topic Re: Changing cluster VIPs in StoreVirtual Storage

Changing cluster VIPs

oikjn — Tue, 03 Apr 2012 22:39:05 GMT

I'm doing a makeover of our iscsi network layout and it is going to involve the changing IPs of both nodes and VIPs. Has anyone ever done this?

I assume I can just add an additional VIP to each cluster and simply retarget my initiators accordingly? If so, can I do a swing migration where I have both VIPs active for a period?

As for changing the IPs of each node... is there a good way? Can I simply change them at the console and have the cluster figure out the change or do I have to remove the node from the cluster/mgt group frist? I would like to avocie having to do a bunch of re-stripes if possible but if its the only way its the only way.

Re: Changing cluster VIPs

Hiren N Dave — Wed, 04 Apr 2012 06:34:24 GMT

You can change both IPs from CMC, your CMC host should be able to access both networks so after change of IPs, CMC can discover it.

Rgds,
Dave

Re: Changing cluster VIPs

oikjn — Mon, 09 Apr 2012 16:43:53 GMT

Dave,

I wasn't too worried about access from the CMC if I change the IP (say from 10.0.0.1 to 10.0.2.1).

What I'm more concerned about is if I can go from 10.0.0.1 to having that AND 10.0.2.1 at the same time.

Re: Changing cluster VIPs

Bryan McMullan — Mon, 16 Apr 2012 15:07:51 GMT

Did this back in 8.1 and I didn't run into issues. I was staging the IP's before we did a site move and IP redesign.

When you add the VIP to the cluster, ping it and ensure you get a response. Add a new test volume on a test machine and point it to only the new VIP. You should be able to access it just fine.

The big thing will be repointing all of your initiators/discovery portals.