maria-discuss team mailing list archive

[Daniel Black <daniel@xxxxxxxxxxx>]

William,

Recently a lot of testing was done on this
(https://jira.mariadb.org/browse/MDEV-27437).

>From reading https://jira.mariadb.org/browse/MDEV-28247 an upgrade to
10.3.35 might be required first (or an explicit disable of background
merge - if possible).

So sst=rsync is required with innodb_use_native_aio=0.

https://mariadb.com/kb/en/introduction-to-state-snapshot-transfers-ssts/#rsync-rsync_wan

There's a task to upgrade the documentation, but I agree there are a
few gaps at the moment.

https://jira.mariadb.org/browse/MDEV-28483

The reddit user
https://www.reddit.com/r/mariadb/comments/us7wbs/joining_node_to_galera_cluster_failed/
is attempting the same.

On Thu, May 19, 2022 at 4:02 AM William Edwards <wedwards@xxxxxxxxxxxxxx> wrote:
>
> 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
>
>
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