7 Replies Latest reply on Jan 29, 2020 9:10 AM by pferraro

    JGroups UDP multicast issue in WildFly

    valsaraj007

      Recently we faced JGroups UDP multicast issue in WildFly. The issue started when the servers are restarted after deployment. There is no WildFly configuration change. WildFly is in domain mode with 4 nodes.

      • When we start nodes, first 3 gets started and the last one fails.
      • When we start the failed node by changing bind address to 127.0.0.1, it works. When we start the failed node by changing the jboss.default.multicast.address to different IP, it starts fine.

      <stack name="udp">

                          <transport type="UDP" socket-binding="jgroups-udp"/>

                          <protocol type="PING"/>

                          </protocol>

                          <protocol type="MERGE3"/>

                          <protocol type="FD_SOCK" socket-binding="jgroups-udp-fd"/>

                          <protocol type="FD_ALL"/>

                          <protocol type="VERIFY_SUSPECT"/>

                          <protocol type="pbcast.NAKACK2"/>

                          <protocol type="UNICAST3"/>

                          <protocol type="pbcast.STABLE"/>

                          <protocol type="pbcast.GMS"/>

                          <protocol type="UFC"/>

                          <protocol type="MFC"/>

                          <protocol type="FRAG2"/>

                          <protocol type="RSVP"/>

                      </stack>

      What may be the issue?