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authorHolger Levsen <holger@layer-acht.org>2017-03-15 16:32:39 +0100
committerHolger Levsen <holger@layer-acht.org>2017-03-15 16:32:39 +0100
commit9001800398ddb91faaf644141b83b2059e7d4bbe (patch)
treee7837bc8ec4ceae245d32298b8cedb2154a378dc
parentd4663d07098d0bf105b2d5bf73488a4c3a2d1774 (diff)
downloadjenkins.debian.net-9001800398ddb91faaf644141b83b2059e7d4bbe.tar.xz
add new munin plugin, jenkins_jstat, to monitor 'jstat -gc' output for jenkins.war JVM
Signed-off-by: Holger Levsen <holger@layer-acht.org>
-rw-r--r--hosts/jenkins/etc/munin/plugin-conf.d/jenkins_jstats3
-rwxr-xr-xhosts/jenkins/etc/munin/plugins/jenkins_jstats84
2 files changed, 87 insertions, 0 deletions
diff --git a/hosts/jenkins/etc/munin/plugin-conf.d/jenkins_jstats b/hosts/jenkins/etc/munin/plugin-conf.d/jenkins_jstats
new file mode 100644
index 00000000..582c0960
--- /dev/null
+++ b/hosts/jenkins/etc/munin/plugin-conf.d/jenkins_jstats
@@ -0,0 +1,3 @@
+[jenkins_jstats]
+user root
+group root
diff --git a/hosts/jenkins/etc/munin/plugins/jenkins_jstats b/hosts/jenkins/etc/munin/plugins/jenkins_jstats
new file mode 100755
index 00000000..6e006b0d
--- /dev/null
+++ b/hosts/jenkins/etc/munin/plugins/jenkins_jstats
@@ -0,0 +1,84 @@
+#!/bin/sh
+# -*- sh -*-
+
+: << =cut
+
+=head1 NAME
+
+jenkins_jstats - Plugin to measure jstat from jenkins.war
+
+=head1 AUTHOR
+
+Contributed by Holger Levsen
+
+=head1 LICENSE
+
+GPLv2
+
+=head1 MAGIC MARKERS
+
+ #%# family=auto
+ #%# capabilities=autoconf
+
+=cut
+
+. $MUNIN_LIBDIR/plugins/plugin.sh
+
+if [ "$1" = "autoconf" ]; then
+ echo yes
+ exit 0
+fi
+
+STATEFILE=$MUNIN_PLUGSTATE/$(basename $0)
+
+# delete statefile if it's older than ${jenkins_update_interval} set in /etc/munin/plugin-conf.d/jenkins
+if test $(find $STATEFILE -mmin +${jenkins_update_interval} 2>/dev/null) ; then
+ rm -f $STATEFILE
+fi
+
+if [ -f $STATEFILE ] && [ "$1" = "" ] ; then
+ cat $STATEFILE
+ exit 0
+fi
+
+JENKINS_PID=$(jps |grep jenkins.war|cut -d "j" -f1)
+JOB_PREFIXES=$(for i in $(jstat -gc $JENKINS_PID | head -1) ; do echo -n "$i " ; done)
+if [ "$1" = "config" ]; then
+ echo 'graph_title jenkins.war jstat -gc (mostly KB shown)'
+ echo 'graph_args --base 1000 -l 0 '
+ echo 'graph_scale no'
+ echo 'graph_vlabel jenkins.war jstat -gc'
+ echo 'graph_category jenkins'
+ draw=AREA
+ for PREFIX in $JOB_PREFIXES ; do
+ echo "jenkins_jstats_$PREFIX.label $PREFIX"
+ case $PREFIX in
+ S0C) INFO="Current survivor space 0 capacity (KB)" ;;
+ S1C) INFO="Current survivor space 1 capacity (KB)" ;;
+ S0U) INFO="Survivor space 0 utilization (KB)" ;;
+ S1U) INFO="Survivor space 1 utilization (KB)" ;;
+ EC) INFO="Current eden space capacity (KB)" ;;
+ EU) INFO="Eden space utilization (KB)" ;;
+ OC) INFO="Current old space capacity (KB)" ;;
+ OU) INFO="Old space utilization (KB)" ;;
+ PC) INFO="Current permanent space capacity (KB)" ;;
+ PU) INFO="Permanent space utilization (KB)" ;;
+ YGC) INFO="Number of young generation GC Events" ;;
+ YGCT) INFO="Young generation garbage collection time" ;;
+ FGC) INFO="Number of full GC events" ;;
+ FGCT) INFO="Full garbage collection time" ;;
+ GCT) INFO="Total garbage collection time" ;;
+ *) ;;
+ esac
+ echo "jenkins_jstats_$PREFIX.info $INFO"
+ done
+ exit 0
+fi
+
+COUNTER=1
+VALUES=$(jstat -gc $JENKINS_PID | tail -1)
+for PREFIX in $JOB_PREFIXES ; do
+ NR=$( (for i in $VALUES ; do echo $i ; done ) | head -$COUNTER | tail -1)
+ echo "jenkins_jstats_$PREFIX.value $NR" | tee -a $STATEFILE
+ COUNTER=$((COUNTER+1))
+done