Hi,

I think it's mostly depend on your exact setup, like if you have ceph or not, if you use a SAN, local storage, etc.

Example for me, I let the power cut the node. I don't try a safe shutdown.

Best regards,

Hi,

If I'm not mistaken, there's already information in the official documentation regarding maintenance (node and ceph).

As for the UPS (with Nut, for example), since it's not part of the Proxmox core but rather a modification of the server manager, I don't see what more Proxmox could recommend, as it's primarily the manager who will have to decide on the desired behavior.

This looks more like a risk assessment (by the manager) than a "general guideline" that Proxmox should provide.

For example, we host nodes/clusters in data centers where we cannot have the state of the UPS, so we prefer to let the nodes/cluster have a power cut than having a power cut when he's trying to shut down (we feel it's less dangerous that way).
For us we take the risk of the power cut because we use ceph (so we lose compute & storage at the same time) and have 2 PBS (1local 1remote), so we assume that the power cut won't harm data (if so, we use the backup) and we can just lunch the whole cluster after the power cut (we already have this event 1 time so we know it can survive a power cut).

Note: This is just my opinion

Best regards,