Chicago Gang History III

WordPress Migration from Pantheon to K8s. Saved client hundreds per month in hosting charges as website hit 80K visitors per month.

:: Kubernetes / K3s / Helm / Redis / MariaDB / Ansible / WordPress / Route 53 / Sendinblue

Ported second generation Chicago Gang History website from Pantheon to a multi-node K3s cluster on Digital Ocean, saving Zach over $400 a month in fees after an unexpected price hike from his hosting provider.

Deadsimple Wordpress in Kubernetes

2 minute read Updated

A microtutorial to run WordPress locally in Kubernetes under Docker.
How to install Wordpress with Bravada theme for local development in 8 steps. Tip: If this tutorial is too high-level for you, have a look here instead. Step 1: Install Dependencies Lens Docker docker Git git Kubernetes CLI kubectl K3D k3d Helm helm Watch watch Step 2: Clone Sources Clone WordPress Helm Chart from OSA Clone WordPress from Pantheon Systems Put them next to each other.

Self-Hosted Gitea on Vultr using K3s

13 minute read Published

Host your own Gitea server on Kubernetes with K3s and Vultr for $10/month.
Back in 2017 I decided to move my passion project After Dark off GitHub so I could have better repo usage insights. I was surprised to learn how much faster a self-hosted VCS was compared to GitHub. Not only was GitHub limiting the useful metrics I could capture they were actually slowing down my development! Which brings me back to one of if not the most important concepts I learned as a developer after watching a talk given by Paul Irish at Fluent Conf 2012.

Lens App Primer for Kubernetes with K3s

11 minute read Updated

A practical introduction to Lens with K3s and cert-manager.

Discovered a cool desktop app for managing Kubernetes clusters I want to share called Lens. In this tutorial I’m going to show you how to create a K3s cluster and use Lens metrics to introspect on the cluster. Finally we’ll use Lens to install cert-manager on your cluster for the purpose of issuing SSL certs.

WordPress K3s — Init Containers and Helm

11 minute read Updated

How to create a hardened WordPress installation in Kubernetes using Init Containers and Helm on MacOS.

Last week Pantheon dealt the final blow to the website I drove from 100 visitors up to 80,000 per month. By the time I heard the death knell we had a 10-day advance notice the price of hosting was increasing 1025% to $450/month.

I quickly spun up a Plesk instance on Digital Ocean and installed WordPress on a $10/month VPS but realized Plesk was too bloated for our needs and probably not going to cut the mustard in the scale department should traffic decide to climb.

After initially attempting to deploy Wordpress using the Helm chart by Bitnami via the App Marketplace in Rancher 2.5 I found the chart difficult to use, kept looking and eventually found a an alternative chart on a self-hosted VCS.

Like the Bitnami chart the independent chart includes optional database set-up. Unlike the Bitnami chart, however, the self-hosted chart also includes a Redis object cache, OpenID Connect authentication. It also builds a hardened WordPress Pod using WP CLI from scratch with Ansible inside an Init Container. And in this tutorial I’m going to show you how you install it on macOS with K3D.

K3D Load Balancing — MetalLB on Mac

8 minute read Published

How to workaround the Docker host network limitation on macOS using Kubernetes in Docker with K3s and MetalLB.

In this post I’m going to show you a neat little hack to get a bare metal load balancer called MetalLB working in K3s under Docker Desktop for Mac. Before you get started please follow the steps to set-up K3s using k3d with Rancher if this is your first time using Kubernetes. If you already have a K3D cluster running, we’ll be creating a new one for experimentation.

This hack allows Mac users running Kubernetes locally via Docker have it provide EXTERNAL-IP addresses from a pool of addresses so multiple K8s services can be run on the same port, namely 80 (http) and 443 (https), at the same time. Effectively this is a workaround for docker/for-mac/issues/155. Without this hack LoadBalancer IP addresses will show as <pending> or <none> in kubectl.

Let’s see how it works.

K8s on macOS with K3s, K3d and Rancher

12 minute read Published

How to install and run Rancher for Kubernetes on macOS using K3s and K3d.

In this post we’re going to take a quick look at how to run Rancher in a Kubernetes cluster locally on macOS for development and testing purposes. There are several different ways to run Kubernetes for local development. In this guide I’m going to focus on just one way: K3D.

K3D is a lightweight wrapper to run Rancher Labs' K3s in Docker. K3s is a certified Kubernetes distribution for edge and IoT applications with a small resource footprint and ARMv7 support. Like KiND, K3D uses a container runtime as opposed to a virtual machine — saving precious resources. Unlike KiND, K3D supports the ARM architecture and requires about 16x less RAM.

When you’re finished you’ll have a functional K3s Kubernetes cluster running on your Mac with Rancher UI for cluster management. This guide assumes you’ve never run Kubernetes before and, therefore, also serves as a practical starting point, though I won’t be going into detail about the nuts and bolts of Kubernetes.