How to force shutdown a specific XCP-ng host without migrating VMs (with HA enabled)
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Hi everyone,
I have an XCP-ng pool with High Availability (HA) enabled. Normally, when I issue a shutdown command on a host (either via xe host-shutdown or from Xen Orchestra), the system automatically starts migrating all VMs to other hosts in the pool — which makes sense for HA.
However, in my case, I’m integrating the hosts with a central UPS monitoring system (NUT), and during a power outage, I need to force a host to shut down immediately — without triggering VM migrations, even if HA is currently active.
Is there any CLI command or parameter that allows a clean, immediate shutdown of a specific host without migration attempts, or any way to temporarily suppress HA’s automatic evacuation logic for a given shutdown action?
I’m aware that disabling HA entirely (xe pool-ha-disable) before shutdown would work, but I’m looking for a faster or more direct way, ideally per-host, not affecting the whole pool.
Any suggestions or best practices for this type of emergency power management setup?
Thanks in advance!
— Samuel Olavo
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@samuelolavo Stop the VMs ahead of your host shutdown; gracefully and have "auto power on" enabled on these so when your pool master (and slaves) come back online the VMs start on their own.
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Host shutdown with force flag should shutdown the VM, IIRC.
