[Pacemaker] Stopping/restarting pacemaker without stopping resources?

[Andrei Borzenkov]

В Mon, 27 Oct 2014 11:09:08 +1100
Andrew Beekhof <andrew at beekhof.net> пишет:

> 
> > On 25 Oct 2014, at 12:38 am, Andrei Borzenkov <arvidjaar at gmail.com> wrote:
> > 
> > On Fri, Oct 24, 2014 at 9:17 AM, Andrew Beekhof <andrew at beekhof.net> wrote:
> >> 
> >>> On 16 Oct 2014, at 9:31 pm, Andrei Borzenkov <arvidjaar at gmail.com> wrote:
> >>> 
> >>> The primary goal is to transparently update software in cluster. I
> >>> just did HA suite update using simple RPM and observed that RPM
> >>> attempts to restart stack (rcopenais try-restart). So
> >>> 
> >>> a) if it worked, it would mean resources had been migrated from this
> >>> node - interruption
> >>> 
> >>> b) it did not work - apparently new versions of installed utils were
> >>> incompatible with running pacemaker so request to shutdown crm fails
> >>> and openais hung forever.
> >>> 
> >>> The usual workflow with one cluster products I worked before was -
> >>> stop cluster processes without stopping resources; update; restart
> >>> cluster processes. They would detect that resources are started and
> >>> return to the same state as before stopping. Is something like this
> >>> possible with pacemaker?
> >> 
> >> absolutely.  this should be of some help:
> >> 
> >> http://clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/_disconnect_and_reattach.html
> >> 
> > 
> > Did not work. It ended up moving master to another node and leaving
> > slave on original node stopped after that.
> 
> When you stopped the cluster or when you started it after an upgrade?

When I started it

crm_attribute -t crm_config -n is-managed-default -v false
rcopenais stop on both nodes
rcopenais start on both node; wait for them to stabilize
crm_attribute -t crm_config -n is-managed-default -v true

It stopped running master/slave, moved master and left slave stopped.

> 
> > I have crm_report if this
> > is not expected ...
> > 
> > pacemaker Version: 1.1.11-3ca8c3b
> > 
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> > 
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> 
> 
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