Hi!

On Tue, Sep 30, 2014 at 8:42 AM, Benoit Panizzon benoit.panizzon@imp.ch wrote:

Hello

We would like to upgrade from 5.5.33a+maria-1~saucy to 5.5.39+maria-1~saucy on a running cluster without service interruption.

So we took down one node, upgraded and restarted that instance...

It fails to connect to the next gcomm server. MariaDB fails to start. We tested network connectivity, there is no issue we could detect.

It might be because of different galera library versions. Check out scenario #2 http://nirbhay.in/2014/02/galera-connection-timed-out/

Best, Nirbhay

We downgraded back to 5.5.33a+maria-1~saucy and the connectivity issue disappeared.

So my question here is: Is it possible to upgrade the cluster without interruption, or do we have to shut the whole cluster down, upgrade every node and then restart everything?

Kind regards

Benoit Panizzon -- I m p r o W a r e A G - ______________________________________________________

Zurlindenstrasse 29 Tel +41 61 826 93 07 CH-4133 Pratteln Fax +41 61 826 93 02 Schweiz Web http://www.imp.ch ______________________________________________________

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