Red Hat Summit Red Hat SummitApoyoConsolaDesarrolladoresIniciar una pruebaContacto

Este contenido no está disponible en el idioma seleccionado.

3.4. Changing the Agent JVM Health Check Settings

One of the more common issues to have with the agent is out of memory errors. Sizing the agent JVM heap is difficult. The agent cannot over-consume system resources or it can affect overall system performance, yet it must have enough memory available to perform intensive tasks like metrics collection and drift monitoring.
The JVM health check periodically scans the JVM and checks its memory thresholds. If the available memory falls below a specified point, then the JVM process is restarted. This can help prevent the agent from running out of memory and shutting down in an unknown state.

Note

The JVM health check is beneficial, but it is not infallible. It is possible in some situations for the memory to be exhausted faster than the scan interval.
There are three parameters for the agent health check:
  • The scan interval, rhq.agent.vm-health-check.interval-msecs
  • The heap threshold, rhq.agent.vm-health-check.low-heap-mem-threshold
  • The non-heap memory threshold, rhq.agent.vm-health-check.low-nonheap-mem-threshold
To change the health check settings:
  1. Open the agent prompt. Use the -n option to open the prompt without 
    [root@server ~]# agentRoot/rhq-agent/bin/rhq-agent.sh -n
    Copy to Clipboard Toggle word wrap
  2. Send the setconfig with the name of the preference to edit and its new value. 
    > setconfig rhq.agent.vm-health-check.interval-msecs=3000
Set preference: rhq.agent.vm-health-check.interval-msecs=3000
> setconfig rhq.agent.vm-health-check.low-heap-mem-threshold=1.1
Set preference: rhq.agent.vm-health-check.low-heap-mem-threshold=1.1
> setconfig rhq.agent.vm-health-check.low-nonheap-mem-threshold=1.1
Set preference: rhq.agent.vm-health-check.low-nonheap-mem-threshold=1.1
    Copy to Clipboard Toggle word wrap
  3. Restart the agent process to load the new configuration. 
    [root@server ~]# serverRoot/jon-server-3.2.GA/bin/rhqctl start --agent
    Copy to Clipboard Toggle word wrap
Volver arriba
Red Hat logoGithubredditYoutubeTwitter

Aprender

Pruebe, compre y venda

Comunidades

Acerca de la documentación de Red Hat

Ayudamos a los usuarios de Red Hat a innovar y alcanzar sus objetivos con nuestros productos y servicios con contenido en el que pueden confiar. Explore nuestras recientes actualizaciones.

Hacer que el código abierto sea más inclusivo

Red Hat se compromete a reemplazar el lenguaje problemático en nuestro código, documentación y propiedades web. Para más detalles, consulte el Blog de Red Hat.

Acerca de Red Hat

Ofrecemos soluciones reforzadas que facilitan a las empresas trabajar en plataformas y entornos, desde el centro de datos central hasta el perímetro de la red.

Theme

© 2025 Red Hat