[Linux-cluster] Virtual ips 'drifting' from one node to another

Bryn M. Reeves breeves at redhat.com
Wed Oct 17 07:56:30 UTC 2007


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Josh Gray wrote:
> I've read reports of people having trouble with virtual ip's that are
> controlled by the cluster suite coming up when they shouldn't on nodes and
> even to the point where multiple hosts will have the ip on them (looking at
> ip addr list) and the cluster doesn't realize it.
> 
> Has anyone seen this?  Any fixes you know of or ways to fight it?
> 

What sort of virtual IPs/cluster?

There are some problems with LVS routers & piranha (load-balancing
clusters) in the current released RHEL4 packages where VIPs are not
correctly deactivated when a service or an LVS router is shut down.

Versions prior to piranha-0.7.10-2 are not affected.

See these bugzillas:

https://bugzilla.redhat.com/show_bug.cgi?id=228530
https://bugzilla.redhat.com/show_bug.cgi?id=123342

There's a patch in comment #1 of the first bug that fixes this behavior.

Kind regards,
Bryn.
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