Why a VM Clock Can Drift From the Host Clock
I ran sudo apt update in one of my lab VMs and got an error I'd never seen before: E: Release file for http://archive.ubuntu.com/ubunt...
Why Moving a VM Can Change Its Network Behavior
I moved a client's staging server between two Proxmox nodes on a Tuesday afternoon. Routine hardware refresh, nothing exciting. The VM c...
Why a VM Can Freeze Without Crashing
I hit Reset. About ten minutes later, I realized it was the dumbest thing I could have done. It was a Friday evening, and I had an Ubuntu V...
Why VMs Suddenly Restart
03:12:07. That was the last line in the log. The next line was stamped 03:14:51 , and it was a fresh boot message. Nothing in between. No...
How VM Snapshots Work
A few years back, I was testing a shady-looking WordPress plugin for a Fiverr client. He wanted to know if it was safe before installing it ...
How a Virtual Machine Gets Its CPU Time
A client of mine once messaged me at 11 PM, half-panicking, saying his VM "randomly stopped working properly." He was running a Wi...