[Linux-cluster] really reliable?

[Finnur Örn Guðmundsson]

Ryan Golhar wrote:
> Hi all,
>
> Is redhat cluster suite really reliable?  I've been having so much 
> trouble getting a cluster up and running, I'm beginning to second 
> guess my decision to use this software stack.
>
> I have 3 nodes (eventually 10) running and set up.  The fencing method 
> is by a brocade fibre switch.  The ultimate goal of this cluster is to 
> shared a SAN connected by fibre.
>
> I've installed just the bare minimum (before even getting to GFS) to 
> test the cluster software.  Just starting cman cluster services fails 
> on two of the nodes.
>
> Even when I try to reboot the nodes, I can't because the whole system 
> hangs on various processes that don't ever shut down.  I have to 
> physically reboot these boxes.
>
> The logs fill up with errors about not being able to connect to cman, 
> etc.
>
> I've been at it for awhile now and am not sure this is the best route 
> anymore.
>
> Ryan
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Hi Ryan,

I've got around 5 RHEL 5.{1 2 3} clusters running (3 of them are running 
Oracle, other NFS/MySQL) with out any issues at all. However all of 
these are 2 node clusters.

If you are having some issues you might want to talk to Red Hat 
regarding those and get them sorted (if you have a support contract 
anyway).

Most of my errors have been with iptables and mis-configured TKO for my 
Quorum heuristics ;)

Bgrds,
Finnur