[Pacemaker] configuration variants for 2 node cluster

[Christine Caulfield]

On 24/06/14 16:47, Digimer wrote:
> On 24/06/14 03:55 AM, Christine Caulfield wrote:
>> On 23/06/14 15:49, Digimer wrote:
>>> Hi Kostya,
>>>
>>>    I'm having a little trouble understanding your question, sorry.
>>>
>>>    On boot, the node will not start anything, so after booting it, you
>>> log in, check that it can talk to the peer node (a simple ping is
>>> generally enough), then start the cluster. It will join the peer's
>>> existing cluster (even if it's a cluster on just itself).
>>>
>>>    If you booted both nodes, say after a power outage, you will check
>>> the connection (again, a simple ping is fine) and then start the cluster
>>> on both nodes at the same time.
>>
>>
>> wait_for_all helps with most of these situations. If a node goes down
>> then it won't start services until it's seen the non-failed node because
>> wait_for_all prevents a newly rebooted node from doing anything on its
>> own. This also takes care of the case where both nodes are rebooted
>> together of course, because that's the same as a new start.
>>
>> Chrissie
>
> This isn't available on RHEL 6, is it? iirc, it's a Corosync v2 feature?
>

That's correct. qdiskd is available on RHEL-6

Chrissie