k3s

Intro

Kubevirt.io is a (CNCF) project to make it possible to run virtual machines as containerized workloads on a k8s cluster. We'll have a look at it by deploying it to a Rancher k3s cluster and spinning up a Debian guest VM. 

We're using version v0.34.2 of Kubevirt and a three node 1.19.3+k3s2 cluster on bare metal.  

The story so far

In the first part (part1) we set up and provisioned three servers to serve as nodes in the cluster. We have a virtual ip managed by Keepalived and a HA etcd cluster that we will be using as external datastore for the k3s cluster. Some other stuff was installed and configured using ansible as well; we have docker installed, though in principle we could have simply let k3s use the default containerd.

Introduction

We are going to setup a Kubernetes cluster on bare-metal. Specifically a HA instance of Rancher's k3s using etcd and a virtual ip on three small form factor Thinkcentre machines. The main purpose is to create a simple home lab to explore Kubernetes, do local development and also to host several in-house workloads. The underlying OS is Debian Buster. We'll also look at Ansible to do the initial provisioning of the servers. 

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