Install
cd ${OE_AGENT_HOME}/checks_enabled
ln -s ../checks_available/check_tomcat.py ./
Configure
Apache Tomcat also ships with by default disabled status page. In order to get stats from tomcat,
you should edit CATALINA_HOME/conf/tomcat-users.xml and enable role manager-jmx.
To do this enter following to tomcat-users.xml and restart Tomcat .
<role rolename="manager-jmx"/>
<user username="User" password="Pass" roles="manager-jmx"/>
If you see 403 Access Denied, try to edit CATALINA_HOME/webapps/manager/META-INF/context.xml and somment Valve :
<Context antiResourceLocking="false" privileged="true" >
<!--
<Valve className="org.apache.catalina.valves.RemoteAddrValve" allow="127\.\d+\.\d+\.\d+|::1|0:0:0:0:0:0:0:1" />
-->
</Context>
Restart
${OE_AGENT_HOME}/oddeye.sh restart
Provides
| Name | Description | Type | Unit |
|---|---|---|---|
| tomcat_daemonthreadcount | Amount of running Java daemon threads | gauge | None |
| tomcat_heap_commited | Java Heap committed | gauge | Bytes |
| tomcat_heap_init | Java Heap init | gauge | Bytes |
| tomcat_heap_max | Java Heap max | gauge | Bytes |
| tomcat_heap_used | Java Heap used | gauge | Bytes |
| tomcat_lastgc_0 | Young generation GC time | gauge | Milliseconds |
| tomcat_lastgc_1 | Old generation GC time | gauge | Milliseconds |
| tomcat_nonheap_commited | Java non Heap committed | gauge | Bytes |
| tomcat_nonheap_init | Java non Heap init | gauge | Bytes |
| tomcat_nonheap_max | Java non Heap max | gauge | Bytes |
| tomcat_nonheap_used | Java non Heap used | gauge | Bytes |
| tomcat_peakthreadcount | Peak amount of Java threads | gauge | Bytes |
| tomcat_threadcount | Running threads of tomcat | gauge | None |
| tomcat_totalstartedthreadcount | Total amount of threads started by tomcat | counter | None |