Frequently Asked questions - Error in server.log or catalina.out
16.4.2. Error in server.log or catalina.out "IO error sending command ": Check firewall and error_log if there is nothing error_log then it is a firewall problem. If you have something like: 18:36:14,533 INFO [DefaultMCMPHandler] IO error sending command INFO to proxy jfcpc/10.33.144.3:8888 You can use telnet hostname/address port to check by hands that it is OK for example: [jfclere@jfcpc docs]$ telnet 10.33.144.3 8888 Trying 10.33.144.3... Connected to jfcpc. Escape character is '^]'. GET / It works!Connection closed by foreign host. Check that the address and port are the expected ones you may use ServerAdvertise On http://hostname:port, like: ServerAdvertise On http://localhost:6666 Or use the servlet testhttpd in the testhttpd.war of the bundle (in /opt/jboss/httpd/tools). Install/deploy it in in the node and start the AS/Tomcat on the node, than access to the node directly and call /testhttpd/testhttpd If you don't get a similar page the output should help to find that is wrong.