this post was submitted on 21 Jul 2024
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Is there a way to remotely boot into network activated recovery mode? Genuine question, I never looked into it.
For physical servers there are out of band management systems like Dell DRAC that allows you to manage the server even when the OS is broken or non existent.
For clients there are systems like Intel vPRO and AMD AMT. I have not used either of them but they apparently work similarly to the systems used on servers.
Ah neat, I'll look those up. Thanks a lot!
A expensive kvm card, or Pikvm for the home server.
At least for virtual servers, There has to be a cheaper software equivalent, as my cheap VPS allows this (via vnc) with no issues.
Virtual servers (as opposed to hardware workstations or servers) will usually have their "KVM" (Keyboard Video Mouse) built in to the hypervisor control plane. ESXi, Proxmox (KVM - Kernel Virtual Machine), XCP-ng/Citrix XenServer (Xen), Nutanix (KVM-like), and many others all provide access to this. It all comes down to what's configured on the hypervisor OS.
VMs are easy because the video and control feeds are software constructs so you can just hook into what's already there. Hardware (especially workstations) are harder because you don't always have a chip on the motherboard that can tap that data. Servers usually have a dedicated co-computer soldered onto the motherboard to do this, but if there's nothing nailed down to do it, your remote access is limited to what you can plug in. PiKVM is one such plug-in option.
Thank you for the explanation, I really appreciate it. Bystanders will probably too :)