Cyrus 'cluster' general upgrade strategy?
wes at umich.edu
Tue May 15 14:53:02 EDT 2007
You'll need to upgrade primary and replica backends together for a
2.3.7 to 2.3.8 upgrade. Other than that, you can upgrade just one
backend pair in a 2.3.7 cluster, no problem. Once you have
confidence in the correctness of 2.3.8, upgrade the rest of the
backends. It's also pretty common to mix 2.3.x backends with 2.2.x
frontends and/or master.
On 15 May 2007, at 14:24, Nik Conwell wrote:
> For those with medium to large scale murders or other glued
> together clusters of cyrus servers, what's the general strategy for
> Do you take downtime for the entire cluster and upgrade, or do you
> roll through upgrades of the parts?
> The latter would be prudent, except that I discovered you can't
> replicate 2.3.7 to 2.3.8 (CREATE has an extra argument at 2.3.8) so
> it wouldn't surprise me if it generally isn't considered a good
> idea to mix versions like this in a murder.
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