Jamie Nguyen’s Blog

Curious things I discovered about Ansible in Advent of Code

Sun, 11 Jan 2026 20:22:12 +0000

In December, I did my first Advent of Code (opens in new tab). I used Ansible, which is a terrible choice for programming challenges but that’s part of the fun!

Note

I gave myself these rules:

libvirt Networking Handbook

Wed, 09 Dec 2015 16:45:00 +0000

libvirt is an amazing tool for managing virtual machines. However, it can be difficult to know where to start because it’s so powerful and offers so many different possibilities.

Virtual networks are an area of libvirt that’s often confusing for new users. This motivated me to write the libvirt Networking Handbook to demonstrate the most common aspects of libvirt networking, whether running virtual machines on a dedicated server or within a home lab. Check it out and let me know what you think!

OpenSSL Certificate Authority

Tue, 02 Jun 2015 15:00:00 +0000

In 2013, I wrote a series of four blog posts describing how to act as your own certificate authority using the OpenSSL command-line tools. Interestingly, traffic to the series increased significantly after the Heartbleed vulnerability.

I’ve recently made many improvements and additions. The series is now available as a standalone document titled OpenSSL Certificate Authority.