[Linux-cluster] ip-tiebreaker quotes need explainging

Rick Rodgers rodgersr at yahoo.com
Mon Oct 2 03:52:38 UTC 2006


Thanks for replying to me especically on a Sunday. I was familiar with everything you 
said. The question concerned not being able to use the tiebreaker to form quarum on STARTUP.
Why is this? 

Also Lon sent me a URL  to a doc I need but it seems the URL is stale. Can you help
me? Here is the URL:


http://people.redhat.com/lhh/rhcm-3-internals.odt


Rick


----- Original Message ----
From: Isauro Michael Napolis <mnapolis at redhat.com>
To: linux clustering <linux-cluster at redhat.com>
Sent: Sunday, October 1, 2006 5:12:14 PM
Subject: Re: [Linux-cluster] ip-tiebreaker quotes need explainging

Hi,

The ip tiebreaker is primarily used during network split-brain
situations in a even numbered (2,4, etc.) cluster.  The ip tiebreaker
provides the extra vote (to form a quorum (50% + 1)) to determine who
should be the next/ new master. 

cheers,
Michael


On Sun, 2006-10-01 at 12:52, Rick Rodgers wrote:
> Can anyone explain why this is so. Why is it only used on maintaining
> qourum and not startup?
> 
> 
> "The IP tiebreaker is typically used to *maintain* a quorum after a node
> failure, because there are certain network faults in which two nodes may
> see the tiebreaker - but not each other.
> -- Lon"
> 
> 
> 
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