IT & Infrastructure

Servers, Linux, networking and the boxes everything else runs on.

• Guide2 August 2026

  Expanding an EC2 disk without downtime: EBS, partition and filesystem on Ubuntu and Amazon Linux

  Finding the volume ID, growing an EBS volume from the web console or the CLI, then connecting over SSH to extend the partition and the filesystem — ext4 on Ubuntu, XFS on Amazon Linux — plus the NVMe naming, the 2 TiB MBR limit and the growpart failure nobody explains.

• Guide2 August 2026

  Installing Node.js and npm on Ubuntu 20.04, 22.04 and 24.04

  Why apt gives you the wrong version, how to install Node with proper version management using nvm, fnm or NodeSource, and the systemd trap that catches everyone on their first deploy.

• Guide2 August 2026

  WireGuard on Ubuntu: dual-stack IPv4 and IPv6, split tunnelling, and why it breaks Android Auto

  Setting up a WireGuard server with working IPv4 and IPv6, adding clients, tunnelling a single application instead of the whole machine, and fixing the Android Auto disconnections that VPNs cause.