On 19.03.2012, at 20:26, Florian Haas wrote:
> On Mon, Mar 19, 2012 at 8:14 PM, Mathias Nestler
> <[email protected]> wrote:
>> Hi everyone,
>>
>> I am trying to setup an active/passive (2 nodes) Linux-HA cluster with
>> corosync and pacemaker to hold a PostgreSQL-Database up and running. It
>> works via DRBD and a service-ip. If node1 fails, node2 should take over. The
>> same if PG runs on node2 and it fails. Everything works fine except the
>> STONITH thing.
>>
>> Between the nodes is an dedicated HA-connection (10.10.10.X), so I have the
>> following interface configuration:
>>
>> eth0 eth1 host
>> 10.10.10.251 172.10.10.1 node1
>> 10.10.10.252 172.10.10.2 node2
>>
>> Stonith is enabled and I am testing with a ssh-agent to kill nodes.
>>
>> crm configure property stonith-enabled=true
>> crm configure property stonith-action=poweroff
>> crm configure rsc_defaults resource-stickiness=100
>> crm configure property no-quorum-policy=ignore
>>
>> crm configure primitive stonith_postgres stonith:external/ssh \
>> params hostlist="node1 node2"
>> crm configure clone fencing_postgres stonith_postgres
>
> You're missing location constraints, and doing this with 2 primitives
> rather than 1 clone is usually cleaner. The example below is for
> external/libvirt rather than external/ssh, but you ought to be able to
> apply the concept anyhow:
>
> http://www.hastexo.com/resources/hints-and-kinks/fencing-virtual-cluster-nodes
>
As is understood the cluster decides which node has to be stonith'ed. Besides
this, I already tried the following configuration:
crm configure primitive stonith1_postgres stonith:ssh \
params hostlist="node1"
op monitor interval="25" timeout="10"
crm configure primitive stonith2_postgres stonith:ssh \
params hostlist="node2"
op monitor interval="25" timeout="10"
crm configure location stonith1_not_on_node1 stonith1_postgres \
-inf: node1
crm configure location stonith2_not_on_node2 stonith2_postgres \
-inf: node2
The result is the same :/
> Hope this helps.
> Cheers,
> Florian
>
Best
Mathias
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