Kubernetes on Budiman JoJo

How I Write Kubernetes Manifests

Wed, 22 Feb 2023 18:45:56 +0000

While tools like Helm and kustomize can significantly reduce the amount of manual Kubernetes manifests writing, it’s often impossible to completely avoid it (even (kustomization.yaml file is itself a Kubernetes manifest). For instance, you may need to create a basic ingress because the chart you’re using doesn’t provide a template for it, or generate a certificate for your domain with cert-manager. In this post, I’ll describe how I leverage VSCode snippets and yaml-language-server to write Kubernetes manifests.

How I GitOps Home Assistant Configurations

Thu, 04 Nov 2021 17:37:02 +0000

I always love the idea of GitOps, where everything I have in a git repo represents the current state of my application. But not everything are made for GitOps, so we have to sort of “make it work”. In this post, I will show you how I manage to GitOps my Home Assistant configurations. Spoiler, this is hacky and messy at the same time, so please bear this in mind before continuing.

Automating Kubernetes Nodes Reboot with Kured

Thu, 28 Oct 2021 16:05:01 +0000

Having an up-to-date Kubernetes node is important, especially security updates. Sometimes an update requires a reboot to take effect, and you don’t want to keep checking them manually. In this post, I will share about how I automate my Kubernetes nodes to reboot when necessary using Kured.

Variable Substitution in Flux GitOps

Wed, 27 Oct 2021 13:36:08 +0000

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.

Flux Secret Management with SOPS age

Sat, 23 Oct 2021 16:16:41 +0000

Following my previous post about Kubernetes management using Flux, this post will cover secret management using SOPS and age. SOPS is a tool to encrypt and decrypt text files while age is the encryption tool that is simple, modern, and secure.

How I Manage My Kubernetes Manifests Using Flux

Wed, 20 Oct 2021 18:45:56 +0000

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.