Kubernetes DevOps Project Using ArgoCD

Project:

Automated Deployment of Scalable Applications on AWS EC2 with Kubernetes and Argo CD

Description:

Led the deployment of scalable applications on AWS EC2 using Kubernetes and Argo CD for streamlined management and continuous integration. Orchestrated deployments via Kubernetes dashboard, ensuring efficient resource utilization and seamless scaling.

Key Technologies:

• AWS EC2: Infrastructure hosting for Kubernetes clusters.

• Kubernetes Dashboard: User-friendly interface for managing containerized applications.

• Argo CD: Continuous Delivery tool for automated application deployments.

STEPS TO RUN THIS PROJECT: -

1. Launch an AWS Instance and Access it through Putty

Instance Details:

Name - ArgoCD-Project

AMI - Ubuntu Server 24.04 LTS (HVM), EBS General Purpose (SSD) Volume Type

Instance Type - t2.medium

Configure Storage - 15GB

2. Install Docker

• Run the command for Installing Docker

# Add Docker's official GPG key:
sudo apt-get update
sudo apt-get install ca-certificates curl
sudo install -m 0755 -d /etc/apt/keyrings
sudo curl -fsSL https://download.docker.com/linux/ubuntu/gpg -o /etc/apt/keyrings/docker.asc
sudo chmod a+r /etc/apt/keyrings/docker.asc

# Add the repository to Apt sources:
echo \
  "deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] https://download.docker.com/linux/ubuntu \
  $(. /etc/os-release && echo "$VERSION_CODENAME") stable" | \
  sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt-get update
sudo apt-get install docker-ce docker-ce-cli containerd.io docker-buildx-plugin docker-compose-plugin
sudo usermod -aG docker $USER && newgrp docker

• Check Docker Version

sudo docker --version

3. Creating and Managing Kubernetes Cluster with Kind

• Create a bash script install_kind.sh for installing kind

    #!/bin/bash
    # For AMD64 / x86_64
    [ $(uname -m) = x86_64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.20.0/kind-linux-amd64
    chmod +x ./kind
    sudo cp ./kind /usr/local/bin/kind
    rm -rf kind
  

• Give Executable permission to file

    chmod +x install_kind.sh
  

• Run the Script

    ./install_kind.sh
  

  

  Check kind version by this command: kind —version

• Create a config.yml for installing cluster in Docker

    kind: Cluster
    apiVersion: kind.x-k8s.io/v1alpha4
  
    nodes:
      - role: control-plane
        image: kindest/node:v1.30.0
      - role: worker
        image: kindest/node:v1.30.0
      - role: worker
        image: kindest/node:v1.30.0
  

• Create a 3-node Kubernetes cluster using Kind:

    kind create cluster --config=config.yml --name my-cluster
  

  

• Check kind is working

    kind get clusters
  

  

4. Installing kubectl

• Install kubectl using install_kubectl.sh script

    #!/bin/bash
  
    # Variables
    VERSION="v1.30.0"
    URL="https://dl.k8s.io/release/${VERSION}/bin/linux/amd64/kubectl"
    INSTALL_DIR="/usr/local/bin"
  
    # Download and install kubectl
    curl -LO "$URL"
    chmod +x kubectl
    sudo mv kubectl $INSTALL_DIR/
    kubectl version --client
  
    # Clean up
    rm -f kubectl
  
    echo "kubectl installation complete."
  

• Give Exectuable permission to file and Run it

    chmod +x install_kubectl.sh
    ./install_kubectl.sh
  

• Check cluster information:

    kubectl cluster-info 
    kubectl get nodes
  

  

5. Managing Docker and Kubernetes Pods

• Check Docker containers running:

    docker ps
  

  

• List all Kubernetes pods in all namespaces:

    kubectl get pods -A
  

6. Installing Argo CD

• Create a namespace for Argo CD:

    kubectl create namespace argocd
  

  

• Apply the Argo CD manifest:

    kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
  

• Check pods in Argo CD namespace:

    kubectl get pods -n argocd
  

  

• Check services in Argo CD namespace:

    kubectl get svc -n argocd
  

  

• Expose Argo CD server using NodePort:

    kubectl patch svc argocd-server -n argocd -p '{"spec": {"type": "NodePort"}}'
  

  

• Forward ports to access Argo CD server:

    kubectl port-forward -n argocd service/argocd-server 8443:443 --address 0.0.0.0 &
  

Note: - Enable port 8443 on AWS Instance Security Groups

Copy and paste the <public-ip:8443> in browser

7. Argo CD Initial Admin Password

Username - admin

Password - follow the below step to get password

• Retrieve Argo CD admin password:

    kubectl get secret -n argocd argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d && echo
  

  

8. Cloning and Running the Example Voting App

• Clone the voting app repository:

    git clone https://github.com/harshitsahu2311/Voting-app-kubernetes-Project.git
    cd Voting-app-kubernetes-Project/
  

• Create Deployment in ArgoCD application

  • Click on new app

    

  • Create a project:

    

  • Configure you GitHub

    

  • Configure your Kubernetes cluster

    

  • Click on Create

    

  • Make some changes in the deployment file and check whether it is changing or not here

    

    

  • BOOM!

  • 

• Check on terminal also that pods and services are running

    kubectl get pods
    kubectl get svc
  

  

• Forward local ports for accessing the voting and result apps:

    kubectl port-forward service/vote 5000:5000 --address=0.0.0.0 &
    kubectl port-forward service/result 5001:5001 --address=0.0.0.0 &
  

  On port 5000 Vote-app Service is running:

  

  On port 5001 Result-app Service is running:

  

9. Installing Kubernetes Dashboard

• Deploy Kubernetes dashboard:

    kubectl apply -f https://raw.githubusercontent.com/kubernetes/dashboard/v2.7.0/aio/deploy/recommended.yaml
  

  

• Create a manifest dashboard-adminuser.yml for creation of admin-user:

    apiVersion: v1
    kind: ServiceAccount
    metadata:
      name: admin-user
      namespace: kubernetes-dashboard
    ---
    apiVersion: rbac.authorization.k8s.io/v1
    kind: ClusterRoleBinding
    metadata:
      name: admin-user
    roleRef:
      apiGroup: rbac.authorization.k8s.io
      kind: ClusterRole
      name: cluster-admin
    subjects:
      - kind: ServiceAccount
        name: admin-user
        namespace: kubernetes-dashboard
  

• Run the manifest file:

    kubectl apply -f dashboard-adminuser.yml
  

  

• Check the admin-user Service:

    kubectl get svc -n kubernetes-dashboard
  

  

• Forward local ports for accessing the Kubernetes dashboard:

    kubectl port-forward -n kubernetes-dashboard svc/kubernetes-dashboard 8080:443 --address 0.0.0.0 &
  

  Open the port 8080 in instance security and access it

  

  If you get this run https://public-ip:8080

  

  Now you need a token to access the Kubernetes monitoring dashboard

• Create a token for dashboard access:

    kubectl -n kubernetes-dashboard create token admin-user
  

  

• Copy the Token and Paste

  

Congratulations!! You have successfully deployed the Kubernetes cluster in kind and you can monitor it also with the help of Kubernetes dashboard.

For more projects and DevOps related tasks and work just mail me on my Email ID.

Email id - harshitsahu6088@gmail.com