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Day 31 Task: Launching your First Kubernetes Cluster with Nginx running

Day 31 Task: Launching your First Kubernetes Cluster with Nginx running

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sutish pradhan
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Table of contents

🙏 Introduction:

In this blog, we will explore Minikube its feature & we will create a Cluster with Nginx

What is minikube?

Minikube is a tool that quickly sets up a local Kubernetes cluster on macOS, Linux, and Windows. It can deploy as a VM, a container, or on bare metal.

Minikube is a pared-down version of Kubernetes that gives you all the benefits of Kubernetes with a lot less effort.

This makes it an interesting option for users who are new to containers, and also for projects in the world of edge computing and the Internet of Things.

Features of minikube

Minikube comes with several features that make it a valuable tool for working with Kubernetes on your local machine:

  1. Supports the latest Kubernetes release (+6 previous minor versions)

  2. Cross-platform (Linux, macOS, Windows)

  3. Deploy as a VM, a container, or on bare-metal

  4. Multiple container runtimes (CRI-O, containerd, docker)

  5. Direct API endpoint for blazing-fast image load and build

  6. Advanced features such as LoadBalancer, filesystem mounts, FeatureGates, and network policy

  7. Addons for easily installed Kubernetes applications

  8. Supports common CI environments

💼Task 1: Install Minikube on your local

Install Minikube: To install Minikube, you can Visit this Git Hub.

Step 1: Update System Packages

Update your package lists to make sure you are getting the latest version and dependencies.

sudo apt update

Step 2: Install Required Packages

Install some basic required packages.

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

Step 3: Install Docker

Minikube can run a Kubernetes cluster either in a VM or locally via Docker. This guide demonstrates the Docker method.

sudo apt install -y docker.io

Start and enable Docker.

sudo systemctl start docker
sudo systemctl enable docker

Step 4: Install Minikube

First, download the Minikube binary using curl:

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

Make it executable and move it into your path:

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

Step 5: Install kubectl

Download kubectl, which is a Kubernetes command-line tool.

curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"

Make it executable and move it into your path:

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

Step 6: Start Minikube

Now, you can start Minikube with the following command:

sudo usermod -aG docker $USER && newgrp docker
minikube start --driver=docker

This command will start a single-node Kubernetes cluster inside a Docker container.

Step 7: Check Cluster Status

Check the cluster status with:

minikube status

You can also use kubectl to interact with your cluster:

kubectl get nodes

Step 8: Stop Minikube

When you are done, you can stop the Minikube cluster with:

minikube stop

Optional: Delete Minikube Cluster

If you wish to delete the Minikube cluster entirely, you can do so with:

minikube delete

That's it! You've successfully installed Minikube on Ubuntu, and you can now start deploying Kubernetes applications for development and testing.

Pod:

Pods are the smallest deployable units of computing that you can create and manage in Kubernetes.

A Pod (as in a pod of whales or pea pod) is a group of one or more containers, with shared storage and network resources, and a specification for how to run the containers. A Pod's contents are always co-located and co-scheduled and run in a shared context. A Pod models an application-specific "logical host": it contains one or more application containers that are relatively tightly coupled.

💼Task 2: Create your first pod on Kubernetes through minikube.

Create a YAML file (pod.yaml) with the following content to define your pod:

apiVersion: v1
kind: Pod
metadata:
  name: nginx
spec:
  containers:
  - name: nginx
    image: nginx:1.14.2
    ports:
    - containerPort: 80

  1. Apply the Manifest: Apply the pod manifest using kubectl
kubectl apply -f pod.yaml

  1. Check Pod Status: To check the status of your pod
kubectl get pods

👋 Conclusion :

In this blog, we cover, we will explore minikube, its features & we will create a Cluster with Nginx. We will cover some advanced topics.

Thank you for reading!

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