This might be a duplicate questions asked before. But I need to understand a possible approach for my ENV
running innodb
engine.
Is it possible to upgrade a Master MySQL Server to 5.5
to 5.6
and replication Slave which is on Version 5.7
If this is possible then how do we perform this activity, because we am getting this below error of Server_UUID
when replicating the Slave (Slave version 5.7.11 and Master Version 5.6.29)
Errno: 1593
Fatal error: The slave I/O thread stops because master and slave
have equal MySQL server UUIDs; these UUIDs must be different for
replication to work.
Purpose is to UPGRADE
both the server on the same version 5.7
Currently Version
Server1 and Server2 are on 5.6.29
Beginner in MySQL unable to understand the concept of replication with the new version, open for better suggestion.
Best Answer
Check out this article by the folks at Percona regarding duplicate UUIDs, it may be worth checking how the slave was created originally and checking out the
auto.cnf
settings on each server. https://www.percona.com/blog/2014/01/21/beware-mysql-5-6-server-uuid-cloning-slaves/