[Pacemaker] order constraint based on any one of many

[Vishal]

 From what I have read and understood a clone will run simultaneously  
on all the nodes specified in the config . I donot see how a clone  
will run once a resource group is started . You can alternatively add  
the clone to each group and ensure when either group starts , the  
clone runs with it.

On Aug 23, 2010, at 11:50 AM, Patrick Irvine <pirv at cybersites.ca> wrote:

> Hi,
>
> I am setting up a Pacemaker/Corosync/Glusterfs HA cluster set.
>
> Pacemaker ver. 1.0.9.1
>
> With Glusterfs I have 4 nodes serving replicated (RAID1) storage  
> back-ends and up to 5 servers mounting the store.  With out getting  
> into the specifics of how Gluster works, simply put, as long as any  
> one of the 4 backed nodes are running, all of the 5 servers will be  
> able to mount the store.
>
> I have started setting up a testing cluster and have the following:  
> (crm configure show output)
>
> node test1
> node test2
> node test3
> node test4
> primitive glfs ocf:cybersites:glusterfs \
>       params volfile="repstore.vol" mount_dir="/home" \
>       op monitor interval="10s" timeout="30"
> primitive glfsd-1 ocf:cybersites:glusterfsd \
>       params volfile="glfs.vol" \
>       op monitor interval="10s" timeout="30" \
>       meta target-role="Started"
> primitive glfsd-1-IP ocf:heartbeat:IPaddr2 \
>       params ip="192.168.5.221" nic="eth1" cidr_netmask="24" \
>       op monitor interval="5s"
> primitive glfsd-2 ocf:cybersites:glusterfsd \
>       params volfile="glfs.vol" \
>       op monitor interval="10s" timeout="30" \
>       meta target-role="Started"
> primitive glfsd-2-IP ocf:heartbeat:IPaddr2 \
>       params ip="192.168.5.222" nic="eth1" cidr_netmask="24" \
>       op monitor interval="5s" \
>       meta target-role="Started"
> primitive glfsd-3 ocf:cybersites:glusterfsd \
>       params volfile="glfs.vol" \
>       op monitor interval="10s" timeout="30" \
>       meta target-role="Started"
> primitive glfsd-3-IP ocf:heartbeat:IPaddr2 \
>       params ip="192.168.5.223" nic="eth1" cidr_netmask="24" \
>       op monitor interval="5s"
> primitive glfsd-4 ocf:cybersites:glusterfsd \
>       params volfile="glfs.vol" \
>       op monitor interval="10s" timeout="30" \
>       meta target-role="Started"
> primitive glfsd-4-IP ocf:heartbeat:IPaddr2 \
>       params ip="192.168.5.224" nic="eth1" cidr_netmask="24" \
>       op monitor interval="5s"
> group glfsd-1-GROUP glfsd-1-IP glfsd-1
> group glfsd-2-GROUP glfsd-2-IP glfsd-2
> group glfsd-3-GROUP glfsd-3-IP glfsd-3
> group glfsd-4-GROUP glfsd-4-IP glfsd-4
> clone clone-glfs glfs \
>       meta clone-max="4" clone-node-max="1" target-role="Started"
> location block-glfsd-1-GROUP-test2 glfsd-1-GROUP -inf: test2
> location block-glfsd-1-GROUP-test3 glfsd-1-GROUP -inf: test3
> location block-glfsd-1-GROUP-test4 glfsd-1-GROUP -inf: test4
> location block-glfsd-2-GROUP-test1 glfsd-2-GROUP -inf: test1
> location block-glfsd-2-GROUP-test3 glfsd-2-GROUP -inf: test3
> location block-glfsd-2-GROUP-test4 glfsd-2-GROUP -inf: test4
> location block-glfsd-3-GROUP-test1 glfsd-3-GROUP -inf: test1
> location block-glfsd-3-GROUP-test2 glfsd-3-GROUP -inf: test2
> location block-glfsd-3-GROUP-test4 glfsd-3-GROUP -inf: test4
> location block-glfsd-4-GROUP-test1 glfsd-4-GROUP -inf: test1
> location block-glfsd-4-GROUP-test2 glfsd-4-GROUP -inf: test2
> location block-glfsd-4-GROUP-test3 glfsd-4-GROUP -inf: test3
>
>
> now I need a way of saying that clone-glfs can start once any of  
> glfsd-1, glfsd-2,glfsd-3 or glfsd-4 have started.
>
> Any ideas.  I have read the crm cli document, as well of many  
> iterations of the clusters from scratch, etc.
>
> I just can't seem to find an answer.  can it be done?
>
> Pat.
>
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