnf_socket" ] ; then socket=$cnf_socket elif [ -S /var/lib/mysql/mysql.sock ] ; then socket=/var/lib/mysql/mysql.sock elif [ -S /var/run/mysqld/mysqld.sock ] ; then socket=/var/run/mysqld/mysqld.sock elif [ -S /tmp/mysql.sock ] ; then socket=/tmp/mysql.sock else if [ -S "$ps_socket" ] ; then socket=$ps_socket fi fi fi if [ -S "$socket" ] ; then echo UP > /dev/null else cecho "No valid socket file \"$socket\" found!" boldred cecho "The mysqld process is not running or it is installed in a custom location." red cecho "If you are sure mysqld is running, execute script in \"prompt\" mode or set " red cecho "the socket= variable at the top of this script" red exit 1 fi } check_for_plesk_passwords () { ## -- Check for the existance of plesk and login using its credentials -- ## if [ -f /etc/psa/.psa.shadow ] ; then MYSQL_COMMAND="mysql -S $socket -u admin -p$(cat /etc/psa/.psa.shadow)" MYSQLADMIN_COMMAND="mysqladmin -S $socket -u admin -p$(cat /etc/psa/.psa.shadow)" else MYSQL_COMMAND="mysql" MYSQLADMIN_COMMAND="mysqladmin" # mysql="mysql -S $socket" # mysqladmin="mysqladmin -S $socket" fi } check_mysql_login () { ## -- Test for running mysql -- ## is_up=$($MYSQLADMIN_COMMAND ping 2>&1) if [ "$is_up" = "mysqld is alive" ] ; then echo UP > /dev/null else printf "\n" cecho "Using login values from ~/.my.cnf" cecho "- INITIAL LOGIN ATTEMPT FAILED -" boldred if [ -z $prompted ] ; then find_webmin_passwords else return 1 fi fi } final_login_attempt () { is_up=$($MYSQLADMIN_COMMAND ping 2>&1) if [ "$is_up" = "mysqld is alive" ] ; then echo UP > /dev/null 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: $found_socks" cecho "Using: $socket" red read -p "Would you like to provide a different socket?: [y/N] " REPLY case $REPLY in yes | y | Y | YES) read -p "Socket: " socket ;; esac read -p "Do you have your login handy ? [y/N] : " REPLY case $REPLY in yes | y | Y | YES) answer1='yes' read -p "User: " user read -rsp "Password: " pass local MYSQL_COMMAND_PARAMS="-S $socket -u$user" export MYSQL_COMMAND="mysql $MYSQL_COMMAND_PARAMS" export MYSQLADMIN_COMMAND="mysqladmin $MYSQL_COMMAND_PARAMS" ;; *) 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 } float2int () { local variable=$(echo "$1 / 1" | bc -l) 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)) 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 cecho "Visit http://www.mysql.com/products/enterprise/advisors.html" boldblue cecho "for info about MySQL's Enterprise Monitoring and Advisory Service" boldblue } check_slow_queries () { ## -- Slow Queries -- ## # FIXME: multiple parts of this are rather awful, not least how the option is tested. 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 prefered_query_time=5 if [ -e /etc/my.cnf ] ; then if [ -z $log_slow_queries ] ; then log_slow_queries=$(grep log-slow-queries /etc/my.cnf) fi fi if [ "$log_slow_queries" = 'ON' ] ; then cecho "The slow query log is enabled." elif [ "$log_slow_queries" = 'OFF' ] ; then cechon "The slow query log is " cechon "NOT" boldred cecho " enabled." elif [ -z $log_slow_queries ] ; then cechon "The slow query log is " cechon "NOT" boldred cecho " enabled." else cecho "Error: $log_slow_queries" boldred fi cecho "Current long_query_time = $long_query_time sec." cechon "You have " cechon "$slow_queries" boldred cechon " out of " cechon "$questions" boldred cecho " that take longer than $long_query_time sec. to complete" float2int long_query_time long_query_timeInt if [ $long_query_timeInt -gt $prefered_query_time ] ; then cecho "Your long_query_time may be too high, I typically set this under $prefered_query_time sec." red else cecho "Your long_query_time seems to be fine" green fi } check_binary_log () { ## -- Binary Log -- ## cecho "BINARY UPDATE LOG" boldblue mysql_variable \'log_bin\' log_bin mysql_variable \'max_binlog_size\' max_binlog_size mysql_variable \'expire_logs_days\' expire_logs_days mysql_variable \'sync_binlog\' sync_binlog # mysql_variable \'max_binlog_cache_size\' max_binlog_cache_size if [ "$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 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 loose 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 [ $key_reads -eq 0 ] ; then cecho "No key reads?!" boldred cecho "Seriously look into using some indexes" red key_cache_miss_rate=0 key_buffer_free=$(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 () { ## -- 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 "You are using MySQL $mysql_version, no query cache is supported." red cecho "I recommend an upgrade to MySQL 4.1 or better" red elif [ $query_cache_size -eq 0 ] ; then cecho "Query cache is supported but not enabled" red cecho "Perhaps you should set the query_cache_size" red else qcache_used_memory=$(($query_cache_size-$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 "Query cache is enabled" green 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 Debuging ## # 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 allow 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 higer 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 [ $read_buffer_size -gt 8388608 ] ; then cechon "read_buffer_size is over 8 MB " red cecho "there is probably no need for such a large read_buffer" red else cecho "read_buffer_size seems to be fine" green fi else cecho "read_buffer_size seems to be fine" green fi } function check_innodb_status() { ## See http://bugs.mysql.com/59393 if [ "$mysql_version_num" -lt 050603 ] ; then mysql_variable \'have_innodb\' have_innodb fi if [ "$mysql_version_num" -lt 050500 ] && [ "$have_innodb" = "YES" ] ; then innodb_enabled=1 fi if [ "${mysql_version//Maria}" != "${mysql_version}" ] || \ [ "${mysql_version_num}" -ge 050700 ]; then # In MariaDB and MySQL >=5.7, InnoDB is always present, excepting Rocks and the like. mysql_variable \'ignore_builtin_innodb\' ignore_builtin_innodb if [ "$ignore_builtin_innodb" = "ON" ] ; 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" $txt_color else cecho "Max memory limit seem to be within acceptable norms" green fi unset txt_color } ## Required Functions ## login_validation () { check_for_socket # determine the socket location -- 1st login check_for_plesk_passwords # determine the login method -- 2nd login check_mysql_login # determine if mysql is accepting login -- 3rd login export major_version=$($MYSQL_COMMAND -Bse "SELECT SUBSTRING_INDEX(VERSION(), '.', +2)") # export mysql_version_num=$($MYSQL_COMMAND -Bse "SELECT LEFT(REPLACE(SUBSTRING_INDEX(VERSION(), '-', +1), '.', ''),4)" ) export mysql_version_num=$($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 += $2 } END { printf("%.0f\n", s ) }') ps_socket=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }' | head -1) found_socks=$(netstat -ln | awk '/mysql(.*)?\.sock/ { print $9 }') export physical_memory=$(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 [<none>] : " 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 -S $socket -u$user" export MYSQLADMIN_COMMAND="mysqladmin --defaults-extra-file=$tempmycnf -S $socket -u$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 | miscelaneous ) 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 $ps_socket if [ -z "${1-}" ] ; then login_validation mode='ALL' elif [ "$1" = "prompt" ] || [ "$1" = "PROMPT" ] ; then mode=$1 elif [ "$1" != "prompt" ] || [ "$1" != "PROMPT" ] ; then login_validation mode=$1 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 | miscelaneous ) 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
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