[Pacemaker] Automating Pacemaker Setup

[Andrew Beekhof]

On Mon, May 30, 2011 at 3:59 PM, Dejan Muhamedagic <dejanmm at fastmail.fm> wrote:
> Hi,
>
> On Fri, May 27, 2011 at 08:21:08PM +0000, veghead wrote:
>> veghead <sean at ...> writes:
>> > Todd Nine <todd at ...> writes:
>> > Wow. The example pacemaker config and the trick of starting
>> > heartbeat before
>>
>> Bah. So close. But I still don't have it completely automated.
>>
>> If I start heatbeat on the first node and then run:
>>
>> crm configure < myconfigure.txt
>>
>> That fails. If I start heartbeat on the second node and wait for the
>> two nodes to connect to each other (so that we have a quorum), then I
>> can run "crm configure" and it works.
>>
>> So that leaves me with couple questions:
>>
>> 1) Is there a way to force crm to accept my configuration request
>> ~before~ starting the second node?
>
> No before the DC is elected.

Isn't there a force option?  I thought that set the cib_quorum_override flag.

> There are two settings: dc-deadtime
> and startup-fencing which can reduce the time for DC election.
> Note that disabling startup fencing is not recommended. But I
> don't know what's your use case. YMMV.
>
>> 2) Is there a way to tell Pacemaker to ignore quorum requirements
>> ~before~ starting additional nodes?
>>
>> 2) Is there an alternate way to configure Pacemaker?
>
> Yes, you can modify the CIB _before_ starting pacemaker. Sth
> like:
>
> CIB_file=/var/lib/heartbeat/crm/cib.xml crm configure ...
>
> But in that case you need to remove cib.xml.sig. Then you have to
> make sure that pacemaker starts first on this node. Consider this
> only if everything else fails.
>
> Thanks,
>
> Dejan
>
>> -Sean
>>
>>
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>
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> Project Home: http://www.clusterlabs.org
> Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf
> Bugs: http://developerbugs.linux-foundation.org/enter_bug.cgi?product=Pacemaker
>