[ClusterLabs] 2-Node Cluster Pointless?
lists at alteeve.ca
Mon Apr 17 14:50:32 EDT 2017
On 17/04/17 02:21 PM, Dimitri Maziuk wrote:
> On 04/17/2017 01:12 PM, Ian wrote:
>> No, I don't understand how it's relevant to the specific topic of avoiding
>> split-brains, either.
>>> Take a simple example of shared-nothing read-only cluster: all you need
>>> to know is that the daemon is bound to '*' and the floating ip is bound
>>> to eth0.
> In shred-nothing cluster "split brain" means whichever MAC address is in
> ARP cache of the border router is the one that gets the traffic. How
> does the existing code figure this one out?
That sounds like a use-case where a full HA cluster is overkill already.
In any case, it would be a tiny fraction of installs and would be
tangential to the 2v3+ node debate that this thread started with.
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