Deploy multi node k8s cluster with KIND in 15mins

Kind Logo

KIND ( Kubernetes in Docker ) is a tool for running local Kubernetes clusters using docker container nodes . KIND is primarily designed for testing Kubernetes itself, but may be used for local development or CI

Installation of KIND

To install KIND we need need at least GO1.14 and docker

• Install GO1.14

Install go 1.14 with the following commands .
NOTE:- If you have previously installed a lower version of GO , delete /usr/local/go folder completely 
root@prasanta:~# wget “https://dl.google.com/go/$(curl https://golang.org/VERSION?m=text).linux-amd64.tar.gz"
root@prasanta:~# sha256sum go1.14.2.linux-amd64.tar.gz
root@prasanta:~# tar -xvf go1.14.2.linux-amd64.tar.gz
root@prasanta:~# sudo chown -R root:root ./go
root@prasanta:~# sudo mv go /usr/local
Now login with root user and add all the env variables for GO to the .bashrc 
export GOROOT=/usr/local/go
export GOPATH=$HOME/go
export PATH=$GOPATH/bin:$GOROOT/bin:$PATH
root@prasanta:~# go version  
go version go1.14.2 linux/amd64
root@prasanta:~#

• Install KIND

root@prasanta:~# GO111MODULE="on" go get sigs.k8s.io/kind@v0.8.0
root@prasanta:~# kind version
kind v0.8.0 go1.14.2 linux/amd64
root@prasanta:~#

Create multi node cluster

In my previous post , I used microK8s to create single node local k8s cluster . However with KIND its very easy to create multi node cluster.

MicroK8s Kubernetes Single Node Cluster

• create single node cluster without any config change . Just use the below command

kind create cluster 

kind create cluster

Get the clutser and nodes information by the below commands

get the nodes and cluster information

• Create multi node cluster

we need to create a yml config file which represents two worker nodes and one control-plane nodes

kind: Cluster
apiVersion: kind.x-k8s.io/v1alpha4
nodes:
- role: control-plane
- role: worker
- role: worker

Pass the config file to create cluster command

kind create cluster --config kind-config.yml

multi node cluster

Now you can see two worker nodes created with one control-panel

root@prasanta:~# kind get nodes 
kind-worker
kind-control-plane
kind-worker2

This post is referring below pages

kubernetes-sigs/kind

kind