"All workers are in error state" after upgrade to JBCS httpd 2.4.37

Solution Verified - Updated -


  • After upgrading to JBCS httpd 2.4.37, we began seeing the following errors after no other changes:
[:debug] [pid 16764:tid 8968] mod_proxy_cluster.c(1854): proxy: byrequests balancer FAILED
[:error] [pid 16764:tid 8968] proxy: CLUSTER: (balancer://perfbalancer). All workers are in error state.


  • JBoss Core Services (JBCS) httpd 2.4.37+
  • mod_cluster

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