How to Install Minikube on CentOS 8

In this article we are going to cover How to Install Minikube on CentOS 8 and deploy an app on Kubernetes cluster using Minikube.

Prerequisites

  • A copy of freshly installed CentOS 8 VM
  • Minimum of 2 GB RAM and 2 vCPUs
  • 20 GB hard disk space
  • Root privileges
  • A stable internet connection

What is Minikube in Kubernetes ?

Minikube creates a single node cluster inside a VM or Cloud Instance. It is good for beginners to learn Kubernetes since you don’t have to create a master and worker node to create a cluster and we can practice basic Kubernetes functions and can also install the Kubernetes dashboard on it.

Update the system packages on Centos 8

sudo dnf update -y

Execute the commands below to disable SELinux

setenforce 0
sed -i --follow-symlinks 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/sysconfig/selinux

#1.Install docker on Centos 8:

Add docker official Repository in CentOS 8

dnf config-manager --add-repo=https://download.docker.com/linux/centos/docker-ce.repo

Install docker on Centos 8:

dnf install docker-ce --nobest -y

Run following commands to start and enable docker service:

systemctl start docker
systemctl enable docker

Install firewallid on CentOS 8 if you don’t have:

sudo yum install firewalld

start firewalld and enable it to auto-start at system boot, then check its status:

sudo systemctl start firewalld
sudo systemctl enable firewalld
sudo systemctl status firewalld

Set the following firewall rules using firewall-cmd command

firewall-cmd --zone=public --add-masquerade --permanent
firewall-cmd --reload

Install “conntrack” package using following command, conntrack is the dependency for minikube setup:

dnf install conntrack -y

#2.Install kubectl on Centos 8:

Download kubectl binary with curl on Centos using below command:

curl -LO https://storage.googleapis.com/kubernetes-release/release/`curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt`/bin/linux/amd64/kubectl

Make the kubectl binary executable

chmod +x ./kubectl

Move kubectl to /usr/local/bin/kubectl directory

sudo mv ./kubectl /usr/local/bin/kubectl

To check kubectl version on Centos

kubectl version

#3.Download and Install minikube on CentOS 8

Download and Install Minikube on Centos 8 using below commands, To download latest minikube setup refer minikube official download page

curl -Lo minikube https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64

Make the minikube binary executable:

chmod +x minikube

Move minikube to /usr/local/bin/kubectl directory:

mkdir -p /usr/local/bin/

Install minikube on CentOS 8

install minikube /usr/local/bin/

To check minikube version on CentOS

minikube version

Output:

minikube version: v1.25.1
commit: 3e64b11ed75e56e4898ea85f96b2e4af0301f43d

To start Minikube run the command:

minikube start --driver=none

To Check the status of Minikube

minikube status

Output:

minikube
type: Control Plane
host: Running
kubelet: Running
apiserver: Running
kubeconfig: Configured

To stop a Kubernetes cluster, execute:

minikube stop

To check Minikube cluster information

kubectl cluster-info

Run below command to view cluster nodes:

kubectl get nodes

Output:

NAME       STATUS   ROLES                  AGE   VERSION
centos-s   Ready    control-plane,master   54s   v1.23.1

#4:Deploy an app on Minikube Cluster

Lets create deployment on Minikube cluster:

kubectl create deployment test-minikube --image=k8s.gcr.io/echoserver:1.10

Output:

deployment.apps/test-minikube created

To access test-minikube deployment run the below command:

kubectl expose deployment test-minikube --type=NodePort --port=8080

Output:

service/test-minikube exposed

To check deployment on minikube cluster

kubectl get pod

Output:

NAME                             READY   STATUS    RESTARTS   AGE
test-minikube-6bf648865d-gbxwg   1/1     Running   0          79s

To access service, run the below command:

minikube service test-minikube --url

Output:

http://165.227.192.46:30804
How to Install Minikube on CentOS 8 1
minikube

To delete service on minikube cluster using kubectl

kubectl delete service test-minikube

Output:

service "test-minikube" deleted

To delete deployment on minikube cluster using kubectl

kubectl delete deployment test-minikube

Output:

deployment.apps "test-minikube" deleted

To stop minikube cluster

minikube stop

Output:

* Stopping node "minikube"  ...
* 1 node stopped.

To delete minikube cluster

minikube delete

Conclusion:

In this article we have covered How to Install Minikube on Centos 8 and deploy an app on Kubernetes cluster using Minikube.

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Shweta Mamidwar

I am Shweta Mamidwar working as a Intern in Product Company. Likes to share knowledge.

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