Default IpMonitor Timeout Configuration Can Lead To "Failure To Reach Address" Error Causing Nodes To Be Ejected From The Coherence Cluster (Doc ID 1489309.1)

Last updated on APRIL 17, 2016

Applies to:

Oracle Coherence - Version 3.7.1 and later
Information in this document applies to any platform.

Symptoms

The IpMonitor service in a node reports an error, "Failed to reach address xxxx within the IpMonitor timeout". There are log messages indicating that the IpMonitor could not reach a particular machine that list the Coherence nodes on that machine that are ejected from the cluster.  For example, a member with Id=53, coincidentally in this case the senior member of the cluster, is acting as the IpMonitor on its server and reports the following:

These members have to be manually restarted.

Cause

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