JBCS httpd fails to start after update from 'mod_proxy_cluster.so: undefined symbol: proxy_run_check_trans' error

Solution Verified - Updated -


  • After some yum updates, JBCS httpd fails to start with the following error:
Cannot load modules/mod_proxy_cluster.so into server: /opt/rh/jbcs-httpd24/root/etc/httpd/modules/mod_proxy_cluster.so: undefined symbol: proxy_run_check_trans


  • JBoss Core Services (JBCS) httpd 2.4.37
    • mod_cluster
      • jbcs-httpd24-mod_cluster-native-1.3.14-20.Final_redhat_2

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