Concepts 11.5 Replication Options in my.cnf If you are using replication, we recommend you to use MySQL Version 3.23.30 or later.
Older versions work, but they do have some bugs and are missing some features.
On both master and slave you need to use the server-id option. Write to a binary update log to the specified location. The problem is fixed in Version 3.23.25. This information is stored in the binary log index file. You can use this option if you want to be a rebel.