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Re: [Linux-cluster] Configuring failover time with Red Hat Cluster



That's a *very* old document. it's from 2003 and refers to RHEL2.1 .. which I sincerely hope you weren't planning to implement.

Before you do anything more I recommend you read the documentation for the actual version of clustering you are going to install

https://access.redhat.com/knowledge/docs/Red_Hat_Enterprise_Linux/

Chrissie

On 05/07/11 12:32, Parvez Shaikh wrote:
Hi all,

I was trying to find out how much time does it take for RHCS to detect
failure and recover from it. I found the link -
http://www.redhat.com/whitepapers/rha/RHA_ClusterSuiteWPPDF.pdf

It says that network polling interval is 2 seconds and 6 retries are
attempted before declaring a node as failed. I want to know can we tune
this or configure it, say instead of 6 retries I want only 3 retries.
Also reducing network polling time from 2 seconds to say 1 second (can
it be less than 1 second, which I think would consume more CPU)?

Also I have a script resource and I see it invoked with status argument
after every 30 seconds, can we configure that as well?

Failover also involve fencing, any pointers on how can we control /
configure fencing time would also be useful,I use bladecenter fencing,
IPMI fencing as well as UCS fencing.

Thanks,
Parvez



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