Kubernetes Backend Deployment for Vlog Website

This repository contains all the necessary files to deploy a backend for a vlog website on a Kubernetes cluster (specifically Minikube). The backend is composed of three main microservices: auth-service, users-service, and posts-service. These services are managed using ArgoCD to ensure continuous deployment. The backend handles user authentication, user information management, and the entire business logic for posts.

Prerequisites

To run the cluster with the backend infrastructure, ensure you have the following installed:

• Minikube
• Helm

Step 1: Clone the Repository

First, clone this repository:

git clone https://github.com/MiguelCastilloSanchez/helm-chart-app-services.git

Step 2: Start Minikube

Start Minikube:

minikube start

Step 3: Prepare the Namespace and Internal Services

Navigate to the repository directory and execute the following commands to set up the namespace and internal services:

sudo chmod +x /internal-services/create-services.sh
./internal-services/create-services.sh

These commands will create services such as:

• MongoDB (database)
• RabbitMQ (message broker)
• Redis (in-memory storage)

Step 4: Deploy Microservices with ArgoCD

Install ArgoCD

Install the latest stable version of ArgoCD:

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

Forward Ports for ArgoCD

Check available services in the argocd namespace and forward the necessary port:

kubectl get services -n argocd
kubectl port-forward service/argocd-server -n argocd 8085:443

Retrieve ArgoCD Credentials

Obtain the default admin password for ArgoCD:

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

You can now access ArgoCD through your browser at https://localhost:8085 using the retrieved credentials.

Create Applications in ArgoCD

In the ArgoCD dashboard, create applications for the microservices:

1. Name the applications: auth-service, users-service, and posts-service.
2. Select automatic deployment (recommended).
3. Specify the namespace as app-test.
4. Use the appropriate values.yaml file for each service.

Step 5: Configure Ingress for the Backend

Navigate to the Ingress Configuration Directory

cd /ingress-controller

Enable NGINX Ingress Add-on

Enable the NGINX Ingress add-on in the cluster:

minikube addons enable ingress

Apply the Ingress Configuration File

Apply the ingress configuration:

kubectl apply -f app-ingress.yaml

Obtain the Ingress IP Address

Monitor the ingress to get the assigned IP address:

kubectl get ingress -n app-test --watch

Update Local DNS

Add the IP address to your local DNS configuration:

sudo vi /etc/hosts

At the end of the file, add the following line:

{IP_ADDRESS} my-app.com

Conclusion

Your Kubernetes cluster with the backend is now fully deployed. ArgoCD ensures that any changes pushed to the repository will automatically propagate to the configured environment.

For a better understanding of the architecture and deployed services (including their endpoints), you can visit their respective repositories:

• Auth Service
• Users Service
• Posts Service

Cluster Architecture

CI/CD Architecture