[mod_cluster-issues] [JBoss JIRA] (MODCLUSTER-455) Discovery using proxy_list of newly added nodes

Discovery using proxy_list of newly added nodes ----------------------------------------------- Key: MODCLUSTER-455 URL: https://issues.jboss.org/browse/MODCLUSTER-455 Project: mod_cluster Issue Type: Feature Request Affects Versions: 1.3.0.Final Environment: RHEL 6.5, Java 8u25, WildFly 8.2, httpd 2.2.15 Reporter: Martin Kamp Jensen Assignee: Radoslav Husar Attachments: first-modclustermanager.log, first-server.log, httpd-site, second-modclustermanager.log, second-server.log, wildflyconfig.xml I'm not sure if the following is working as designed or if its a bug. Note that we cannot use multicast. We are testing the following setup and experiencing a mod_cluster discovery issue/challenge: - The first node is set up, mod_cluster and JGroups having _proxy_list_ and _initial_hosts_, respectively, set up to point to the IP address of the node - The first node is started - Later, the second node is set up, mod_cluster and JGroups having _proxy_list_ and _initial_hosts_, respectively, set up to point to the IP address of the new node in addition to the IP address of the first node - The second node is started - JGroups on boths nodes discovers both nodes - mod_cluster on the first node discovers both nodes (maybe because mod_cluster of the second node, which has the IP address of the first node in its proxy_list, talks to the first node) - *mod_cluster on the second node only discovers itself* - A restart of the first node (with proxy_list updated to include both nodes) fixes the problem In conclusion, since we cannot use multicast, we have to restart because then _proxy_list_ of both nodes contains the IP addresses of both nodes. It would be helpful if mod_cluster would discover like JGroups, enabling us to add additional nodes without restarts.