Skip to content

Latest commit

 

History

History
193 lines (106 loc) · 5.05 KB

README.md

File metadata and controls

193 lines (106 loc) · 5.05 KB
Raw

k8s-installation-ubuntu

enter image description here

About...

This repository is used to create Kubernetes Cluster using 8 simple steps on bare VM's

Table of Contents

What are the pre-requisites ?

What are the VM's provisioned ?

Note: We are not going to create any VM's during this process. User is expected to have VM's before proceeding with this repository

Below is the example configuration that we are going to refer through out this repository.

Name IP OS RAM CPU
k8s-master 100.10.10.100 Ubuntu 18.04 4GB 4
k8s-worker-1 100.10.10.101 Ubuntu 18.04 16GB 4
k8s-worker-2 100.10.10.102 Ubuntu 18.04 16GB 4
k8s-worker-3 100.10.10.103 Ubuntu 18.04 16GB 4

How to deploy kubernetes cluster ?

Checkout the code (git clone https://github.com/SubhakarKotta/k8s-installation.git)

Step 1

Update host names for all nodes

  • 100.10.10.100 (k8s-master)
  • 100.10.10.101 (k8s-worker-1)
  • 100.10.10.102 (k8s-worker-2)
  • 100.10.10.103 (k8s-worker-3)

Unix Command!!!

$ nano /etc/hostname

Step 2

Copy k8s-installation-ubuntu folder to all master/worker nodes

  • 100.10.10.100 (k8s-master)
  • 100.10.10.101 (k8s-worker-1)
  • 100.10.10.102 (k8s-worker-2)
  • 100.10.10.103 (k8s-worker-3)

Example copy to root folder and execution permissions can be applied by executing the below command.

Unix Command!!!

$ chmod +x -R k8s-installation-ubuntu

Step 3

Execute the below script on all master/worker nodes

  • 100.10.10.100 (k8s-master)
  • 100.10.10.101 (k8s-worker-1)
  • 100.10.10.102 (k8s-worker-2)
  • 100.10.10.103 (k8s-worker-3)

enter image description here

Before executing the below script please don't forget to change the IP's and Host Names as per your requirements in the below script

Unix Command!!!

$ k8s-installation-ubuntu/provisioning/prerequisites/install.sh

Step 4

Reboot all master/worker nodes

  • 100.10.10.100 (k8s-master)
  • 100.10.10.101 (k8s-worker-1)
  • 100.10.10.102 (k8s-worker-2)
  • 100.10.10.103 (k8s-worker-3)

Unix Command!!!

$ reboot

Step 5

Execute the below script only on master nodes

  • 100.10.10.100 (k8s-master)

Unix Command!!!

$ cd k8s-installation-ubuntu/provisioning/vm-master

$ ./install.sh

Step 6

Execute the below script on all worker nodes

  • 100.10.10.101 (k8s-worker-1)
  • 100.10.10.102 (k8s-worker-2)
  • 100.10.10.103 (k8s-worker-3)

enter image description here

Unix Command!!!

$ kubeadm token create --print-join-command

Before executing the below script please don't forget to change the token in the script. We can get the token by running the above command on master node IP

Unix Command!!!

$ cd k8s-installation-ubuntu/provisioning/vm-worker

$ ./install.sh

Step 7

Execute the below script only on master node IP to install HELM

  • 100.10.10.100 (k8s-master)

Unix Command!!!

$ cd k8s-installation-ubuntu/provisioning/helm

$ ./install.sh

Step 8

Verify k8s-installation is success by executing below two commands to see all the nodes and pods.

Unix Command!!!

$ kubectl get nodes

$ kubectl get pods -o wide --all-namespaces

How to access Kubernetes Dashboard ?

The Kubernetes Dashboard can be accessed via the below URL with your master node IP with the same port 30070

http://100.10.10.100:30070/#!/overview?namespace=_all

How to install NFS Server ?

Here we are going use master node IP as NFS Server IP instead of configuring separate node.

Execute the below command only on master node IP to install NFS-Client-Provisioner.

Note: Please don't forget to change nfs.server in the below unix command with your master node IP configured.

Unix Command!!!

$ helm install stable/nfs-client-provisioner --name nfs-client-provisioner --set nfs.server=100.10.10.100 --set nfs.path=/mnt/storage --set storageClass.defaultClass=true

What are the addons provided ?

  • kubernetes dashboard
  • helm