I was stuck with somehow the same issue. What i did to get something working a little bit better but still not perfectly.
I'm on RHEL :
[root@bus|in plugins]# cat /etc/munin/plugin-conf.d/munin-node
[diskstats]
user munin
[iostat_ios]
user munin
[jmx_*]
env.ip 192.168.1.101
env.port 5054 <- being the port configured for your jmx
then
[root@bus|in plugins]# ls -l /etc/munin/plugins/jmx_MultigraphAll
lrwxrwxrwx 1 root root 29 14 mars 15:36 /etc/munin/plugins/jmx_MultigraphAll -> /usr/share/munin/plugins/jmx_
and I modified the /usr/share/munin/plugins/jmx_ with the following :
#!/bin/sh
# -*- sh -*-
: << =cut
=head1 NAME
jmx_ - Wildcard plugin to monitor Java application servers via JMX
=head1 APPLICABLE SYSTEMS
Tested with Tomcat 4.1/5.0/5.5/6.0 on Sun JVM 5/6 and OpenJDK.
Any JVM that supports JMX should in theory do.
Needs nc in path for autoconf.
=head1 CONFIGURATION
[jmx_*]
env.ip 127.0.0.1
env.port 5400
env.category jvm
env.username monitorRole
env.password SomethingSecret
env.JRE_HOME /usr/lib/jvm/java-6-sun/jre
env.JAVA_OPTS -Xmx128m
Needed configuration on the Tomcat side: add
-Dcom.sun.management.jmxremote \
-Dcom.sun.management.jmxremote.port=5400 \
-Dcom.sun.management.jmxremote.ssl=false \
-Dcom.sun.management.jmxremote.authenticate=false
to CATALINA_OPTS in your startup scripts.
Replace authenticate=false with
-Dcom.sun.management.jmxremote.password.file=/etc/tomcat/jmxremote.password \
-Dcom.sun.management.jmxremote.access.file=/etc/tomcat/jmxremote.access
...if you want authentication.
jmxremote.password:
monitorRole SomethingSecret
jmxremote.access:
monitorRole readonly
You may need higher access levels for some counters, notably ThreadsDeadlocked.
=head1 BUGS
No encryption supported in the JMX connection.
The plugins available reflect the most interesting aspects of a
JVM runtime. This should be extended to cover things specific to
Tomcat, JBoss, Glassfish and so on. Patches welcome.
=head1 AUTHORS
=encoding UTF-8
Mo Amini, Diyar Amin and Younes Hajji, Høgskolen i Oslo/Oslo
University College.
Shell script wrapper and integration by Erik Inge Bolsø, Redpill
Linpro AS.
Previous work on JMX plugin by Aleksey Studnev. Support for
authentication added by Ingvar Hagelund, Redpill Linpro AS.
=head1 LICENSE
GPLv2
=head1 MAGIC MARKERS
#%# family=auto
#%# capabilities=autoconf suggest
=cut
MUNIN_JAR="/usr/share/java/munin-jmx-plugins.jar"
if [ "x$JRE_HOME" != "x" ] ; then
JRE=$JRE_HOME/bin/java
export JRE_HOME=$JRE_HOME
fi
JAVA_BIN=${JRE:-/opt/jdk/jre/bin/java}
ip=${ip:-192.168.1.101}
port=${port:-5054}
if [ "x$1" = "xsuggest" ] ; then
echo MultigraphAll
exit 0
fi
if [ "x$1" = "xautoconf" ] ; then
NC=`which nc 2>/dev/null`
if [ "x$NC" = "x" ] ; then
echo "no (nc not found)"
exit 0
fi
$NC -n -z $ip $port >/dev/null 2>&1
CONNECT=$?
$JAVA_BIN -? >/dev/null 2>&1
JAVA=$?
if [ $JAVA -ne 0 ] ; then
echo "no (java runtime not found at $JAVA_BIN)"
exit 0
fi
if [ ! -e $MUNIN_JAR ] ; then
echo "no (munin jmx classes not found at $MUNIN_JAR)"
exit 0
fi
if [ $CONNECT -eq 0 ] ; then
echo "yes"
exit 0
else
echo "no (connection to $ip:$port failed)"
exit 0
fi
fi
if [ "x$1" = "xconfig" ] ; then
param=config
else
param=Tomcat
fi
scriptname=${0##*/}
jmxfunc=${scriptname##*_}
prefix=${scriptname%_*}
if [ "x$jmxfunc" = "x" ] ; then
echo "error, plugin must be symlinked in order to run"
exit 1
fi
ip=$ip port=$port $JAVA_BIN -cp $MUNIN_JAR $JAVA_OPTS org.munin.plugin.jmx.$jmxfunc $param $prefix
And you have to add the right permissions and owner:group on what you define as the JRE, for example here :
[root@bus|in plugins]# ls -ld /opt/jdk
drwxrwxr-x 8 nobody nobody 4096 8 oct. 15:03 /opt/jdk
Now I can run (and I can see it's using nobody:nobody as user:group, maybe something to play with in the conf) :
[root@bus|in plugins]# munin-run jmx_MultigraphAll -d
# Processing plugin configuration from /etc/munin/plugin-conf.d/df
# Processing plugin configuration from /etc/munin/plugin-conf.d/fw_
# Processing plugin configuration from /etc/munin/plugin-conf.d/hddtemp_smartctl
# Processing plugin configuration from /etc/munin/plugin-conf.d/munin-node
# Processing plugin configuration from /etc/munin/plugin-conf.d/postfix
# Processing plugin configuration from /etc/munin/plugin-conf.d/sendmail
# Setting /rgid/ruid/ to /99/99/
# Setting /egid/euid/ to /99 99/99/
# Setting up environment
# Environment ip = 192.168.1.101
# Environment port = 5054
# About to run '/etc/munin/plugins/jmx_MultigraphAll'
multigraph jmx_memory
Max.value 2162032640
Committed.value 1584332800
Init.value 1613168640
Used.value 473134248
multigraph jmx_MemoryAllocatedHeap
Max.value 1037959168
Committed.value 1037959168
Init.value 1073741824
Used.value 275414584
multigraph jmx_MemoryAllocatedNonHeap
Max.value 1124073472
Committed.value 546373632
Init.value 539426816
Used.value 197986088
[...]
multigraph jmx_ProcessorsAvailable
ProcessorsAvailable.value 1
Now I'm trying to get it to work for different JVMs on the same host, because this is for a single one. I hope that can help you.
edit : actually I did the modifications to use with several java processes having their own jmx ports.
What you have to add them there :
[root@bus|in plugins]# cat /etc/munin/plugin-conf.d/munin-node
[diskstats]
user munin
[iostat_ios]
user munin
[admin_jmx_*]
env.ip 192.168.1.101
env.port 5054
[managed_jmx_*]
env.ip 192.168.1.101
env.port 5055
[jboss_jmx_*]
env.ip 192.168.1.101
env.port 1616
and then create the links :
[root@bus|in plugins]# ls -l /etc/munin/plugins/*_jmx_*
lrwxrwxrwx 1 root root 29 14 mars 15:36 /etc/munin/plugins/admin_jmx_MultigraphAll -> /usr/share/munin/plugins/jmx_
lrwxrwxrwx 1 root root 29 14 mars 16:51 /etc/munin/plugins/jboss_jmx_MultigraphAll -> /usr/share/munin/plugins/jmx_
lrwxrwxrwx 1 root root 29 14 mars 16:03 /etc/munin/plugins/managed_jmx_MultigraphAll -> /usr/share/munin/plugins/jmx_
and I commented out the ip and port from the /usr/share/munin/plugins/jmx_ file, but I'm not sure it plays a role.