[ClusterLabs] time taken for pcs resource create for IPAddr resource.

[Jan Pokorný]

On 14/06/17 21:52 +0200, Jan Pokorný wrote:
> On 15/06/17 00:12 +0530, ashutosh tiwari wrote:
>> Also wanted to know that is there a way to add multiple resources in a go,
>> presently we are doing the resource addition serially.
>> 
>> the command we use to create resources is
>> "pcs resource create resname ocf:abc:IPaddr ip=x.x.x.x cidr_netmask=32 op
>> monitor interval="0s"."
> 
> Yes, there's a way to instruct pcs to add resources in one go, at
> least from the perspective of the cluster (which is what matters),
> despite it compounds several manipulation steps (but they are just
> an accumulative preparation for the final propagation):
> 
>   pcs cluster cib tmp-cib.xml
>   pcs -f tmp-cib.xml resource create ...
>   pcs -f ...
>   pcs cluster cib-push tmp-cib.xml --config
>   # tmp-cib.xml temporary file can be deleted now
> 
>> Also we add some some colocation constraint.
> 
> You can enque such change before the final push using:
> 
>   pcs -f constraint colocation add ...

[oops]

  pcs -f tmp-cib.xml constraint colocation add ...

> 
> as well.
> 
> 
> To overcome multiple parallel sources of change mutually overwriting
> the desired final configurations in the "critical section" (between
> the initial fetch of the current cib and propagation of the
> predestined after-changes monolithic configuration), newer pcs [1]
> supports pushing just the differentials, but I am mentioning that
> more for the sake of completeness.
> 
> [1] http://lists.clusterlabs.org/pipermail/users/2017-February/005103.html
>     (see second item)

-- 
Jan (Poki)
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