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Proxmox High Availability by Simon M.C. Cheng

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Network fencing with a Cisco switch via SNMP

As we have mentioned before, we cannot enable the HA function if we don't have fencing devices on our cluster. When we check the HA service status, it gives an empty result, which means that the HA function is not enabled:

Network fencing with a Cisco switch via SNMP

The HA-enabled VM creation process will be introduced in the next chapter. Let's take a look at what will happen if we try to enable HA on a VM at this point:

Network fencing with a Cisco switch via SNMP

This error message simply tells us that when we try to enable HA on a VM, the HA service is not available, which causes error. The ...

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