[ https://issues.jboss.org/browse/WFLY-11900?page=com.atlassian.jira.plugin... ] Paul Ferraro commented on WFLY-11900: ------------------------------------- [~bhavesh.rkharwa] Please attach server logs from both machines so that we can tell what is preventing your clusters from merging. In general, singleton services are only as reliable as the cluster on which they run. To ensure that you singleton services do not start while your cluster is partitioned (or, in your case, not yet merged), you should build your singleton service such that it requires a quorum of 2. -- This message was sent by Atlassian Jira (v7.12.1#712002)