Frequently Asked questions - No Error
16.4.1. No error That happens when Advertise is not working: The nodes don't get the advertise messages from httpd. Check the modules are loaded and Advertise is started. In httpd.conf activate extended information display, add: AllowDisplay On When accessing to the mod_cluster_manager you should get something like: If not, go to the Minimal Example and add the missing directive(s). Check that Advertise message are received on the cluster node. A small Java utility could be used to check Advertise. It is in the mod_cluster repository and can be compiled using javac. A compiled version can be found under in /opt/jboss/httpd/tools in the bundles. Run it using java Advertise multicastaddress port. The output should be something like: [jfclere@jfcpc java]$ java Advertize 224.0.1.105 23364 ready waiting... received: HTTP/1.0 200 OK Date: Mon, 28 Jun 2010 07:30:31 GMT Sequence: 1 Digest: df8a4321fa99e5098174634f2fe2f87c Server: 1403c3be-837a-4e76-85b1-9dfe5ddb4378 X-Manager-Address: test.example.com:6666 X-Manager-Url: /1403c3be-837a-4e76-85b1-9dfe5ddb4378 X-Manager-Protocol: http X-Manager-Host: test.example.com No Advertise messages Check firewall (don't forget the boxes firewall). Advertise uses UDP port 23364 and multicast addresse 224.0.1.105 Can't get Advertise messages Use ProxyList property. In case Advertise can't work you put the address and port of the VirtualHost used in httpd to receive the MCMP. In server/profile/deploy/mod_cluster.sar/META-INF/mod_cluster-jboss-beans.xml test.example.com:6666 or in server.xml: