JGRP000012: discarded message from different cluster

Products

• CA Identity Manager
• CA Identity Governance
• CA Identity Portal
• CA Identity Suite

Issue/Introduction

In a two cluster JBoss Environment with servers configured with Messaging Protocol:Unicast and HA Method:Replication.

The following errors are being reported in the Server.logs

WARN  [org.jgroups.protocols.TCP] (thread-3,null,null) JGRP000012: discarded message from different cluster node2_live_to_node1_backup (our cluster is live). Sender was imnode1

Environment

Release : 14.3

Component : CA Identity Manager

JBoss 6.4 migrated to JBoss 7.2.  

Cause

These messages are just warnings from the clustering that it is receiving a packet from a cluster partition whose name is different from it's own.

These errors are likely to be as a result of a configuration issue and or 3rd node in a cluster using the same multicast channel.

Resolution

These errors are not generated as a result of the CA code. These warnings are now visible as a result of changes to the JBoss code. You should reach out for further assistance from your JBoss administrator or reach out to RedHat for support.