[ClusterLabs] Sub‑clusters / super‑clusters - working :)

[Strahil Nikolov]

>Because Asterisk at cityA is bound to a floating IP address, which is held onone of the three machines in cityA. I can't run Asterisk on all threemachines there because only one of them has the IP address.
That's not true. You can use a cloned IP resource with 'globally-unique=true' which runs the IP everywhere, but the cluster determines which node to respond (conntrolled via IPTABLES) and the others never reply.
It's quite useful for reducing the time for failover.

Best Regards,Strahil Nikolov
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