How To Setup A Three Node Kubernetes
Cluster For CKA: Step By Step
January 13, 2021 by Nijaguna Darshan Leave a Comment
A Kubernetes Cluster is a group of node or machines running together. At the
highest level of Kubernetes, there exist two kinds of servers, a Master and a
Worker node. These servers can be Virtual Machine(VM) or physical
servers(Bare metal). Together, these servers form a Kubernetes cluster and are
controlled by the services that make up the Control Plane.
If you are new to Docker & Kubernetes world, then check out our blog on
Kubernetes for Beginners to get an idea about the components and
concepts of Kubernetes.
In this blog, we will cover How to install and configure a three-node
cluster in Kubernetes which is the first topic in Kubernetes. We have a set of
Hands-on Labs that you must perform in order to learn Docker &
Kubernetes and clear the CKA certification exam. Cluster Architecture,
Installation & Configuration have a total weightage of 25% in the Exam.
There are 3 ways to deploy a Kubernetes cluster:
1. By deploying all the components separately.
2. Using Kubeadm.
3. Using Managed Kubernetes Services
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In this blog, we will be covering the following topics:
Installing Docker, Kubectl and Kubeadm Packages
Create a Kubernetes Cluster
Join Worker Nodes to the Kubernetes Cluster
Testing the Cluster
Prerequisites For Cluster Setup
Deploying three nodes on-premises can be hard and painful, so an alternate
way of doing this can be using a Cloud Platform for deploying them. You can
use any Cloud Platform, here we are using Azure Cloud. Before getting on with
creating a cluster make sure you have the following setup ready:
I) Create an Azure Free Account, as we will use Azure Cloud for setting up a
To create an Azure Free Account, check our blog on Create Free Trial Azure
II) Launch 3 Virtual Machines – one Master Node and 2 Worker Nodes. We