[Pacemaker] Enable remote monitoring

Andrew Beekhof andrew at beekhof.net
Thu Dec 6 04:04:20 EST 2012

On Thu, Dec 6, 2012 at 3:41 PM, Gao,Yan <ygao at suse.com> wrote:
> Hi Andrew,
> Thanks for the comments!
> On 12/06/12 09:44, Andrew Beekhof wrote:
>> On 05/12/2012, at 11:27 PM, "Gao,Yan" <ygao at suse.com> wrote:
>>> Hi,
>>> This is the first step - the support of "restart-origin" for order
>>> constraint along with the test cases:
>>> https://github.com/gao-yan/pacemaker/commits/restart-origin
>>> It looks straight-forward to me. Hope I didn't miss anything ;-)
>>> If restart-origin="true" combines with kind="Optional", it just means
>>> "Optional". So that a failed nagios resource would not affect the vm.
>>> I'm not sure if we should relate the restarts count with the
>>> migration-threshold of the basic resource. Even without this, users can
>>> specify  how many failures of a particular nagios resource they can
>>> tolerate on a node, the vm will migrate with it anyway.
>> Does that make sense though?
>> You've not achieved anything a restart wouldn't have done.
>> The choice to move the VM should be up to the VM.
> If the fail-count of a nagios resource reaches its own
> migration-threshold, the colocated VM should migrate with it anyway,
> shouldn't it?

But moving a nagios resource makes no sense.
Because its running inside the guest, which would have already moved
if it was the right thing to do.

> I like the concept of "failure-delegate". If we introduce it, it sounds
> more like a resource's meta/op attribute to me, rather than into order
> constraint or group. What do you think?

Yes. It would be a resource meta attribute.

> Regards,
>   Gao,Yan
> --
> Gao,Yan <ygao at suse.com>
> Software Engineer
> China Server Team, SUSE.
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