Comments - Upgrading from 10.4 to 10.5 Galera changes
Content reproduced on this site is the property of its respective owners,
and this content is not reviewed in advance by MariaDB. The views, information and opinions
expressed by this content do not necessarily represent those of MariaDB or any other party.
It does not seem to be more complicated that doing a (rolling) minor upgrade.
Regarding the Galera provider, the latest 10.4 uses the same provider and protocol version as the latest 10.5; so no problem on that side. Ref: https://mariadb.com/kb/en/what-is-mariadb-galera-cluster/
For the rest, we still have to watch for the usual for a major upgrade: https://mariadb.com/kb/en/upgrading-from-mariadb-104-to-mariadb-105/ and https://mariadb.com/kb/en/upgrading-between-major-mariadb-versions/
Since there's still not a official document, I'll do some tests and report here.