Upgrading from MariaDB 10.4 to MariaDB 10.5 Galera Cluster

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 21 Nov 2020 20:58:09 +0000

Because upgrading from MariaDB 10.4 to MariaDB 10.5 (non-clustered) seems not to be a problem
[ 1
] we take the challenge and try to create a receipt based on the MariaDB 10.3 to MariaDB 10.4 Galera Cluster upgrade documentation
[ 3
]:

Migration from MySQL 5.7 to MariaDB 10.4

oli.sennhauser@fromdual.com (Oli Sennhauser) — Sat, 30 Nov 2019 14:17:48 +0000

Up to version 5.5 MariaDB and MySQL can be considered as “the same” databases. The official wording at those times was “drop-in-replacement”. But now we are a few years later and times and features changed. Also the official wording has slightly changed to just “compatible”.
FromDual recommends that you consider MariaDB 10.3 and MySQL 8.0 as completely different database products (with some common roots) nowadays. Thus you should work and act accordingly.

10.4 on FromDual GmbH

Upgrading from MariaDB 10.4 to MariaDB 10.5 Galera Cluster

Migration from MySQL 5.7 to MariaDB 10.4