[Linux-cluster] Re: Severe problems with 64-bit RHCS on RHEL5.1

[Harri Päiväniemi]

Sorry,

if my email structure was someway messed up - I had to use our webmail
(Outlook web access), normally I use Evolution in SuSE...

Anyway, thanks for your comments, Denis.



-hjp

On Thu, 2008-04-17 at 09:43 +0200, denis wrote:
> Hi Harri,
> 
> Please consider using a smart mailclient which can wrap your mails.. It
> makes things a lot easier.
> 
> I have a 2 node cluster RHEL5.1 on 64bit (IBM Blades) configured which
> works well for me (so far).
> 
> Harri.Paivaniemi at tietoenator.com wrote:
> > 1. 2-node cluster. Can't start only one node to get cluster services 
> >up - it hangs in fencing and waits until I start te second node and
> >immediately after that, when both nodes are starting cman, the cluster
> >comes up.
> 
> For me fencing would hang for 3-4 minutes before I had properly
> configured fencing (with manual fallback), after adding manual fallback
> I no longer have this issue.
> 
> When a node is fenced / rebooted, every now and then it will fence the
> other node on restart. And if I shutdown and restart both nodes
> simultaneously they will fence like this (has happened 2 times on tests)
> 
> A boots quicker and establishes the cluster
> B fences A when it starts
> A fences B when it starts
> B boots and joins the cluster..
> 
> This was before I configured qdisk, and I have not yet tested this
> behaviour after qdisk was setup.
> 
> > 2. qdisk doesn't work. 2- node cluster. Start it (both nodes at the 
> 
> qdisk works well for me in a very similar setup. I have done manual
> fencing tests / hardboot tests, which didn't produce anything like you
> describe.
> 
> > 3. Funny thing: heuristic ping didn't work at all in the beginning 
> >and support gave me a "ping-script" which make it to work... so this
> >describes quite well how experimental this cluster is nowadays...
> 
> heuristic ping works fine for me out of the box..
> 
> Regards
> --
> Denis
> 
> 
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