[Pacemaker] clusters on virtualised platforms

[Alex Samad - Yieldbroker]

> -----Original Message-----
> From: Digimer [mailto:lists at alteeve.ca]
> Sent: Thursday, 17 July 2014 2:02 PM
> To: The Pacemaker cluster resource manager
> Subject: Re: [Pacemaker] clusters on virtualised platforms
> 
> Don't confuse quorum and fencing (stonith), they serve different purposes.
> Basically, quorum is useful when things are working, fencing is required when
> things go wrong. So regardless of quorum disk, you still need to be able to
> fence. This requires that each VM be able to call the hypervisor and force a
> power off.

TA, yep got that, I was thinking and writing ..

> 
> Generally speaking, VM-based cluster nodes are good for learning, but not
> production. It adds a layer that isn't needed and in HA, simple should trump
> all else.

Yeah well, it's not really going to change for us, we are virtualised and I can't really see that changing. In fact I would presume you would see more of it.

Thanks
> 
> digimer
> 
> On 17/07/14 12:48 PM, Alex Samad - Yieldbroker wrote:
> > Hi
> >
> > I wonder if there Best practise or how to, on how to run clusters on say
> VMWare.
> >
> > I have built a 2 node cluster with 2 vm's I am hesitant to give rights to each
> machine to restart the other node. Plus I would have to install the vmware lib
> and....
> >
> > So what do other people do
> >
> > Quick search gives me
> > http://www.hastexo.com/resources/hints-and-kinks/fencing-vmware-
> virtualized-pacemaker-nodes << But I am not keen on doing that ..
> >
> > I am working on centos 6.5
> >
> >
> > Can I use a network resource to make quorum, ie Can the node can ping
> the dgw ?
> >
> > Thanks
> >
> >
> >
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> 
> 
> --
> Digimer
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