[Pacemaker] pacemaker-remote container as a clone resource

[Patrick Hemmer]

*From:* Andrew Beekhof <andrew at beekhof.net>
*Sent:* 2014-08-31 19:57:43 EDT
*To:* The Pacemaker cluster resource manager <pacemaker at oss.clusterlabs.org>
*Subject:* Re: [Pacemaker] pacemaker-remote container as a clone resource

> On 31 Aug 2014, at 6:09 pm, Patrick Hemmer <pacemaker at feystorm.net> wrote:
>
>> I'm interested in creating a resource that will control host containers running pacemaker-remote. The catch is that I want this resource to be a clone, so that if I want more containers, I simply increase the `clone-max` property.
> What kind of container?
Well I would hope the solution is generic enough to work with any
container. But in my specific case, EC2 instances. Plus maybe docker for
development work.

>
> Most development was done with VirtualMachine which needs a unique name anyway (ie. cant be cloned).
With EC2 (and docker), you create an instance/container and the name &
address is returned after creation.

>
> Interesting concept though, I'm sure we can figure out some way to get it done.
>
>> The problem is that the `remote-node` meta parameter is set on the clone resource, and not the children. So I can't see a way to tell pacemaker the address of all the clone children containers that get created.
>> The only way I can see something like this being possible is if the resource agent set an attribute on the clone child when the child was started.
>>
>> Is there any way to accomplish this? Or will I have to create separate resources for every single container? If this isn't possible, would this be considered as a future feature?
>>
>> Thanks
>>
>> -Patrick
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