k8s-ansible

Introduction

In this project we will use ansible and kubeadm to create a high available kubernetes cluster with multi master node in Ubuntu 20.04 LTS and we will deploy kafka, zookeeper, prometheus, grafana and two simple python script to the cluster.

Requirements

We need three master node, two worker node, one loadbalancer node and a workstation.

All servers have 2 core CPU and 2GB RAM.

We create a private network so all server are reachabe for each other.

Ansible

the site.yaml playbook consists of 5 playbool

1. pre-requisites.yaml

Install pre requisties on all nodes.

2. haproxy.yaml

Insall and configure HAproxy on haproxy node.

3. setup-k8s-cluster.yaml

This playbook will install kubernetes cluster with three master and two worker.

4. deploy-manifest.yaml

Deploy kafka, zookeeper, prometheus, grafana and two simple python script to the cluster.

5. after-install

Remove shecan DNS from all cluster nodes.