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Joseph Mack PhD, High Performance Computing & Scientific Visualisation
LMIT, Supporting the EPA Research Triangle Park, NC 919-541-0007
Federal Contact - John B. Smith 919-541-1087 - smith.john@xxxxxxx
lvs-users-bounces@xxxxxxxxxxxxxxxxxxxxxx wrote on 03/02/2005 08:03:25
AM:
> As all 5 machines are pretty beefy, and i use LVS-dr, i wanted the
> balancers to also be realservers. I used the local node "feature"
> (why on earth is this called a feature),
we're up for suggestions. I don't like all of the names used
in LVS but haven't been able to think of anything better myself.
> If i add the VIP with noarp to the load balancer,
> hearthbeat would not
> be able to setup the VIP when it needed to become the loadbalancer,
> so is there any way to tell hearthbeat to toggle the noarp
> switch on the load balancers instead of adding/removing the VIP?
sure. It's a nightmare of scripts that will probably fail under some
condition you don't expect and will be impossible for someone else
to debug. An idle server is a small price to pay for robustity.
In the early days of LVS we thought it would be trivial to promote
a realserver to be a director when the director failed, by running
a few setup scripts. While simple in concept, it turned out that it
was simpler just to have a standby director just parked there
waiting to take over. Brute force and low tech usually win when
reliability is required.
Joe
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