init script for Oracle VMs like Weblogic Server

[Tomas Olaj]

Hi,
My name is Tomas Olaj, and working for Directorate of Fisheries in Norway. We have deployed an ODA with virtualized environment; Dom0, Dom1 (ODA_BASE) and several WLS domains. If ODA_BASE domain is exposed to a failure/disaster, then graceful restart is almost impossible except using ILOM to restart system.

With a ODA VM; ODA_BASE need to be booted by a script run on Dom0. We have created a run level script for that. But how do we create a run level script for all our user VMs like WebLogic; best practices.

:)
With regards,
Tomas

[ErmanArslansOracleBlog]

When the ODA_BASE is up. You can start them using oakcli.
"oakcli start vm VIRTUAL_MACHINE_NAME" is enough for starting a virtual machine.

You can place this type of commands into /etc/rc.local. Thus will be executed after all the system services are started.

I could not find any best practices for that.

To stop , you can use oakcli stop vm VIRTUAL_MACHINE_NAME

you can use rc.local even for shutting down..
I didnt test it yet , but check the following ; it is nice if it s working..
http://crunchbang.org/forums/viewtopic.php?id=14453

Also, If you want to use rc.d runlevel scripts, prepare your "oakcli start vm "script in the same logic as you prepared for your  ODA_BASE.

[Tomas Olaj]

Thanks Arslan,

A short architecture description: an ODA running PROD db on node0 and TEST db on node1 (2 core licenced on each = 2 EE db licenses). WLS running cluster on both having shared repository. Small enteprise.

If ODA_BASE has an incident and crash, the WLS domains will have problem with the shared repository, and we have no graceful control of these domains from Dom0.

ILOM communicates with a framework to controll services on ODA. If we also want a "trigger" that communicate with an UPS to recognize a local power failure (if power outage, the UPS has approx. 15 minutes), it would be nice to understand how ILOM actually works in such a way that we can trigger a graceful shutdown of the ODA.