Kubernetes Cluster setup on CentOS 7 (bento/centos-7) – Part 2



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Guide for installation instructions – https://jhooq.com/15-steps-to-install-kubernetes-on-bento-centos7/

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This tutorial is for the ones who want to try out the Kubernetes installation on CentOS 7.

In this article, I have simplified the installation into 15 steps for installing Kubernetes on CentOS “bento/centos-7”

Prerequisites

1.Vagrant 2.2.7 or latest

2.VM VirtualBox (Oracle Virtual box)

We are going with two VMs here (Both the VMs will run on bento/CentOS 7) –

1.Master Node – 2 cpus, 2 GB Memory (Assinged IP – 100.0.0.1 )
2.Worker Node – 1 cpu, 1 GB Memory (Assinged IP – 100.0.0.2 )

Steps brief –
1.Start your vagrant box
2.Update /etc/hosts on both nodes(master, worker)
3.Install Docker on both nodes (master, worker)
4.Disable SELinux on both nodes(master, worker)
5.Disable CentOS firewall on both nodes(master, worker)
6.Disable swapping on both nodes(master, worker) .i.e. sudo swapoff -a
7.Enable the usage of “iptables” on both nodes(master, worker)
8.Add the Kubernetes repo to rum.repos.d on both nodes(master, worker)
9. Install Kubernetes on both nodes(master, worker)
10.Enable and Start Kubelet on both nodes(master, worker)
11.Initialize Kubernetes cluster only on the master node
12.Move kube config file to the current user (only run on master)
13.Apply CNI(container network interface) from kube-flannel.yml(only run on master)
14.Join master node run only on the worker node
15.Check the nodes status(only run on master)

References –
Kubernetes.io – https://kubernetes.io/

source
centos 7

Devin BARTON

I am an avid Linux lover and open source enthusiast. I use Ubuntu and believe in sharing knowledge. Apart from Linux, I love classic detective mysteries.

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