Re: EM 10G Agents on Veritas Cluster

kay.malcolm@xxxxxxxxx wrote: 
I have EM10g installed on an RHL4 server.  The installation ran fine
and the agents now need to be placed on dev boxes for testing.  Our
dev/ua and production servers use Veritas Clusterware.  Has anyone
successfully deployed OMS on Linux and the agents in turn on servers
using VCS?  What happens during failover from one node to the other?
There doesn't seem to be much information about installing/setting up
agents on non Oracle Clusterware boxes.

I am just wondering how the agents will discover instances before,
during and after a failover.  Please advise.


I have several installations on AIX with veritas.

On that configuration (active-passive and not RAC) I bind the 10g agent to the virtual address (and not the phisical ones).
It switches with all the resources from one node to another so the rediscovery is not necessary.
I opted for an AGENT_HOME which switches with the agent to avoid the repository corruption due to incomplete xml uploads.
Maybe a smarter solution is to switch only the AGENT_HOME/sysman/emd but I have never tested it.

On a failover cluster on linux (with lifekeeper) I prefer to keep to agent always active (one for every node).
Of course the agent on the passive node see its resources always down so I placed it in blackout mode.

Of late I prefer the first configuration.
The most challenging part of registering the agent into veritas was to write a start/stop script not too stupid.

Regards

--
Fabrizio Magni

fabrizio.magni@xxxxxxxxxxxxxxx

replace mycontinent with europe
.