mod_cluster throwing MEM: MEM: Can't read node in JBoss and cping/cpong errors in Apache

Issue

• I am running mod_cluster and seeing the following errors in Apache:

• Apache httpd error_log :

        [debug] mod_manager.c(1957): manager_handler STATUS (/) processing: "JVMRoute=node1&Load=-1"
        [debug] mod_manager.c(1998): manager_handler STATUS  OK
        [error] ajp_cping_cpong: apr_socket_recv failed
        [debug] mod_proxy_cluster.c(1330): ajp_cping_cpong: Done
        [debug] mod_proxy_cluster.c(1432): proxy_cluster_try_pingpong: cping_cpong failed

• Apache httpd Access Log :

"STATUS / HTTP/1.1" 500 630 "-" "ClusterListener/1.0"

• And the following error(s) in JBoss:

   ERROR [org.jboss.modcluster.mcmp.impl.DefaultMCMPHandler] (ContainerBackgroundProcessor[StandardEngine[jboss.web]]) Error [MEM: MEM: Can't read node: {4}] sending command STATUS to proxy 10.0.1.1:17777, configuration will be reset