Variable Substitution in Flux GitOps

Sometimes there are values that you want to use multiple times in your manifest files. Usually, we define them using a config map or secret and we either mount them as a file or environment variable. This is easy if you don’t use GitOps and have a small amount of pods. Also, having a single configmap and secret will clean up a lot of mess out of your cluster, and this is what variable substitution will do for you. I find this really useful especially for sensitive information you don’t want people all around the world to see. In this post, I will show you how I do variable substitution using Flux GitOps tool.

How I Manage My Kubernetes Manifests Using Flux

GitOps is currently the most popular way to manage your services. It’s sort of what DevOps is but with Git. To put it in a simple way, it is a practice where you manage everything through git. Whatever you have in your git repository is what your cluster current state is. Because GitOps is so popular there are a lot of new tools focusing on GitOps right now, and Flux is one of them. In this post I will give you a glance on how I manage my Kubernetes manifests using Flux.

Raspberry Pi Media Server Series 4 - Setting Up Docker

This is the forth part of my Raspberry Pi Media Server series. If you haven’t read our previous part, here’s where we discussed setting up external drives on Raspberry Pi. In this part, we are going to setting up Docker on Raspberry Pi. Here’s what you will get if you follow through the end of the tutorial:

• Docker and Docker Compose installed
• Docker data will be in the external drives
• Systemd will only start Docker if external drives are mounted

Getting Started

Before we get our hands on setting up docker on our Raspberry Pi, let’s first do a system update. If you are on Manjaro, the command will be:

Raspberry Pi Media Server Series 3 - External Drives

This is the third part of Raspberry Pi Media Server series, if you haven’t read our previous part, here’s where we discussed securing SSH server on Raspberry Pi. In this post, I’m going to share how I setup external drives on my Raspberry Pi. Here’s a glimpse on my setup before you decided to read this entire lengthy page:

Raspberry Pi Media Server Series 2 - Secure Ssh

This is the second part of my Raspberry Pi Media Server series. On previous post, I wrote about installing Manjaro Linux ARM into my Raspberry Pi 4. Now, we are going to secure our SSH server on Raspberry Pi so that we can at least prevent brute-force attempt on our future home media server from the evil outside world. Securing SSH server is one of the most crucial part of every server that can be accessible on the internet.

Raspberry Pi Media Server Series 1 - Installing Manjaro

So you bought a Raspberry Pi and you don’t know what should you do with it. Well, in this series I want to share my way of using my Raspberry Pi. I bet you already guessed it right by reading the title. Yes, this is the first part of my Raspberry Pi Media Server series. Before I continue, here’s what I have for this project:

• A full set of 2GB Raspberry Pi 4 Model B
• ORICO 3.5 inch Dual Bay Aluminum Alloy USB3.0 Hard Drive Enclosure (9528U3)
• Two 1TB Hard Disk Drive
• A memory card reader