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One thing that might be useful is to allow a given server in the chain to fail. For example, if you had a Proxmox (or other hypervisor) cluster, in the event that a single node fails to come up, you'd probably want everything else to still boot. Or maybe it would be easier if there was a separate category for VM vs. hypervisor?

Either way, neat project, and thank you for sharing.

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Thanks for the feedback! So would a tagging system be useful? Right now you can declare dependencies on a single server, but maybe we can have it depend on at least one of the machines in a tagged group booting up?

I could see a group being useful, yeah. Must have one of [server0, server1, server2] to continue. Though there is a lot of bleed-over when talking about hypervisors and the boot order of VMs, since hypervisors generally can handle that, at least on their own node.

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