Deploy Containerd, Kubernetes, Calico, MetalLB for development ONLY

Overview

This is not a deployment project, but simply my tooling for doing development work. I don't feel the world needs yet another K8s deployment system, however, I need something simple and understandable for my own development which involves contribution to Istio project and the cloud native ecosystem. I wrote the Ansible code in about an hour so its not great, and is probably buggy. If you submit PRs to fix bugs, I will accept them. PRs for features may not be accepted. Please slack me if you are thinking of adding anything complex, so you don't waste your time :)

This code deploys the following:

containerd
Kubernetes
Calico
MetalLB

Please read the license. There is ABSOLUTELY NO WARRANTY. If you run these playbooks on an existing cluster, they may eat your system.

Directory Layout

Directory	Purpose
K8s-v1.14	deploy K8s v1.14 with kubeadm AIO
K8s-v1.17	deploy K8s v1.17 with kubeadm AIO
K8s-v1.18	deploy K8s v1.18 with kubeadm AIO
K8s-v1.19	deploy K8s v1.19 with kubeadm AIO
ansible	Deploy a control plane and a bunch of workers using an ansible playbook with kubeadm

Using Ansible

Prereqs

Ensure you have passwordless sudo setup on every node in your inventory.
Do not run as user root.
Instead run as your local user.
Ensure containerd 1.3.3 or later is installed. This tooling does not depend on Docker, only containerd from ubuntu. You may be able to install containerd with ansible-playbook -f setup-containerd.yml. This may or may not work. I have not done a final validation of my system from initial deployment to determine if the code is correct.

Usage

Copy the yaml files form the K8s-v1.y directory to your home directory.
Modify the inventory with the ip addresses of your machines.
Modify the advertise address to your control plane IP address in onprem-1y.yaml.
Run the do.sh script with -c create or -c destroy.