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Replication Fails With: Fatal Error: The Replica I/O Thread Stops Because Source and Replica Have Equal MySQL Server UUIDs; These UUIDs Must Be Different for Replication to Work; Error 1593 (Doc ID 1599321.1)

Last updated on SEPTEMBER 04, 2023

Applies to:

MySQL Server - Version 5.6 and later
Information in this document applies to any platform.


Disclaimer: Starting from v8.0, some terms have been deprecated. Older releases will only use the deprecated terminology, and new releases will only use new terminology. Please see for a complete list of those changes, and in which minor versions it happened.

When attempting to start replication, the following error occurs:



This issue will typically happen just after cloning a replica from the source, particularly when file system snapshots are used or the data directory has been copied using file system commands.


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