Starting Confluence node fails with 'Port [5801] is already in use and auto-increment is disabled. Hazelcast cannot start' error

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Platform Notice: Server and Data Center Only - This article only applies to Atlassian products on the server and data center platforms.

Problem

Attempting to start the second node in the same machine results in the following error found in the atlassian-confluence.log:

[com.hazelcast.instance.DefaultAddressPicker] log null [dev] [3.3-RC1-atlassian-1] Port [5801] is already in use and auto-increment is disabled. Hazelcast cannot start.
java.net.BindException: Address already in use

Cause

Both nodes are using the same Hazelcast port

Resolution

  • Shutdown the second node

  • Add the following system property (See: Configuring System Properties):

    -Dconfluence.cluster.hazelcast.listenPort=5851
  • Startup Confluence again

Last modified on May 3, 2016

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