In April, I already posted an article on how to upgrade safely your MySQL InnoDB Cluster, let’s review this procedure now that MySQL 8.0.12 is out.
To upgrade all the members of a MySQL InnoDB Cluster (Group), you need to keep in mind the following points:
- upgrade all the nodes one by one
- always end by the Primary Master in case of Single Primary Mode
- after upgrading the binaries don’t forget to start MySQL
without starting Group Replication
- to run
Let’s see this in action on the video below:
As you could see, this is quick and easy.