[ClusterLabs] just some basics
peljasz at yahoo.co.uk
Thu Jan 12 12:53:59 EST 2017
I'm going through some introductory stuff, reading about it
all and one, ok, a few questions come to mind.
I was hoping, before I find answers somewhere at end of the
docs someone here could quickly clarify:
It is one cluster per node, right? Not like, that a cluster
is denominated by hostname/IP and if a node has multiple
netIFs/IPs one could have multiple clusters (on that node)
as long as these use only unique node's netIF/IP ?
Would relying on IP type of resources only be safe? I'd
imagine there are some services/apps that, (when use
shared/distributed storage) without user interacting with
them do not need to be off (because do not lock/access
anything) and user could not (obviously) interact when that
IP is being off on a node.
These two questions I form having assumed that it's the
nodes/machines that are monitored and are declared
un/available(those IPs of nodes) and resources are simply
targets for an action the cluster would perform, and have
nothing to do with "un/available" decision making process -
or - I've got it wrong and should keep on reading(regardless
probably :)) ?
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