Day 88 - Deploying a Django Todo App on AWS EC2 Using Kubeadm Kubernetes Cluster 🚀

Welcome to Day 88 of the #90DaysOfDevOps Challenge! 🚀

Today, we have an exciting project ahead where we will be deploying a Django Todo app on AWS EC2 using a Kubeadm Kubernetes cluster. Let’s dive in step by step! 📋

Project Description

In this project, our goal is to deploy a Django Todo app on AWS EC2 using a Kubernetes cluster created with Kubeadm. Kubernetes provides us with a scalable and fault-tolerant environment for running our applications, ensuring that they can handle varying loads and recover from failures automatically. 💡

Hands-on Project: Deploying Django Todo App on AWS EC2 with Kubernetes Cluster

Pre-requisites

Before we start, let’s ensure we have the necessary pre-requisites set up:

Create AWS EC2 Instances:
- Create two AWS EC2 servers with t2.medium configuration. One will act as the master server, and the other as the node server.

Install Docker on Both Servers:

SSH into each EC2 instance and install Docker:

  sudo apt update
  sudo apt install apt-transport-https curl
  sudo snap install kubectl --classic

Project Steps

Step 1: Clone the GitHub Repository

Begin by obtaining the Django Todo app from the GitHub repository provided. Clone it to your local environment or directly onto the AWS EC2 instance where we will set up the Kubernetes cluster. 🛠️

git clone https://github.com/LondheShubham153/django-todo-cicd.git

Step 2: Setup the Kubernetes Cluster

Now, let’s set up the Kubernetes cluster using Kubeadm on both the master and worker nodes. 🌐

Master Node Setup:

# Run these commands on the master node as root or using sudo
sudo apt update -y
sudo apt install docker.io -y

# Install Kubernetes components
sudo curl -fsSL "https://packages.cloud.google.com/apt/doc/apt-key.gpg" | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/kubernetes-archive-keyring.gpg
echo 'deb https://packages.cloud.google.com/apt kubernetes-xenial main' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt update -y
sudo apt install kubeadm=1.20.0-00 kubectl=1.20.0-00 kubelet=1.20.0-00 -y

# Initialize Kubernetes cluster
sudo kubeadm init --pod-network-cidr=10.244.0.0/16

# Set up kubeconfig for the current user
mkdir -p $HOME/.kube
sudo cp -i /etc/kubernetes/admin.conf $HOME/.kube/config
sudo chown $(id -u):$(id -g) $HOME/.kube/config

# Apply a networking addon (Weave Net)
kubectl apply -f https://github.com/weaveworks/weave/releases/download/v2.8.1/weave-daemonset-k8s.yaml

Worker Node Setup:

# Run these commands on the worker node as root or using sudo
sudo apt update -y
sudo apt install docker.io -y

# Install Kubernetes components
sudo curl -fsSL "https://packages.cloud.google.com/apt/doc/apt-key.gpg" | sudo gpg --dearmor -o /etc/apt/trusted.gpg.d/kubernetes-archive-keyring.gpg
echo 'deb https://packages.cloud.google.com/apt kubernetes-xenial main' | sudo tee /etc/apt/sources.list.d/kubernetes.list
sudo apt update -y
sudo apt install kubeadm=1.20.0-00 kubectl=1.20.0-00 kubelet=1.20.0-00 -y

# Join the worker node to the cluster (use the join command obtained from master)
sudo kubeadm join <master_node_ip>:6443 --token <token> --discovery-token-ca-cert-hash <hash> --v=5

Replace <master_node_ip>, <token>, and <hash> with appropriate values obtained from the master node.

Step 3: Setup Deployment and Service for Kubernetes

Now, let’s deploy our Django Todo app using Kubernetes Deployment and Service YAML files. 🚢

Deployment.yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: django-todo-app-deployment
spec:
  replicas: 2
  selector:
    matchLabels:
      app: django-todo-app
  template:
    metadata:
      labels:
        app: django-todo-app
    spec:
      containers:
        - name: django-todo-app
          image: trainwithshubham/django-todo:latest
          ports:
            - containerPort: 80

Apply the Deployment YAML:

kubectl apply -f deployment.yaml

Service.yaml:

apiVersion: v1
kind: Service
metadata:
  name: django-todo-app-service
spec:
  type: NodePort
  selector:
    app: django-todo-app
  ports:
    - protocol: TCP
      port: 80
      targetPort: 80
      nodePort: 30080

Apply the Service YAML:

kubectl apply -f service.yaml

Step 4: Access Your Django Todo App

Your Django Todo app should now be accessible through the specified port on the master server. You can access it using the public IP or DNS name of the master server. 🌐

Conclusion:

Congratulations on completing Day 88 of the #90DaysOfDevOps challenge! 🎉 You have successfully deployed a Django Todo app on AWS EC2 using a Kubeadm Kubernetes cluster. Kubernetes provides a robust platform for managing containerized applications, ensuring scalability and resilience. Stay tuned for tomorrow’s challenge, where we will explore another exciting DevOps project!

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