🛠️ Fix: Proxmox VM Not Starting Due to Node Hostname Mismatch

If you're facing an error like this when starting a Proxmox virtual machine:

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Then this guide will help you fix the issue by correcting the Proxmox node hostname mismatch between the static and transient hostnames.

If your system’s static hostname and transient hostname don’t match, Proxmox may look in the wrong directory and fail to find 200.conf, resulting in a VM start failure.

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Check Hostnames

Run the following:

hostnamectl

Example output:

Static hostname: khalid
Transient hostname: KHALID-DELL-730XD-PROXMOX

This mismatch causes Proxmox to look for the VM config under KHALID-DELL-730XD-PROXMOX, while the VM was created under khalid

Set all types of hostnames to the same value (khalid in this case):

sudo hostnamectl set-hostname khalid --static --pretty --transient

Then confirm:

hostnamectl

**Now your Proxmox VM should start successfully.

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