пятница, 30 мая 2014 г.

proxmox: HA, fencing

Fencing is vital for Proxmox to manage a node loss and thus provide effective HA. Fencing is the mechanism used to prevent data incoherences between nodes in a cluster by ensuring that a node reported as "dead" is really down. If it is not, a reboot or power-off signal is sent to force it to go to a safe state and prevent multiple instances of the same virtual machine run concurrently on different nodes.


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