maria-discuss team mailing list archive

[William Edwards <wedwards@xxxxxxxxxxxxxx>]

Hi,

Does Galera support rolling upgrades between multiple major versions? I 
will be upgrading my Galera cluster from MariaDB 10.3.34 to 10.6.x. It'd 
save a lot of time to jump straight from 10.3 to 10.6 instead of 
upgrading 10.3 -> 10.4 -> 10.5 -> 10.6.

The documentation at 
https://mariadb.com/kb/en/upgrading-from-mariadb-103-to-mariadb-104-with-galera-cluster/ 
implies that the MariaDB version is irrelevant, and only the Galera 
version matters.

> Next, make sure that the Galera version numbers are compatible.
>
> If you are upgrading from the most recent MariaDB 10.3 release to 
> MariaDB 10.4, then the versions will
> be compatible. MariaDB 10.3 uses Galera 3 (i.e. Galera wsrep provider 
> versions 25.3.x), and MariaDB
> 10.4 uses Galera 4 (i.e. Galera wsrep provider versions 26.4.x). This 
> means that upgrading to MariaDB
> 10.4 also upgrades the system to Galera 4. However, Galera 3 and Galera 
> 4 should be compatible for the
> purposes of a rolling upgrade, as long as you are using Galera 26.4.2 
> or later.

--
With kind regards,

William Edwards