[ClusterLabs] Antw: Re: 2-Node Cluster Pointless?

[Alex Bruneau]

If your 1 node cluster hits a split brain situation, you have got bigger problems!

Unless you can guarantee that a cluster can not encounter a split brain (to the same degree a 1 node cluster can!), any cluster solution worth installing should have a robust fencing method. Preferably more than one, really.

Therein lies the true value: what happens when something really messes up? How much do you really want to drive to the DC at 3am?

On April 18, 2017 1:36:21 PM EDT, Dimitri Maziuk <dmaziuk at bmrb.wisc.edu> wrote:
>On 04/18/2017 02:47 AM, Ulrich Windl wrote:
>
>> IMHO: a valid cluster software works starting at 1 node, then per
>induction
>> also for n+1 nodes.
>
>I'm not sure what a valid fencing configuration would be in a one-node
>cluster, and since -- all together now -- YOU HAVE TO HAVE FENCING!..
>Perhaps you should consider a different definition or different cluster
>software.
>
>Oh, wait...
>-- 
>Dimitri Maziuk
>Programmer/sysadmin
>BioMagResBank, UW-Madison -- http://www.bmrb.wisc.edu

-- 
Sent from my Android device with K-9 Mail. Please excuse my brevity.
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