Initial version
This commit is contained in:
Kosuke Uchida
Steve Schnepp
parent
9d4c6ab7ca
commit
38d9e89d30
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#!/bin/bash
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#
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# Plugin for monitor JVM activity - GC Count -
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#
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# Usage:
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#
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# Symlink into /etc/munin/plugins/ and add the monitored
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# alias name like :
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#
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# ln -s /usr/share/munin/plugins/jstat__gccount \
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# /etc/munin/plugins/jstat_<jvm alias>_gccount
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# This should, however, be given through autoconf and suggest.
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#
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# Requirements:
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#
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# You need to execute your Java program under jsvc provided by
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# http://jakarta.apache.org/commons/daemon/
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# which enables you to run your Java program with specified
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# pid file with -pidfile option.
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# A Brief setup documentation is also available at
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# http://tomcat.apache.org/tomcat-5.5-doc/setup.html
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#
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# Target:
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#
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# Target Java Virtual Machine to monitor are:
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# Sun JDK 5.0 (http://java.sun.com/javase/) (default)
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# BEA JRockit 5.0 (http://dev2dev.bea.com/jrockit/)
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#
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# Parameters:
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#
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# config (required)
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#
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# Config variables:
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#
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# pidfilepath - Which file path use. Defaults to '/var/run/jsvc.pid'
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# javahome - Defaults to '/usr/local/java/jdk'
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#
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DefaultPidFile="/var/run/jsvc.pid"
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DefaultJavaHome="/usr/local/java/jdk"
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#
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# Environment Variables
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#
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if [ -z "${pidfilepath}" ]; then
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pidfilepath="${DefaultPidFile}"
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fi
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if [ -z "${graphtitle}" ]; then
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graphtitle="${pidfilepath}"
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fi
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if [ -z "${javahome}" ]; then
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JAVA_HOME="${DefaultJavaHome}"
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else
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JAVA_HOME="${javahome}"
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fi
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export JAVA_HOME
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#
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# Functions
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#
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chk_jdk()
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{
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isJRockit=`${JAVA_HOME}/bin/java -version 2>&1 | egrep -i 'jrockit'`
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if [ -n "${isJRockit}" ]; then
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JDK_TYPE="bea"
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else
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JDK_TYPE="sun"
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fi
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}
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chk_version()
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{
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Version=`${JAVA_HOME}/bin/java -version 2>&1 | egrep '^java version' | awk '{print $3}' | sed -e 's/\"//g' | cut -d'_' -f 1`
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if [ "${Version}" != "1.5.0" ]; then
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return 1
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else
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return 0
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fi
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}
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config_common()
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{
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echo 'graph_title GC Count' $graphtitle
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echo 'graph_args -l 0'
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echo 'graph_vlabel GC Count(times)'
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echo 'graph_total total'
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echo 'graph_info GC Count'
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echo 'graph_category JVM'
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}
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config_sun_jdk()
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{
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config_common
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echo 'Young_GC.label Young_GC'
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echo 'Young_GC.min 0'
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echo 'Full_GC.label Full_GC'
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echo 'Full_GC.min 0'
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}
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config_bea_jdk()
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{
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config_common
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echo 'Young_GC.label Young_GC'
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echo 'Young_GC.min 0'
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echo 'Old_GC.label Old_GC'
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echo 'Old_GC.min 0'
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}
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print_sun_stats()
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{
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${JAVA_HOME}/bin/jstat -gc ${PidNum} | tail -1 | awk \
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'{\
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S0C = $1; \
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S1C = $2; \
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S0U = $3; \
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S1U = $4; \
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EC = $5; \
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EU = $6; \
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OC = $7; \
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OU = $8; \
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PC = $9; \
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PU = $10; \
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YGC = $11; \
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YGCT = $12; \
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FGC = $13; \
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FGCT = $14; \
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GCT = $15; \
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\
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S0F = S0C - S0U; \
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S1F = S1C - S1U; \
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EF = EC - EU; \
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OF = OC - OU; \
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PF = PC - PU; \
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\
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print "Young_GC.value " YGC; \
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print "Full_GC.value " FGC; \
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}'
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}
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print_bea_stats()
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{
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${JAVA_HOME}/bin/jstat -gc ${PidNum} | tail -1 | awk \
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'{\
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HeapSize = $1; \
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NurserySize = $2; \
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UsedHeapSize = $3; \
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YC = $4; \
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OC = $5; \
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YCTime = $6; \
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OCTime = $7; \
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GCTime = $8; \
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YCPauseTime = $9; \
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OCPauseTime = $10; \
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PauseTime = $11; \
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Finalizers = $12; \
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\
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print "Young_GC.value " YC; \
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print "Old_GC.value " OC;\
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}'
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}
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#
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# common for all argument
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#
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chk_jdk
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#
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# autoconf
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#
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if [ "$1" = "autoconf" ]; then
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if [ ! -x "${JAVA_HOME}/bin/jstat" ]; then
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echo "no (No jstat found in ${JAVA_HOME}/bin)"
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exit 1
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fi
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chk_version
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if [ $? != 0 ]; then
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echo "no (Java version is invalid)"
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exit 1
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fi
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if [ ! -f "${pidfilepath}" -o ! -r "${pidfilepath}" ]; then
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echo "no (No such file ${pidfilepath} or cannot read ${pidfilepath}"
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exit 1
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fi
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echo "yes"
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exit 0
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fi
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#
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# config
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#
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if [ "$1" = "config" ]; then
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if [ "${JDK_TYPE}" == "bea" ]; then
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config_bea_jdk
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else
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config_sun_jdk
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fi
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exit 0
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fi
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#
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# Main
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#
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PidNum=`cat ${pidfilepath}`
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if [ "${JDK_TYPE}" == "bea" ]; then
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print_bea_stats
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else
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print_sun_stats
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fi
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