Kubernetes Multi Node Cluster Setup step by step on LocalMachine

Hi Everyone,

In this video We will learn how to create setup multi node kubernetes cluster in your our local machine

Here I have taken 2 ubuntu machines for kubernetes cluster setup demo.

In the both machine I installed Docker, Kubeadm, Kubelet, Kubectl

Then I made one machine as a kubernetes master and other one for as node.

Download Vagrant and VirtualBox Softwares : 

Vagrant Software Link

VirtualBox Software Link

Putty Software Link

vagrant installation:

   check for powershell version using the below command 

    $PSVersionTable.PSVersion   OR get-host

    if your powershell version is less than 3 then you have to upgrade your powershell first then install

        https://www.microsoft.com/en-us/download/details.aspx?id=54616

        

3. Download Scripts from Kubernetes-Files  [or you can follow the below steps]

Step1 :

Create an folder (Ex: kubernets-prac ) inside that create an file with name Vagrantfile

paste the below content...[It will download and create 2 VMs in virtual box]

#Vagrant File Content:

Vagrant.configure("2") do |config|

    config.vm.boot_timeout = 500

  config.vm.define "k8smaster" do |k8smaster|

    k8smaster.vm.box = "bento/ubuntu-16.04"

    k8smaster.vm.network "private_network", ip: "192.167.10.70"

k8smaster.vm.hostname = "k8smaster"

k8smaster.vm.provider "virtualbox" do |vb|

      vb.memory = "2048"

  vb.name = "k8smaster"

      vb.cpus = 2

      vb.customize ["modifyvm", :id, "--cableconnected1", "on"]

    end

k8smaster.vm.provision "shell", inline: <<-SHELL

      sudo swapoff -a

      sudo echo "192.167.10.70 k8smaster" >> /etc/hosts

  sudo echo "192.167.10.71 k8snode1" >> /etc/hosts

    SHELL

  end

  config.vm.define "k8snode1" do |k8snode1|

    k8snode1.vm.box = "bento/ubuntu-16.04"

    k8snode1.vm.network "private_network", ip: "192.167.10.71"

k8snode1.vm.hostname = "k8snode1"

k8snode1.vm.provider "virtualbox" do |vb|

      vb.memory = "2048"

  vb.name = "k8snode1"

      vb.cpus = 2

      vb.customize ["modifyvm", :id, "--cableconnected1", "on"]

    end

k8snode1.vm.provision "shell", inline: <<-SHELL

      sudo swapoff -a

      sudo echo "192.167.10.70 k8smaster" >> /etc/hosts

  sudo echo "192.167.10.71 k8snode1" >> /etc/hosts

      

    SHELL

  end

end

Step2 : Login into those machines

 

             Master1 :

       Node1:

                    

                      

Username : vagrant

Password : vagrant

Step 3: Copy and install the below script in both machines

#kube-installation.sh File Content:

#!/bin/bash

echo "installing docker"

apt-get update

apt-get install -y \

    apt-transport-https \

    ca-certificates \

    curl \

    software-properties-common

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | apt-key add -

add-apt-repository \

   "deb https://download.docker.com/linux/$(. /etc/os-release; echo "$ID") \

   $(lsb_release -cs) \

   stable"

apt-get update && apt-get install -y docker-ce=$(apt-cache madison docker-ce | grep 17.03 | head -1 | awk '{print $3}')

echo "installing kubeadm and kubectl"

apt-get update && apt-get install -y apt-transport-https

curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -

cat <<EOF >/etc/apt/sources.list.d/kubernetes.list

deb http://apt.kubernetes.io/ kubernetes-xenial main

EOF

apt-get update

apt-get install -y kubelet kubeadm kubectl

#chmod +x kube-installation.sh

# sudo sh kube-installation.sh

Step 4: 

Now we have to make one vm as master other one as node

Execute the below commands in master node

kubeadm init --pod-network-cidr=192.168.0.0/16 --apiserver-advertise-address=192.167.10.70

you will get join token like this, you have to execute this command in the node1 

after you execute the above command in the node1, then you have to execute the below commands in the master  node

# Here you have 2 option , either you can run in root user or 

# If you want use kubernetes in regular user you have to execute these below # commented lines

# To start using your cluster, you need to run the following as a regular user:

# mkdir -p $HOME/.kube

# sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config

# sudo chown $(id -u):$(id -g) $HOME/.kube/config

# kubectl apply -f https://docs.projectcalico.org/manifests/canal.yaml

# or execute the below 2 commands

export KUBECONFIG=/etc/kubernetes/admin.conf

kubectl apply -f https://docs.projectcalico.org/manifests/canal.yaml

Now check nodes status using kubectl get nodes command in the master node:

if you get status is ready then your good to go start with kubernetes..

Watch Video completely then try ..

Thanks,

Tharun.K

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