Auto_increment_increment help

I noticed the default value for auto_increent_increment is 3 in my cluster where it is normally 1 using basic Mysql. Is this a function of the Percona Cluster software? My cluster size is 3. I have tried to change it to 1 in the my.cnf file but it has no effect (after restart). I can change it using Mysql>’ set global…’ but it does not persist obviously. I understand why this is useful in a Master-Slave situation but feel like it is not necessary with the cluster setup.

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I found the answer. wsrep auto_increment_control.


Hello Mikem, indeed the auto increment are normally controlled via the option you mention. Having different values per-node can be useful to debug where a transaction came from.