mod_cluster returns 404s following the restart of a crashed or killed JBoss node

Solution Verified - Updated -

Issue

  • If a JBoss node is not gracefully shutdown (if it crashed or was killed), then we see some 404s from mod_cluster when that node is restarted. It looks like mod_cluster starts sending requests to the restarting JBoss node before the apps have deployed.
  • Why JBoss EAP instances will not rejoin mod_cluster after its restart?

Environment

  • JBoss Enterprise Application Platform (EAP)
  • JBoss Enterprise Web Server (EWS)
  • Apache httpd
  • mod_cluster

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