mirror of
https://github.com/munin-monitoring/contrib.git
synced 2018-11-08 00:59:34 +01:00
67 lines
3.0 KiB
Plaintext
67 lines
3.0 KiB
Plaintext
|
-------- JMX plugin for Munin ---------
|
||
|
|
|
||
|
|
Java JMX Munin plugin enables you to monitor JMX attributes in Munin.
|
||
|
|
As soon as JMX embedded in Java 5, any Java process may expose parameters to be monitored using JMX interface,
|
||
|
|
look http://java.sun.com/j2se/1.5.0/docs/guide/management/agent.html and http://java.sun.com/jmx for details
|
||
|
|
In Java version < 5 it is still possible to expose JMX interface using third party libraries
|
||
|
|
|
||
|
|
To see what can be monitored by JMX, run <JDK>/bin/jconsole.exe and connect to
|
||
|
|
the host/port you setup in your Java process.
|
||
|
|
|
||
|
|
Some examples are:
|
||
|
|
* standard Java JMX implementation exposes memory, threads, OS, garbage collector parameters
|
||
|
|
* Tomcat exposes multiple parameters - requests, processing time, threads, etc..
|
||
|
|
* spring framework allows to expose Java beans parameters to JMX
|
||
|
|
* your application may expose any attributes for JMX by declaration or explicitly.
|
||
|
|
* can monitor localhost or remote processes
|
||
|
|
|
||
|
|
-------- Installation ---------
|
||
|
|
|
||
|
|
Pre-requsisites are:
|
||
|
|
- installed munin-node
|
||
|
|
- Java version 5 JRE
|
||
|
|
|
||
|
|
1) Files from "plugin" folder must be copied to /usr/share/munin/plugins (or another - where your munin plugins located)
|
||
|
|
2) Make sure that jmx_ executable : chmod a+x /usr/share/munin/plugins/jmx_
|
||
|
|
3) Copy configuration files that you want to use, from "examples" folder, into /usr/share/munin/plugins folder
|
||
|
|
4) create links from the /etc/munin/plugins folder to the /usr/share/munin/plugins/jmx_
|
||
|
|
The name of the link must follow wildcard pattern:
|
||
|
|
jmx_<configname>,
|
||
|
|
where configname is the name of the configuration (config filename without extension), for example:
|
||
|
|
ln -s /usr/share/munin/plugins/jmx_ /etc/munin/plugins/jmx_process_memory
|
||
|
|
5) optionally specify the environment variable for JMX URL. The default URL corresponds to localhost:1616.
|
||
|
|
If you have different port listening by JMX or different hostname to monitor, specify jmxurl parameter
|
||
|
|
in /etc/munin/plugin-conf.d/munin-node:
|
||
|
|
|
||
|
|
[jmx_*]
|
||
|
|
env.jmxurl service:jmx:rmi:///jndi/rmi://localhost:1616/jmxrmi
|
||
|
|
|
||
|
|
-------- Check Installation ---------
|
||
|
|
|
||
|
|
To check that all installed properly, try invoke plugins from command line, using links like:
|
||
|
|
|
||
|
|
root@re:/etc/munin/plugins# ./jmx_java_process_memory config
|
||
|
|
graph_category Java
|
||
|
|
...
|
||
|
|
root@re:/etc/munin/plugins# ./jmx_java_process_memory
|
||
|
|
java_memory_nonheap_committed.value 35291136
|
||
|
|
...
|
||
|
|
|
||
|
|
If you have configured environment for jmxurl, do not forget to export it before!
|
||
|
|
|
||
|
|
-------- Configuration Files ---------
|
||
|
|
|
||
|
|
Folder "examples" contains configuration files for Java and Tomcat monitoring examples.
|
||
|
|
The format of configuration file is a superset of Munin plugin "config" command output
|
||
|
|
(http://munin.projects.linpro.no/wiki/protocol-config)
|
||
|
|
It has the following additions:
|
||
|
|
|
||
|
|
<fieldname>.jmxObjectName JMX object name, e.g. java.lang:type=Memory
|
||
|
|
<fieldname>.jmxAttributeName JMX attribute name, e.g. NonHeapMemoryUsage
|
||
|
|
<fieldname>.jmxAttributeKey If attribute is a composed data (structure), the name of the field in structure, e.g. max
|
||
|
|
|
||
|
|
% separates comments in file
|
||
|
|
|
||
|
|
|
||
|
|
|