[ClusterLabs] Pacemaker PostgreSQL cluster

[Ken Gaillot]

On Tue, 2018-05-29 at 22:25 +0200, Salvatore D'angelo wrote:
> Hi,
> 
> Regarding last question about pacemaker dependencies for Ubuntu I
> found this for 1.1.18:
> https://launchpad.net/ubuntu/+source/pacemaker/1.1.18-0ubuntu2/+build
> /14818856
> 
> It’s not clear to me why pacemaker 1.1.18 is available on
> launchpad.net and not on the official Ubuntu Search Packages website.
> However, can I assume 1.1.19 and 2.2.0 have the same dependencies
> list (considering they have only removed deprecated function and
> applied some bug fixes)?

Yes, the dependencies should be the same (when corosync 2 is used)

> Thanks again for answers
> 
> 
> > On 29 May 2018, at 17:41, Jehan-Guillaume de Rorthais <jgdr at dalibo.
> > com> wrote:
> > 
> > On Tue, 29 May 2018 14:23:31 +0200
> > Salvatore D'angelo <sasadangelo at gmail.com> wrote:
> > ...
> > > 2. I read some documentation about upgrade and since we want 0 ms
> > > downtime I
> > > think the Rolling Upgrade (node by node) is the better approach.
> > 
> > The 0ms upgrade is almost impossible. At some point, you will have
> > to move the
> > master somewhere else.
> > 
> > Unless you have some session management that are able to wait for
> > the
> > current sessions to finish, then hold the incoming sessions while
> > you are
> > moving the master, you will have downtime and/or xact rollback.
> > 
> > Good luck anyway :)
> > 
> > -- 
> > Jehan-Guillaume de Rorthais
> > Dalibo
> 
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-- 
Ken Gaillot <kgaillot at redhat.com>