If you have ever had the task of troubleshooting a modern Linux machine, you have undoubtedly used journalctl to display log messages. The journal is the logging mechanism for systemd machines, and...

Role-based access control (RBAC) is the way that Azure secures access to its resources. With recent advancements in Azure Kubernetes Service (AKS), you are now able to use this same security mechan...

Python is one of the most popular programming languages today, and for good reason: It allows you to quickly develop powerful software in a very expressive and delightful way. Python is one of my f...

systemd is a great, but complex component. One of the things that I love about systemd is that it really empowers and enables the administrator/developer to really understand what is happening. Wh...

A complete binary tree is a really interesting data structure. It is the starting point of a heap sort and in this blog post I want to illustrate what a complete binary tree is and the properties o...

Without a doubt, one of my most-used commands in the terminal is xargs. This utility takes standard input and can dynamically build and execute commands. In this blog post I’ll show common usages o...

The following error message may be thrown when trying to start nginx: nginx: [emerg] SSL_CTX_use_PrivateKey_file(“/etc/ssl/private/cert1.key”) failed (SSL: error:0B080074:x509 certificate routi...

Writing code is hard. So is writing documentation. And I am a big fan of creating your own documentation. At this point in my life I’ve been writing documentation for a long time, both in a team a...

Did you know it’s possible to search the Kubernetes API reference docs right from kubectl? I had no clue until recently I learned about this pretty cool (and I think, not-so-well-known) feature. T...

In a recent blog post, I wrote about how to create Azure Key Vault Certificates with Let’s Encrypt as the Issuer CA. This is a great start to utilizing a non-partnered Certificate Authority to issu...