On Nov 24, 2007, at 5:30 PM, Atanas Dyulgerov wrote:
Hi all,
I'm new to the Heartbeat. I'm running 2.0.8. My cluster
configuration is as follows:
master slave has been significantly improved since 2.0.8
please try a more recent version
- 2 nodes.
- I've configured a OCF DRBD master/slave resource.
- OCF Filesystem resource which starts on the master node.
- A specific service runs on the node where the filesystem resource
is mounted. This service runs with /etc/init.d script therefore its
class is LSB.
What I want to configure, and I don't know how is when the service
fails to promote the other(second) node DRBD resource to master,
mount the filesystem and run the resource on the second node. Very
common situation - if service fails on the first node to failover it
to the second. This is very easy to configure with <op id="1"
name="monitor" interval="10s" timeout="4s"/>. The heartbeat monitors
to service. If it fails, heartbeat reallocate the resource to the
other node.
However, the tricky part here is the fact that the service needs the
DRBD resource promoted and filesystem mounted on the second node.
How to move all resources on the other node if my service fails?
I can define filesystem and the service in a groups - this will move
both them on the second node. But I can't put DRBD resource in the
group because it is Master/Slave type.
So my question is how to promote the DBRD resource on the other node
when my service fails? What constraints should I set? Browsing the
web I wasn't able to find anything on this matter.
How to define an expression which says: "If my service has failed
decrease the score for role=master for this node."? or increase to
score for slave...
How to trigger an action if certain service has failed?
Any help would be appreciated a lot.
Thanks in advance.
Atanas Dyulgerov
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_______________________________________________
Linux-HA mailing list
[email protected]
http://lists.linux-ha.org/mailman/listinfo/linux-ha
See also: http://linux-ha.org/ReportingProblems
