Does Proxmox HA only work when a node is offline?

[l.newman]

Hi, looking into proxmox HA at the moment - our situation is we have a few critical VM's running across multiple clustered nodes. We'd like to be able to have HA on these so that if one of the VM's dies, it is brought online on another node automatically. Is that feasible or is it only if the node dies?
Thanks

 

[czechsys]

https://pve.proxmox.com/wiki/High_Availability

 

[l.newman]

That page doesnt 100% specify whether its it a node is offline or a service/vm that goes offline.
From what i can see it works like this: Node 1 and Node 2 have HA configured. VM 1, 2 and 3 are on node 1. Node 1 dies so VM's 1,2,3 spin up on Node 2.
What we want is rather than the whole Node dying - if VM 2 dies, then it gets spun up on the other node whilst VM 1 and 3 are still fine on node 1 - is that possible?

 

[waltar]

As long as the kvm process of that vm dies the vm will be automatically restartet if ha is defined for.
Otherwise if the os inside the vm hangs I strongly assume the vm is still recognized as running and not be restartet, in this case a service monitoring system will help.