Local Kubernetes setup

Generally for local setup people use minikube , basically minikube is a lightweight Kubernetes implementation that creates a single-node Kubernetes cluster on your local machine. Minikube is also good in testing and debugging Kubernetes applications.

There are many reasons for using minikube:-
1. It is easy setup in windows, macOS, linux system with few commands that we see further in the blog. Once it is installed, you can start a Kubernetes cluster with a single command.
2. It is portable and lightweight.
3. It has some advanced features such as LoadBalancer, filesystem mounts, FeatureGates, and network policy.
4. Deploy as a VM, a container, or on bare metal.

Prerequisites for installing Minikube

• Virtualization Software: Choose one of the following:

  • VirtualBox (Windows, macOS, Linux)

  • Hyper-V (Windows)

  • Docker (Windows, macOS, Linux)

  • KVM2 (Linux)

• Hypervisor Driver: Install the corresponding driver for your virtualization choice.

• Kubectl: Install and configure the Kubernetes command-line tool (kubectl).

• Internet Connection: Ensure an active internet connection for downloads.

• Supported OS: Minikube works on Windows, macOS, and Linux.

• Modern CPU: Ensure your CPU supports virtualization technology.

• Adequate Resources: Have enough RAM and disk space for Minikube and workloads.

• Administrative Privileges: Some drivers may require elevated permissions (e.g., sudo on Linux).

Warning:- If you are trying to use 22.4 version of Ubuntu from AWS then may be this installation shows error, so try to use 20.4 to avoid such error.

Step 1- Update your Linux system

sudo apt update

Step 2 - Install the required package

sudo apt install -y curl wget apt-transport-https

Step 3 - Install the docker

sudo apt install -y docker.io

sudo systemctl enable --now docker

sudo usermod -aG docker $USER && newgrp docker

Then reboot the system by "sudo reboot"

Step 4- Install minikube

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

Make it executable and set the path

chmod +x minikube
sudo mv minikube /usr/local/bin/

Step5- Start the minikube

minikube start --driver=docker

Step7 - Check Cluster status

minikube status

you can also use kubectl for intracting with you cluster

sudo snap install kubectl --classic
kubectl get nodes

Check the version of kubectl

kubectl version

Creating 2 different pods and doing some hands-on

vim abhi.yml

kind: Pod                              
apiVersion: v1                     
metadata:                           
  name: abhi                  
spec:                                    
  containers:                      
    - name: c00                     
      image: ubuntu              
      command: ["/bin/bash", "-c", "while true; do echo Hello-Bhupinder; sleep 5 ; done"]
    - name: container2
      image: ubuntu
      command: ["/bin/bash", "-c", "while true; do echo Second Container is still running; sleep 3 ; done"]
  restartPolicy: Never

vim sid.yml

paste the yml code sid.yml

then follow some commands

kubectl apply -f sid.yml

kubectl apply -f abhi.yml

kubectl get pods

for deleting the POD

kubectl delete pod sid

For cheking the logs

kubectl logs -f abhi

for container logs

kubectl logs -f abhi -c container2

For listing the IP of POD

kubectl exec abhi -c container2 -- hostname --i

finally, delete the abhi pod also

kubectl delete -f abhi.yml

In conclusion, finally, we have done installation and hands-on in minikube and Kubectl. If you find this content interesting the like it.