[Pacemaker] Configuring Pacemaker & DRBD

[Cliff Massey]

How does stonith work in a 2-node cluster? There aren't enough nodes to make quorum and vote the bad guy out.


On Oct 7, 2011, at 4:31 PM, Cliff Massey wrote:

> ahh makes sense.
> 
> I disabled allow-migrate and now I can move the kvm machine and at the same time drbd is automatically set to primary on the new node. 
> 
> Time to setup stonith.
> 
> On Oct 7, 2011, at 4:13 PM, Florian Haas wrote:
> 
>> On 2011-10-07 21:23, Cliff Massey wrote:
>>> I  meant 8.40 :)
>>> 
>>> I ended up deciding to use Corosync instead of Heartbeat and it is working now. Now I'm configuring a KVM resource to depend on drbd. The KVM machine is started by Pacemaker,  but when I try "resource migrate" to move it to the other node nothing happens.
>> 
>> Yeah, can't work. For a resource with meta allow-migrate=true to
>> migrate, anything which that migrating resource depends on must already
>> be present on the target node. Which, when your KVM resources use DRBD,
>> can only ever work in a dual-Primary configuration. So, either set
>> allow-migrate to false (so migration reverts to the default "shut down
>> here, fire up there" method), or -- if and only if you're familiar with
>> its implications -- set up a DRBD dual-Primary configuration.
>> 
>> Cheers,
>> Florian
>> 
>> -- 
>> Need help with DRBD?
>> http://www.hastexo.com/now
>> 
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>> 
> 
> 
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>