Comment 2 for bug 1785598

The rabbit cluster is broken - one of the nodes has not joined to the cluster and created own one as it is described here: https://bugs.launchpad.net/juniperopenstack/+bug/1784924

Two nodes:
(undercloud) [stack@queensa ~]$ ssh heat-admin@192.168.24.24 sudo docker exec 7d1829bea8b6 rabbitmqctl cluster_status
Cluster status of node 'contrail@overcloud-contrailcontroller-1'
[{nodes,[{disc,['contrail@overcloud-contrailcontroller-0',
                'contrail@overcloud-contrailcontroller-1']}]},
 {running_nodes,['contrail@overcloud-contrailcontroller-0',
                 'contrail@overcloud-contrailcontroller-1']},
 {cluster_name,<<"<email address hidden>">>},
 {partitions,[]},
 {alarms,[{'contrail@overcloud-contrailcontroller-0',[]},
          {'contrail@overcloud-contrailcontroller-1',[]}]}]

Third node that created own cluster:
(undercloud) [stack@queensa ~]$ ssh heat-admin@192.168.24.14 sudo docker exec fd2081d241f5 rabbitmqctl cluster_status
Cluster status of node 'contrail@overcloud-contrailcontroller-2'
[{nodes,[{disc,['contrail@overcloud-contrailcontroller-2']}]},
 {running_nodes,['contrail@overcloud-contrailcontroller-2']},
 {cluster_name,<<"<email address hidden>">>},
 {partitions,[]},
 {alarms,[{'contrail@overcloud-contrailcontroller-2',[]}]}]

Could you try build with the reviews from that bug.