mod_cluster does not remove persistently hung JVM or route traffic away from it

Solution Unverified - Updated -


  • One of our backend JVMs reached a permanently stalled state. All requests to it were always timing out and all periodic ping attempts from mod_cluster to it were timing out. But still, mod_cluster never removed this bad JVM from the balancer and it continued to attempt requests to it.


  • JBoss Core Services (JBCS)
    • Apache httpd
    • mod_cluster
  • JBoss Enterprise Application Platform (EAP)
  • JBoss Web Server (JWS)
    • Tomcat

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In