[Pacemaker] Time-based resource stickiness not working cleanly

[Velayutham, Prakash]

Hi Jake,

On Jun 27, 2012, at 4:42 PM, Jake Smith wrote:

> ----- Original Message -----
>> From: "Prakash Velayutham" <Prakash.Velayutham at cchmc.org>
>> To: "The Pacemaker cluster resource manager" <pacemaker at oss.clusterlabs.org>
>> Sent: Wednesday, June 27, 2012 4:06:39 PM
>> Subject: Re: [Pacemaker] Time-based resource stickiness not working cleanly
>> 
>> I created a simple IPaddr2 resource for this testing.
>> 
>> 1. I can confirm that this resource (with just a location preference
>> constraint and nothing else) does not get restarted when a node
>> reboots. So must be something with the clone/group resources. Not
>> sure how to debug right now.
> 
> Not sure but maybe something to do with interleave/ordered in the clone definition?
> http://www.clusterlabs.org/doc/en-US/Pacemaker/1.1/html/Pacemaker_Explained/ch10s02s02.html
> 
> You should try what Phil said and create a dummy primitive and clone that then test and see if the cloned dummy exhibits the same issues as the problem ones.

Yes, I will, in a short while. Will report back how it goes.

> 
>> 2. I have a time-based rule which prevents any resource in the
>> cluster from going back to the preferred node between 7am and 3pm,
>> monday through friday.
>> 	I can confirm that in my setting this does not work reliably.
>> 		The resource fails over to the non-preferred node, but stays there
>> 		even if the current time is outside of the core business hours.
>> 		If I manually stop and start the resource, then it respects the
>> 		location preference and goes to the preferred node.
>> 		I have the cluster-recheck-interval set to 1min.
> 
> I didn't see/look at your config but that sounds like a score problem between stickiness/clone score/rule value.

If you have a working time-based rule at your site that you are willing to share (after deidentifying that is), that will be much appreciated.

> 
> HTH
> 
> Jake

Thanks,
Prakash

> 
>> 		
>> Thanks,
>> Prakash
>> 
>> On Jun 27, 2012, at 3:01 PM, Velayutham, Prakash wrote:
>> 
>>> I am all for testing, but looks like our database person wants this
>>> completed now. I will test this in our dev. environment soon.
>>> 
>>> Thanks,
>>> Prakash
>>> 
>>> On Jun 27, 2012, at 2:44 PM, Phil Frost wrote:
>>> 
>>>> On 06/27/2012 02:33 PM, Velayutham, Prakash wrote:
>>>>> and the cluster works fine, except that when the fenced
>>>>> (STONITHed) node comes back up and joins the cluster, all
>>>>> resources (including the one that is running in its preferred
>>>>> location) gets restarted.
>>>>> 
>>>>> This is annoying and I am trying to find out why this is. I
>>>>> started another thread for that exact issue this morning and I
>>>>> have shared the relevant portions of my CIB there. Please let me
>>>>> know if you see anything there that could cause this.
>>>> 
>>>> Your best approach is probably to simplify the configuration as
>>>> much as you can. Eliminate any resources or constraints that
>>>> aren't necessary to demonstrate the problem, and use
>>>> ocf:pacemaker:Dummy and ocf:pacemaker:Stateful resources instead
>>>> of the real ones. In simplifying the configuration, you may
>>>> discover a mistake. If not, you will have something that doesn't
>>>> take so much time to consider, so more people will be willing to
>>>> help you.
>>>> 
>>>> Also, play with crm_simulate.
>>>> 
>>>> Also see my previous response about a similar problem I had, and a
>>>> suspected bug that may be affecting you. If you can independently
>>>> confirm the bug, after working out a minimal test case as above,
>>>> it's more likely someone will fix it.
>>> 
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>> 
>> 
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>> 
> 
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