Shutdown gracefully Red hat cluster with UPS

[kouyate Maury_1]

Hi,
I'm planning to secure my Linux cluster système (2HP DL380 G5 server and one MSA 1000 storage)with a UPS.I would like the UPS to shutdown gracefully the cluster if any electricity issue (light off).
I've heard that it's possible with server, but my système is a cluster.
Can somebody can help?

[Ivan Ferreira]

Probably, the UPS provider will give you an application to run a command/script.

In your script, use ssh to shutdown the other nodes, then shutdown the server itself.

[kouyate Maury_1]

Thanks Ivan,
but what about the storage?
I'm used to shutdown the storage physically, and also, the system is a cluster, normal steps to shutdown a cluster is to shutdown the servers first and than the storage.

[Ivan Ferreira]

Yes, that is true, but as far I know, the MSA does not have a shutdown/poweroff command on the CLI.