serviceguard and weblogic integration (WLI)

[Pankaj Khandar]

Hi,
Does serviceguard provide any process administration, where if the process goes down on one server, the process will automatically start on other server to make it highly available?
I have a WLI Scenario where i can;t run the same application process on multiple servers same time.

[Steven E. Protter · Accepted solution]

Shalom,

Yes.

Your first question is exactly what Service Guard does. With proper package configuration any process including WLI can be configured to run on one node, and if that node goes away, start on a passive node.

SEP

[Mel Burslan]

To the best that I know about weblogic, what you are looking for (i.e. highly available application) is already available without any additional software.

Serviceguard is more of a protection against server failures, rather than application failures. Of course it can be configured for your purpose too, but it would be like torching the whole house to burn a sheet of paper.

You need to understand, if an application goes down on one server, it might have gone down due to a number of things. Probability of server hardware going down among other things that might have gone wrong to make the application disappear is pretty low.

If all you need is something to watch over if an application is up on one server and if it dies, restart it on another, all you may need is the internal redundancy facility of weblogic. Or you might even check for this with a set of scripts running on your cluster servers. You need to understand that serviceguard does not provide non-stop functionality. There will be a time interval once the weblogic goes down and become unavailable for a period, before it could be started up on another server.

[Steven E. Protter]

Shalom,

SG is a tool to detect and deal with server failure.

If WLI fails but continues to run, it might not trigger a SG fail over.

You can however design a test script to check the state of WLI and integrate it into your SG cluster configuration.

SEP

[Michal Kapalka (mikap)]

hi,

in our company we have weblogic on the ServiceGuard installed, with the customer scripts it is without any problem running, and if the primary node go down, the secondary ( failover ) node start the package ( app ) again without any problem.

mikap

[Pankaj Khandar]

Thank you all.
This is very useful information.