#!/bin/bash # http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html # # https://dev.mysql.com/doc/refman/5.1/en/show-status.html # SHOW STATUS provides server status information (see Section 5.1.6, “Server Status Variables”). # This statement does not require any privilege. # It requires only the ability to connect to the server. mysql_update_every=5 mysql_priority=60000 declare -A mysql_cmds=() mysql_opts=() mysql_ids=() mysql_exec() { local ret "${@}" -s -e "show global status;" ret=$? [ $ret -ne 0 ] && echo "plugin_command_failure $ret" return $ret } mysql_get() { unset \ mysql_Bytes_received \ mysql_Bytes_sent \ mysql_Queries \ mysql_Questions \ mysql_Slow_queries \ mysql_Handler_commit \ mysql_Handler_delete \ mysql_Handler_prepare \ mysql_Handler_read_first \ mysql_Handler_read_key \ mysql_Handler_read_next \ mysql_Handler_read_prev \ mysql_Handler_read_rnd \ mysql_Handler_read_rnd_next \ mysql_Handler_rollback \ mysql_Handler_savepoint \ mysql_Handler_savepoint_rollback \ mysql_Handler_update \ mysql_Handler_write \ mysql_Table_locks_immediate \ mysql_Table_locks_waited \ mysql_Select_full_join \ mysql_Select_full_range_join \ mysql_Select_range \ mysql_Select_range_check \ mysql_Select_scan \ mysql_Sort_merge_passes \ mysql_Sort_range \ mysql_Sort_scan \ mysql_Created_tmp_disk_tables \ mysql_Created_tmp_files \ mysql_Created_tmp_tables \ mysql_Connection_errors_accept \ mysql_Connection_errors_internal \ mysql_Connection_errors_max_connections \ mysql_Connection_errors_peer_addr \ mysql_Connection_errors_select \ mysql_Connection_errors_tcpwrap \ mysql_Connections \ mysql_Aborted_connects \ mysql_Binlog_cache_disk_use \ mysql_Binlog_cache_use \ mysql_Binlog_stmt_cache_disk_use \ mysql_Binlog_stmt_cache_use \ mysql_Threads_connected \ mysql_Threads_created \ mysql_Threads_cached \ mysql_Threads_running \ mysql_Innodb_data_read \ mysql_Innodb_data_written \ mysql_Innodb_data_reads \ mysql_Innodb_data_writes \ mysql_Innodb_data_fsyncs \ mysql_Innodb_data_pending_reads \ mysql_Innodb_data_pending_writes \ mysql_Innodb_data_pending_fsyncs \ mysql_Innodb_log_waits \ mysql_Innodb_log_write_requests \ mysql_Innodb_log_writes \ mysql_Innodb_os_log_fsyncs \ mysql_Innodb_os_log_pending_fsyncs \ mysql_Innodb_os_log_pending_writes \ mysql_Innodb_os_log_written \ mysql_Innodb_row_lock_current_waits \ mysql_Innodb_rows_inserted \ mysql_Innodb_rows_read \ mysql_Innodb_rows_updated \ mysql_Innodb_rows_deleted mysql_plugin_command_failure=0 eval "$(mysql_exec "${@}" |\ sed \ -e "s/[[:space:]]\+/ /g" \ -e "s/\./_/g" \ -e "s/^\([a-zA-Z0-9_]\+\)[[:space:]]\+\([0-9]\+\)$/mysql_\1=\2/g" |\ egrep "^mysql_[a-zA-Z0-9_]+=[[:digit:]]+$")" [ $mysql_plugin_command_failure -eq 1 ] && return 1 [ -z "$mysql_Connections" ] && return 1 mysql_Thread_cache_misses=0 [ $(( mysql_Connections + 1 - 1 )) -gt 0 ] && mysql_Thread_cache_misses=$(( mysql_Threads_created * 10000 / mysql_Connections )) return 0 } mysql_check() { # this should return: # - 0 to enable the chart # - 1 to disable the chart local x m mysql_cmd [ -z "${mysql_cmd}" ] && mysql_cmd="$(which mysql)" if [ ${#mysql_opts[@]} -eq 0 ] then mysql_cmds[local]="$mysql_cmd" mysql_opts[local]= fi # check once if the url works for m in "${!mysql_opts[@]}" do [ -z "${mysql_cmds[$m]}" ] && mysql_cmds[$m]="$mysql_cmd" if [ -z "${mysql_cmds[$m]}" ] then echo >&2 "$PROGRAM_NAME: mysql: cannot get mysql command for '$m'. Please set mysql_cmds[$m]='/path/to/mysql', in $confd/mysql.conf" fi mysql_get "${mysql_cmds[$m]}" ${mysql_opts[$m]} if [ ! $? -eq 0 ] then echo >&2 "$PROGRAM_NAME: mysql: cannot get global status for '$m'. Please set mysql_opts[$m]='options' to whatever needed to get connected to the mysql server, in $confd/mysql.conf" unset mysql_cmds[$m] unset mysql_opts[$m] unset mysql_ids[$m] continue fi mysql_ids[$m]="$( fixid "$m" )" done if [ ${#mysql_opts[@]} -eq 0 ] then echo >&2 "$PROGRAM_NAME: mysql: no mysql servers found. Please set mysql_opts[name]='options' to whatever needed to get connected to the mysql server, in $confd/mysql.conf" return 1 fi return 0 } mysql_create() { local m # create the charts for m in "${mysql_ids[@]}" do cat <<EOF CHART mysql_$m.net '' "mysql Bandwidth" "kilobits/s" bandwidth mysql.net area $[mysql_priority + 1] $mysql_update_every DIMENSION Bytes_received in incremental 8 1024 DIMENSION Bytes_sent out incremental -8 1024 CHART mysql_$m.queries '' "mysql Queries" "queries/s" queries mysql.queries line $[mysql_priority + 2] $mysql_update_every DIMENSION Queries queries incremental 1 1 DIMENSION Questions questions incremental 1 1 DIMENSION Slow_queries slow_queries incremental -1 1 CHART mysql_$m.handlers '' "mysql Handlers" "handlers/s" handlers mysql.handlers line $[mysql_priority + 3] $mysql_update_every DIMENSION Handler_commit commit incremental 1 1 DIMENSION Handler_delete delete incremental 1 1 DIMENSION Handler_prepare prepare incremental 1 1 DIMENSION Handler_read_first read_first incremental 1 1 DIMENSION Handler_read_key read_key incremental 1 1 DIMENSION Handler_read_next read_next incremental 1 1 DIMENSION Handler_read_prev read_prev incremental 1 1 DIMENSION Handler_read_rnd read_rnd incremental 1 1 DIMENSION Handler_read_rnd_next read_rnd_next incremental 1 1 DIMENSION Handler_rollback rollback incremental 1 1 DIMENSION Handler_savepoint savepoint incremental 1 1 DIMENSION Handler_savepoint_rollback savepoint_rollback incremental 1 1 DIMENSION Handler_update update incremental 1 1 DIMENSION Handler_write write incremental 1 1 CHART mysql_$m.table_locks '' "mysql Tables Locks" "locks/s" locks mysql.table_locks line $[mysql_priority + 4] $mysql_update_every DIMENSION Table_locks_immediate immediate incremental 1 1 DIMENSION Table_locks_waited waited incremental -1 1 CHART mysql_$m.join_issues '' "mysql Select Join Issues" "joins/s" issues mysql.join_issues line $[mysql_priority + 5] $mysql_update_every DIMENSION Select_full_join full_join incremental 1 1 DIMENSION Select_full_range_join full_range_join incremental 1 1 DIMENSION Select_range range incremental 1 1 DIMENSION Select_range_check range_check incremental 1 1 DIMENSION Select_scan scan incremental 1 1 CHART mysql_$m.sort_issues '' "mysql Sort Issues" "issues/s" issues mysql.sort.issues line $[mysql_priority + 6] $mysql_update_every DIMENSION Sort_merge_passes merge_passes incremental 1 1 DIMENSION Sort_range range incremental 1 1 DIMENSION Sort_scan scan incremental 1 1 CHART mysql_$m.tmp '' "mysql Tmp Operations" "counter" temporaries mysql.tmp line $[mysql_priority + 7] $mysql_update_every DIMENSION Created_tmp_disk_tables disk_tables incremental 1 1 DIMENSION Created_tmp_files files incremental 1 1 DIMENSION Created_tmp_tables tables incremental 1 1 CHART mysql_$m.connections '' "mysql Connections" "connections/s" connections mysql.connections line $[mysql_priority + 8] $mysql_update_every DIMENSION Connections all incremental 1 1 DIMENSION Aborted_connects aborded incremental 1 1 CHART mysql_$m.binlog_cache '' "mysql Binlog Cache" "transactions/s" binlog mysql.binlog_cache line $[mysql_priority + 9] $mysql_update_every DIMENSION Binlog_cache_disk_use disk incremental 1 1 DIMENSION Binlog_cache_use all incremental 1 1 CHART mysql_$m.threads '' "mysql Threads" "threads" threads mysql.threads line $[mysql_priority + 10] $mysql_update_every DIMENSION Threads_connected connected absolute 1 1 DIMENSION Threads_created created incremental 1 1 DIMENSION Threads_cached cached absolute -1 1 DIMENSION Threads_running running absolute 1 1 CHART mysql_$m.thread_cache_misses '' "mysql Threads Cache Misses" "misses" threads mysql.thread_cache_misses area $[mysql_priority + 11] $mysql_update_every DIMENSION misses misses absolute 1 100 CHART mysql_$m.innodb_io '' "mysql InnoDB I/O Bandwidth" "kilobytes/s" innodb mysql.innodb_io area $[mysql_priority + 12] $mysql_update_every DIMENSION Innodb_data_read read incremental 1 1024 DIMENSION Innodb_data_written write incremental -1 1024 CHART mysql_$m.innodb_io_ops '' "mysql InnoDB I/O Operations" "operations/s" innodb mysql.innodb_io_ops line $[mysql_priority + 13] $mysql_update_every DIMENSION Innodb_data_reads reads incremental 1 1 DIMENSION Innodb_data_writes writes incremental -1 1 DIMENSION Innodb_data_fsyncs fsyncs incremental 1 1 CHART mysql_$m.innodb_io_pending_ops '' "mysql InnoDB Pending I/O Operations" "operations" innodb mysql.innodb_io_pending_ops line $[mysql_priority + 14] $mysql_update_every DIMENSION Innodb_data_pending_reads reads absolute 1 1 DIMENSION Innodb_data_pending_writes writes absolute -1 1 DIMENSION Innodb_data_pending_fsyncs fsyncs absolute 1 1 CHART mysql_$m.innodb_log '' "mysql InnoDB Log Operations" "operations/s" innodb mysql.innodb_log line $[mysql_priority + 15] $mysql_update_every DIMENSION Innodb_log_waits waits incremental 1 1 DIMENSION Innodb_log_write_requests write_requests incremental -1 1 DIMENSION Innodb_log_writes writes incremental -1 1 CHART mysql_$m.innodb_os_log '' "mysql InnoDB OS Log Operations" "operations" innodb mysql.innodb_os_log line $[mysql_priority + 16] $mysql_update_every DIMENSION Innodb_os_log_fsyncs fsyncs incremental 1 1 DIMENSION Innodb_os_log_pending_fsyncs pending_fsyncs absolute 1 1 DIMENSION Innodb_os_log_pending_writes pending_writes absolute -1 1 CHART mysql_$m.innodb_os_log_io '' "mysql InnoDB OS Log Bandwidth" "kilobytes/s" innodb mysql.innodb_os_log_io area $[mysql_priority + 17] $mysql_update_every DIMENSION Innodb_os_log_written write incremental -1 1024 CHART mysql_$m.innodb_cur_row_lock '' "mysql InnoDB Current Row Locks" "operations" innodb mysql.innodb_cur_row_lock area $[mysql_priority + 18] $mysql_update_every DIMENSION Innodb_row_lock_current_waits current_waits absolute 1 1 CHART mysql_$m.innodb_rows '' "mysql InnoDB Row Operations" "operations/s" innodb mysql.innodb_rows area $[mysql_priority + 19] $mysql_update_every DIMENSION Innodb_rows_read read incremental 1 1 DIMENSION Innodb_rows_deleted deleted incremental -1 1 DIMENSION Innodb_rows_inserted inserted incremental 1 1 DIMENSION Innodb_rows_updated updated incremental -1 1 EOF if [ ! -z "$mysql_Binlog_stmt_cache_disk_use" ] then cat <<EOF CHART mysql_$m.binlog_stmt_cache '' "mysql Binlog Statement Cache" "statements/s" binlog mysql.binlog_stmt_cache line $[mysql_priority + 20] $mysql_update_every DIMENSION Binlog_stmt_cache_disk_use disk incremental 1 1 DIMENSION Binlog_stmt_cache_use all incremental 1 1 EOF fi if [ ! -z "$mysql_Connection_errors_accept" ] then cat <<EOF CHART mysql_$m.connection_errors '' "mysql Connection Errors" "connections/s" connections mysql.connection_errors line $[mysql_priority + 21] $mysql_update_every DIMENSION Connection_errors_accept accept incremental 1 1 DIMENSION Connection_errors_internal internal incremental 1 1 DIMENSION Connection_errors_max_connections max incremental 1 1 DIMENSION Connection_errors_peer_addr peer_addr incremental 1 1 DIMENSION Connection_errors_select select incremental 1 1 DIMENSION Connection_errors_tcpwrap tcpwrap incremental 1 1 EOF fi done return 0 } mysql_update() { # the first argument to this function is the microseconds since last update # pass this parameter to the BEGIN statement (see bellow). # do all the work to collect / calculate the values # for each dimension # remember: KEEP IT SIMPLE AND SHORT # 1. get the counters page from mysql # 2. sed to remove spaces; replace . with _; remove spaces around =; prepend each line with: local mysql_ # 3. egrep lines starting with: # local mysql_client_http_ then one or more of these a-z 0-9 _ then = and one of more of 0-9 # local mysql_server_all_ then one or more of these a-z 0-9 _ then = and one of more of 0-9 # 4. then execute this as a script with the eval # # be very carefull with eval: # prepare the script and always grep at the end the lines that are usefull, so that # even if something goes wrong, no other code can be executed local m x for m in "${!mysql_ids[@]}" do x="${mysql_ids[$m]}" mysql_get "${mysql_cmds[$m]}" ${mysql_opts[$m]} if [ $? -ne 0 ] then unset mysql_ids[$m] unset mysql_opts[$m] unset mysql_cmds[$m] echo >&2 "$PROGRAM_NAME: mysql: failed to get values for '$m', disabling it." continue fi # write the result of the work. cat <<VALUESEOF BEGIN mysql_$x.net $1 SET Bytes_received = $mysql_Bytes_received SET Bytes_sent = $mysql_Bytes_sent END BEGIN mysql_$x.queries $1 SET Queries = $mysql_Queries SET Questions = $mysql_Questions SET Slow_queries = $mysql_Slow_queries END BEGIN mysql_$x.handlers $1 SET Handler_commit = $mysql_Handler_commit SET Handler_delete = $mysql_Handler_delete SET Handler_prepare = $mysql_Handler_prepare SET Handler_read_first = $mysql_Handler_read_first SET Handler_read_key = $mysql_Handler_read_key SET Handler_read_next = $mysql_Handler_read_next SET Handler_read_prev = $mysql_Handler_read_prev SET Handler_read_rnd = $mysql_Handler_read_rnd SET Handler_read_rnd_next = $mysql_Handler_read_rnd_next SET Handler_rollback = $mysql_Handler_rollback SET Handler_savepoint = $mysql_Handler_savepoint SET Handler_savepoint_rollback = $mysql_Handler_savepoint_rollback SET Handler_update = $mysql_Handler_update SET Handler_write = $mysql_Handler_write END BEGIN mysql_$x.table_locks $1 SET Table_locks_immediate = $mysql_Table_locks_immediate SET Table_locks_waited = $mysql_Table_locks_waited END BEGIN mysql_$x.join_issues $1 SET Select_full_join = $mysql_Select_full_join SET Select_full_range_join = $mysql_Select_full_range_join SET Select_range = $mysql_Select_range SET Select_range_check = $mysql_Select_range_check SET Select_scan = $mysql_Select_scan END BEGIN mysql_$x.sort_issues $1 SET Sort_merge_passes = $mysql_Sort_merge_passes SET Sort_range = $mysql_Sort_range SET Sort_scan = $mysql_Sort_scan END BEGIN mysql_$m.tmp $1 SET Created_tmp_disk_tables = $mysql_Created_tmp_disk_tables SET Created_tmp_files = $mysql_Created_tmp_files SET Created_tmp_tables = $mysql_Created_tmp_tables END BEGIN mysql_$m.connections $1 SET Connections = $mysql_Connections SET Aborted_connects = $mysql_Aborted_connects END BEGIN mysql_$m.binlog_cache $1 SET Binlog_cache_disk_use = $mysql_Binlog_cache_disk_use SET Binlog_cache_use = $mysql_Binlog_cache_use END BEGIN mysql_$m.threads $1 SET Threads_connected = $mysql_Threads_connected SET Threads_created = $mysql_Threads_created SET Threads_cached = $mysql_Threads_cached SET Threads_running = $mysql_Threads_running END BEGIN mysql_$m.thread_cache_misses $1 SET misses = $mysql_Thread_cache_misses END BEGIN mysql_$m.innodb_io $1 SET Innodb_data_read = $mysql_Innodb_data_read SET Innodb_data_written = $mysql_Innodb_data_written END BEGIN mysql_$m.innodb_io_ops $1 SET Innodb_data_reads = $mysql_Innodb_data_reads SET Innodb_data_writes = $mysql_Innodb_data_writes SET Innodb_data_fsyncs = $mysql_Innodb_data_fsyncs END BEGIN mysql_$m.innodb_io_pending_ops $1 SET Innodb_data_pending_reads = $mysql_Innodb_data_pending_reads SET Innodb_data_pending_writes = $mysql_Innodb_data_pending_writes SET Innodb_data_pending_fsyncs = $mysql_Innodb_data_pending_fsyncs END BEGIN mysql_$m.innodb_log $1 SET Innodb_log_waits = $mysql_Innodb_log_waits SET Innodb_log_write_requests = $mysql_Innodb_log_write_requests SET Innodb_log_writes = $mysql_Innodb_log_writes END BEGIN mysql_$m.innodb_os_log $1 SET Innodb_os_log_fsyncs = $mysql_Innodb_os_log_fsyncs SET Innodb_os_log_pending_fsyncs = $mysql_Innodb_os_log_pending_fsyncs SET Innodb_os_log_pending_writes = $mysql_Innodb_os_log_pending_writes END BEGIN mysql_$m.innodb_os_log_io $1 SET Innodb_os_log_written = $mysql_Innodb_os_log_written END BEGIN mysql_$m.innodb_cur_row_lock $1 SET Innodb_row_lock_current_waits = $mysql_Innodb_row_lock_current_waits END BEGIN mysql_$m.innodb_rows $1 SET Innodb_rows_inserted = $mysql_Innodb_rows_inserted SET Innodb_rows_read = $mysql_Innodb_rows_read SET Innodb_rows_updated = $mysql_Innodb_rows_updated SET Innodb_rows_deleted = $mysql_Innodb_rows_deleted END VALUESEOF if [ ! -z "$mysql_Binlog_stmt_cache_disk_use" ] then cat <<VALUESEOF BEGIN mysql_$m.binlog_stmt_cache $1 SET Binlog_stmt_cache_disk_use = $mysql_Binlog_stmt_cache_disk_use SET Binlog_stmt_cache_use = $mysql_Binlog_stmt_cache_use END VALUESEOF fi if [ ! -z "$mysql_Connection_errors_accept" ] then cat <<VALUESEOF BEGIN mysql_$m.connection_errors $1 SET Connection_errors_accept = $mysql_Connection_errors_accept SET Connection_errors_internal = $mysql_Connection_errors_internal SET Connection_errors_max_connections = $mysql_Connection_errors_max_connections SET Connection_errors_peer_addr = $mysql_Connection_errors_peer_addr SET Connection_errors_select = $mysql_Connection_errors_select SET Connection_errors_tcpwrap = $mysql_Connection_errors_tcpwrap END VALUESEOF fi done [ ${#mysql_ids[@]} -eq 0 ] && echo >&2 "$PROGRAM_NAME: mysql: no mysql servers left active." && return 1 return 0 }