Starting Group Replication or Creating InnoDB Cluster Fails: "[ERROR] Plugin group_replication reported: 'Unable to announce tcp port 13306. Port already in use?'"

(Doc ID 2309228.1)

Last updated on SEPTEMBER 20, 2017

Applies to:

MySQL Server - Version 5.7 and later
Information in this document applies to any platform.

Symptoms

When trying to start Group Replication (either manually or through InnoDB Cluster), Group Replication fails to start and the MySQL error log has errors like:

The port number will be the one specified in the group_replication_local_address (port 13306 by default if port = 3306 and using InnoDB Cluster).

Cause

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