[Linux-cluster] Re: Severe problems with 64-bit RHCS on RHEL5.1
denis
denisb+gmane at gmail.com
Thu Apr 17 07:43:42 UTC 2008
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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