EPAgent not starting when using VMSTAT script

Products

• CA Application Performance Management Agent (APM / Wily / Introscope)
• CA Application Performance Management (APM / Wily / Introscope)
• INTROSCOPE
• DX Application Performance Management

Issue/Introduction

EPAgent failed to start when using custom VMSTAT script and the EPAgent log shows the following exception:

 [ERROR] [EPAgent] EPAgent failed to start because: Stateless plugin 'VMSTAT' must have a schedule or delay configured.
com.wily.introscope.epagent.IllegalConfigurationException: Stateless plugin 'VMSTAT' must have a schedule or delay configured.
        at com.wily.introscope.epagent.EPAPlugin.<init>(EPAPlugin.java:111)
        at com.wily.introscope.epagent.ProcessPlugin.<init>(ProcessPlugin.java:106)
        at com.wily.introscope.epagent.EPAConfig.parseConfig(EPAConfig.java:281)
        at com.wily.introscope.epagent.EPAConfig.parseConfig(EPAConfig.java:188)
        at com.wily.introscope.epagent.EPAConfig.parseConfigFile(EPAConfig.java:178)
        at com.wily.introscope.epagent.EPAgent.start(EPAgent.java:155)
        at com.wily.introscope.epagent.EPAgent.main(EPAgent.java:438)
        at com.wily.introscope.api.IntroscopeEPAgent.main(IntroscopeEPAgent.java:55)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:60)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:37)
        at java.lang.reflect.Method.invoke(Method.java:611)
        at org.tanukisoftware.wrapper.WrapperJarApp.run(WrapperJarApp.java:394)
        at java.lang.Thread.run(Thread.java:767)

Cause

This error indicates that the script needs a delay configured to work.

Environment

EPAgent 10.x

Resolution

In order to address this issue please make sure that the property "introscope.epagent.stateless.VMSTAT.delayInSeconds" is enabled and has a value in the EPAgent profile:

1.- Open IntroscopeEPAgent.properties
2.- Locate the property "introscope.epagent.stateless.VMSTAT.delayInSeconds" and check that this property is uncommented and has a value, eg:
introscope.epagent.stateless.VMSTAT.delayInSeconds=900
3.- Save the file and restart the EPAgent for the changes to take effect