[Pacemaker] pingd location constraints

[Mike Diehn]

Simon,

I'm new to this, so if this doesn't help, don't despair - the more
experienced members will be along shortly.  :-)

Could it be that you need "stickyness?"
I think that's the term for the concept you are describing.

Also, if that's a two node cluster, have you defined cluster property
no-quorum-policy="ignore"?

Best regards,
Mike

On Mon, Dec 13, 2010 at 7:27 AM, Simon Jansen
<simon.jansen1 at googlemail.com>wrote:

> Hi,
>
> I'm trying to set up location contraints for my cluster, but I don't get
> them to work in the way that I want.
>
> The constraints should implement the following behaviour:
> - Normal operation
> msDRBD0 and resIP0 start on node1, msDRBD1 and resIP1 start on node2
> - Loss of network connection
> When the network connection to the public network is lost (tested with
> pingd resource) the corresponding DRBD resource should failover to the other
> node.
> When the connection comes back again the cluster should go into normal
> operation again.
>
>
> The pingd resource is configured as follows:
> primitive resPing ocf:pacemaker:pingd \
>   params host_list="node1 node2 standard-gateway" dampen="5s" interval="2"
> multiplier="10000" \
>   op start timeout="90" op stop timeout="120"
> where node1, node2 and standard-gateway stands for the corresponding IP
> adress.
>
> The definition of the location contraints to bind the DRBD partition to one
> node:
> location locDRBD0Node1 msDRBD0 \
> rule $id="locDRBD0Node1-rule" $role="Master" 1000: #uname eq node1
> location locDRBD1Node2 msDRBD1 \
> rule $id="locDRBD1Node2-rule" $role="Master" 1000: #uname eq node2
> location locIP0Node1 resIP0 \
> rule $id="locIP0Node1-rule" 1000: #uname eq node1
> location locIP1Node2 resIP1 \
> rule $id="locIP1Node2-rule" 1000: #uname eq node2
>
>
> I tried the following location constraint:
> location locDRBD0Ping msDRBD0 rule $role=Master -inf: not_defined pingd or
> pingd lte 10000
>
> But with this constraint the cluster does not go into normal operation
> again.
>
>
> Maybe someone has implemented an assimilable configuration.
> Thanks for any answers.
>
> --
>
>
> Regards,
>
> Simon Jansen
>
>
> ---------------------------
> Simon Jansen
> 64291 Darmstadt
>
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>


-- 
Mike Diehn
Senior Systems Administrator
ANSYS, Inc - Lebanon, NH Office
mike.diehn at ansys.com, (603) 727-5492
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