1、下载mysql监控脚本: [root@node1 app]# wget http://www.javabloger.com/att/gmetric-mysql.sh
2、修改脚本中的msyql用户名和密码
3、该脚本54和58号行机器不同需要进行修改(未查明原因),可以在$[ ]和$(())间替换。 我的修改成DELTA_VALUE=$[ NEW_VALUE-PREVIOUS_VALUE ]、DELTA_TIMESTAMP=$[ NEW_TIMESTAMP-PREVIOUS_TIMESTAMP ]就好了。去掉了[]中的$
4、在crond执行该脚本
5、重启gmetad
附gmetric-mysql.sh [root@node1 192.168.228.156]# cat /etc/ganglia/gmetric-mysql.sh #! /bin/bash # # Get statistics from MySQL and feed them into Ganglia for monitoring. # # To use, simply adjust the path to gmetric and mysql credentials as appropriate. # # Author: David Winterbottom (david.winterbottom@gmail.com) # Site: http://codeinthehole.com # Config declare -r GMETRIC=/usr/bin/gmetric declare -r NEW_DATA_FILE=/tmp/mysql-stats.new declare -r OLD_DATA_FILE=/tmp/mysql-stats.old declare -r MYSQL_USER="root" declare -r MYSQL_PASSWORD="123456" # Sanity checks if test -z "$GMETRIC" ; then printf "The command $GMETRIC is not available"; exit 192 fi # Function for submiting metrics function record_value { if [ $# -lt 1 ]; then printf "You must specify a look-up value\n" exit 192 fi LOOKUP_VAR=$1 GANGLIA_NAME=${2-unspecified} GANGLIA_TYPE=${3-float} GANGLIA_UNITS=${4-units} GANGLIA_VALUE=`grep "$LOOKUP_VAR[^_]" "$NEW_DATA_FILE" | awk '{print $2}'` printf " * $GANGLIA_NAME: $GANGLIA_VALUE\n" $GMETRIC --type "$GANGLIA_TYPE" --name "$GANGLIA_NAME" --value $GANGLIA_VALUE --unit "$GANGLIA_UNITS" } # Function for submitting delta metrics function record_value_rate { if [ $# -lt 1 ]; then printf "You must specify a look-up value\n" exit 192 fi MYSQL_VAR=$1 GANGLIA_NAME=${2-unspecified} GANGLIA_TYPE=${3-float} GANGLIA_UNITS=${4-"per second"} # Get values from old and new files PREVIOUS_VALUE=`grep "$MYSQL_VAR[^_]" "$OLD_DATA_FILE" | awk '{print $2}'` NEW_VALUE=`grep "$MYSQL_VAR[^_]" "$NEW_DATA_FILE" | awk '{print $2}'` # DELTA_VALUE=$[ $NEW_VALUE-$PREVIOUS_VALUE ] DELTA_VALUE=$[ NEW_VALUE-PREVIOUS_VALUE ] # DELTA_TIMESTAMP=$[ NEW_TIMESTAMP-PREVIOUS_TIMESTAMP ] PREVIOUS_TIMESTAMP=`date -r "$OLD_DATA_FILE" +%s` NEW_TIMESTAMP=`date -r "$NEW_DATA_FILE" +%s` # DELTA_TIMESTAMP=$[ $NEW_TIMESTAMP-$PREVIOUS_TIMESTAMP ] DELTA_TIMESTAMP=$[ NEW_TIMESTAMP-PREVIOUS_TIMESTAMP ] if [ $DELTA_VALUE -lt 0 ] || [ $DELTA_TIMESTAMP -lt 0 ]; then # Something strange here - MYSQL may just have started. Ignore for now printf "Weird data value - skipping\n" else # Need to pipe to bc to perform floating point operations DELTA_RATE=`echo "scale=4; $DELTA_VALUE/$DELTA_TIMESTAMP" | bc -l` printf " * $GANGLIA_NAME -- Previous value: $PREVIOUS_VALUE, new value: $NEW_VALUE, delta: $DELTA_VALUE, previous timestamp: $PREVIOUS_TIMESTAMP, new timestamp: $NEW_TIMESTAMP, delta: $DELTA_TIMESTAMP, $DELTA_RATE per second\n" $GMETRIC --type "$GANGLIA_TYPE" --name "$GANGLIA_NAME" --value $DELTA_VALUE --unit "$GANGLIA_UNITS" fi } # Read MySQL statistics into a temporary file mysql --user=$MYSQL_USER --password=$MYSQL_PASSWORD --execute "SHOW GLOBAL STATUS" > "$NEW_DATA_FILE" # Submit metrics record_value_rate "Connections" "MYSQL_CONNECTIONS" "float" "Connections/sec" record_value_rate "Com_update" "MYSQL_UPDATE_QUERIES" "float" "Queries/sec" record_value_rate "Com_select" "MYSQL_SELECT_QUERIES" "float" "Queries/sec" record_value_rate "Com_insert" "MYSQL_INSERT_QUERIES" "float" "Queries/sec" record_value_rate "Com_delete" "MYSQL_DELETE_QUERIES" "float" "Queries/sec" record_value_rate "Created_tmp_tables" "MYSQL_CREATED_TMP_TABLES" "float" "Tables created/sec" record_value_rate "Slow_queries" "MYSQL_SLOW_QUERIES" "float" "Queries/sec" record_value_rate "Qcache_hits" "MYSQL_QUERY_CACHE_HITS" "float" "Hits/sec" record_value "Qcache_queries_in_cache" "MYSQL_QUERIES_IN_CACHE" "float" "Queries" record_value_rate "Questions" "MYSQL_QUESTIONS" "float" "Questions/sec" record_value_rate "Threads_connected" "MYSQL_THREADS_CONNECTED" "float" "Threads connected/sec" record_value "Threads_running" "MYSQL_THREADS_RUNNING" "float" "Threads running" # Copy data cp "$NEW_DATA_FILE" "$OLD_DATA_FILE"
6、监控效果: