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Steps to Reproduce:

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Easiest way to reproduce is using httpd-2.2.24/mod_cluster-1.2.3.Final configured as a reverse proxy and load balancer for two or more JBoss-AS-7.2.0 instances configured to work in HA. If the httpd.conf file contains one or more BalancerMember directive as in

<Proxy balancer://mycluster>
BalancerMember .........
BalancerMember .........
</Proxy>

then the httpd server crashes just by running it.

All the details and configuration files can be found in the forum reference thread

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Easiest way to reproduce is using httpd-2.2.24/mod_cluster-1.2.3.Final configured as a reverse proxy and load balancer for two or more JBoss-AS-7.2.0 instances configured to work in HA. If the httpd.conf file contains one or more BalancerMember directive as in <Proxy balancer://mycluster> BalancerMember ......... BalancerMember ......... </Proxy> then the httpd server crashes just by running it. All the details and configuration files can be found in the forum reference thread
Forum Reference:
https://community.jboss.org/thread/231744

httpd dumps core in mod_proxy_cluster.c if the httpd.conf file contains BalancerMember directives.

this happens at least with the following two setups:
1) httpd-2.4.6 and mod_cluster-1.2.x
2) httpd-2.2.24 and mod_cluster-1.2.3.Final

is incorporated by

MODCLUSTER-543 BalancerMember directives don't work and cause SegFaults

relates to

MODCLUSTER-391 mod_cluster and mod_proxy integration