title: Error MEM sending STATUS command to <host>, configuration will be reset: MEM: Can't read node
body: <p>I'm trying to implement Wildfly 8.1.0.Final domain setup, profile full-ha, with 1 master and 2 slaves with load balancing by mod_cluster.</p>
  
  <p>My environment:
  1) host master on VPS (DigitalOCean) Ubuntu 14.04 LTS x64, Wildfly 8.1.0.Final and Apache Web Server 2.4.7 with mod_cluster 1.3.1.Alpha3-SNAPSHOT;
  2) host slave1 on VPS (DigitalOCean) Ubuntu 14.04 LTS x64 and Wildfly 8.1.0.Final;
  3) host slave2 on VPS (DigitalOCean) Ubuntu 14.04 LTS x64 and Wildfly 8.1.0.Final.</p>
  
  <p>I had to compile mod_cluster due incompatibility of version 1.2.6 with Apache Web Server 2.4.7.</p>
  
  <p>I see the following errors:</p>
  
  <p>a) on host master (/var/log/apache2/error.log): "(111)Connection refused: AH00957: ajp: attempt to connect to host_slave1 failed"</p>
  
  <p>b) on host slave1 (/opt/wildfly/domain/configuration/servers/server-one/server.log): "2014-09-18 20:50:55,169 ERROR [org.jboss.modcluster] (UndertowEventHandlerAdapter - 1) MODCLUSTER000042: Error MEM sending STATUS command to host_master, configuration will be reset: MEM: Can't read node"</p>
  
  <p>So the load balancing virtual host with mod_cluster is unable to connect to hosts slave1 and slave2.</p>
  
  <p>How to solve this issue, please?</p>