Kubernetes-With-Ansible

Configure the system in an IaC way to automate the deployment of multiple servers.

• Written in YML format, easy to use and maintain

• Use SSH to communicate with remote server groups

• No need to install intermediate agents in remote server groups

Based on the above characteristics, we can quickly deploy the Kubernetes Cluster through Anisble.

Features

OS Distributions

• Ubuntu
  • 20.04

CNI (Container Network Interface)

• Flannel
  • VXLAN
  • host-gw
• Calico

CRI (Container Runtime Interface)

• Docker
• containerd
• cri-o

ToolBox

Initialize Cluster

• Support single master control plane - ansible-playbook -i hosts build-k8s-cluster.yaml -K
• Support high available control plane - ansible-playbook -i hosts build-ha-k8s-cluster.yaml -K

Add worker/master node dynamically

• worker - ansible-playbook -i hosts add-worker-node.yaml -K
• master

Cleanup Cluster

• Reset the cluster - ansible-playbook -i hosts reset-cluster.yaml -K

Zero Downtime Upgrade

• kubeadm
• Replace CRI

Prerequisite

• Edit hosts and group_vars/all.yaml as your desired