AMQ212034: There are more than one servers on the network broadcasting the same node id.

Products

• CA Identity Manager

Issue/Introduction

This is continuously being logged in the server.log on the Identity Manager VAPP server. I'm looking for recommendations and thoughts regarding this.

2022-12-21 20:26:35,681 WARN  [org.apache.activemq.artemis.core.client] (activemq-discovery-group-thread-dg-group1) AMQ212034: There are more than one servers on the network broadcasting the same node id. You will see this message exactly once (per node) if a node is restarted, in which case it can be safely ignored. But if it is logged continuously it means you really do have more than one node on the same network active concurrently with the same node id. This could occur if you have a backup node active at the same time as its live node. nodeID=##################

Environment

Release : 14.3 / 14.4

VAPP 

or
Jboss 7.2 / Wildfly 15 deployments.

Cause

The error is due to stale server info in the application server cache

Resolution

In a VAPP based environment:

Stop all IM nodes.  Use the stop_im alias.

Issue the deleteIDMJMSqueue alias on each node to clear any cached JMS data.

Start 1 node backup with the start_im alias.  Wait for it to be available, then start the remaining nodes. 

In a Non-VAPP based Jboss/Wildfly deployment:

Stop all IM nodes, then clear the contents of the /standalone/tmp/ and /standalone/data/ folders from each IM node.

Start node 1 and wait for it to be available, then proceed to start the remaining nodes. 



Unless there are underlying clustering issues, such as 2 clusters with the same names, this should resolve the recurring "AMQ212034: There are more than one servers on the network broadcasting the same node id" messages..