[website-link] "https://e-commerce-by-mahesh.vercel.app/"

Description of Project

1. Here i tried to deploy E commerce application on K8S
2. i created and pushed docker image on docker hub
3. i made k8s yaml file to setup containers on it

Kubernetes Setup

To use Kubernetes (K8s) with your Node.js application that you've Dockerized, you'll follow these general steps:

1. Kubernetes Configuration

Create Kubernetes Manifests

Create Kubernetes manifests in YAML format that describe your application's deployment, service, and optionally an Ingress (if you want to expose your application externally).

Here's a basic example:

deployment.yaml - Defines how your application should be deployed:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-node-app
spec:
  replicas: 1
  selector:
    matchLabels:
      app: my-node-app
  template:
    metadata:
      labels:
        app: my-node-app
    spec:
      containers:
        - name: my-node-app
          image: your-docker-registry/your-node-app-image:tag
          ports:
            - containerPort: 8000

Replace your-docker-registry/your-node-app-image:tag with the actual path to your Docker image (e.g., myregistry/my-node-app:latest).

service.yaml - Defines how clients can access your application:

apiVersion: v1
kind: Service
metadata:
  name: my-node-app
spec:
  selector:
    app: my-node-app
  ports:
    - protocol: TCP
      port: 8000
      targetPort: 8000
  type: ClusterIP

This Service will create an internal IP address that other Kubernetes pods can use to access your application.

Optional: Ingress Configuration

If you want to expose your application to the outside world, you can use an Ingress resource. Here's a basic example:

ingress.yaml - Defines how external traffic will reach your application:

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: my-node-app-ingress
spec:
  rules:
    - host: your.domain.com
      http:
        paths:
          - path: /
            pathType: Prefix
            backend:
              service:
                name: my-node-app
                port:
                  number: 8000

Replace your.domain.com with your actual domain name.

2. Deploying to Kubernetes

Once you have your Kubernetes manifests ready:

1. Apply Manifests: Use kubectl apply to deploy your application to Kubernetes:

   kubectl apply -f deployment.yaml
   kubectl apply -f service.yaml
   kubectl apply -f ingress.yaml  # If using Ingress

2. Verify Deployment: Check the deployment status:

   kubectl get deployments

   Ensure that the deployment has 1/1 replicas available.

3. Verify Service: Check the service and get its ClusterIP:

   kubectl get services

   Verify that your service is running and note its ClusterIP.

4. Verify Ingress (Optional): If you used Ingress, verify that the Ingress resource is created and note the external IP.

3. Accessing Your Application

• Internal Access: If you only need internal access within the Kubernetes cluster, use the ClusterIP of your service to access your application from other pods.

• External Access: If you used an Ingress resource, you can access your application using the configured host (your.domain.com in the example) via the external IP provided by your cloud provider.

4. Managing and Scaling

• Scaling: You can scale your application by adjusting the replicas field in your deployment.yaml file and reapplying it using kubectl apply -f deployment.yaml.

• Updating: To update your application, build a new Docker image with your changes, push it to your Docker registry, update the image tag in your deployment.yaml file, and apply the changes with kubectl apply -f deployment.yaml.

Additional Resources

• Kubernetes provides many more features like PersistentVolumes, Secrets, ConfigMaps, and more. Explore the Kubernetes documentation and tutorials to further enhance and secure your application.

By following these steps, you can effectively deploy and manage your Dockerized Node.js application using Kubernetes (K8s). If you have specific questions or need further clarification on any part of this process, feel free to ask!

Visualization:

┌─────────────────────────┐
│      Deployment         │
│ (frontend-deployment)   │
│                         │
│   ┌───────────────────┐ │
│   │     Selector      │ │
│   │   (matchLabels)   │ │
│   │    app: frontend  │ │
│   └───────────────────┘ │
│                         │
│   ┌───────────────────┐ │
│   │   Pod Template    │ │
│   │    (template)     │ │
│   │   ┌───────────────┐ │
│   │   │    Labels     │ │
│   │   │  app: frontend│ │
│   │   └───────────────┘ │
│   │   ┌───────────────┐ │
│   │   │  Containers   │ │
│   │   │  ┌───────────┐ │
│   │   │  │   Name    │ │
│   │   │  │mypagecontainer│ │
│   │   │  │   Image   │ │
│   │   │  │maheshravaji/mylandingpageweb:latest│ │
│   │   │  │   Ports   │ │
│   │   │  │  ┌───────┐│ │
│   │   │  │  │  8000 ││ │
│   │   │  │  └───────┘│ │
│   │   │  └───────────┘ │
│   │   └───────────────┘ │
│   └───────────────────┘ │
└─────────────────────────┘

┌─────────────────────────┐
│       Service           │
│      (my-service)       │
│                         │
│   ┌───────────────────┐ │
│   │     Selector      │ │
│   │   (matchLabels)   │ │
│   │    app: frontend  │ │
│   └───────────────────┘ │
│                         │
│   ┌───────────────────┐ │
│   │      Ports        │ │
│   │   ┌─────────────┐ │ │
│   │   │  port: 80   │ │ │
│   │   │ targetPort: 8000│ │ │
│   │   └─────────────┘ │ │
│   └───────────────────┘ │
└─────────────────────────┘

Extra Point ⏬

+-----------------------------------------------------------------+
|                          Kubernetes Cluster                     |
|                                                                 |
|  +---------------------+    +---------------------+             |
|  |    dev-namespace    |    |    prod-namespace   |             |
|  |                     |    |                     |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |  |   Frontend Pod | |    |  |   Frontend Pod | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  |  | Container | | |    |  |  | Container | | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |                     |    |                     |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |  |   Backend Pod  | |    |  |   Backend Pod  | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  |  | Container | | |    |  |  | Container | | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |                     |    |                     |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |  |  Database Pod  | |    |  |  Database Pod  | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  |  | Container | | |    |  |  | Container | | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |                     |    |                     |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  |  |  Redis Pod     | |    |  |  Redis Pod     | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  |  | Container | | |    |  |  | Container | | |             |
|  |  |  +-----------+ | |    |  |  +-----------+ | |             |
|  |  +----------------+ |    |  +----------------+ |             |
|  +---------------------+    +---------------------+             |
+-----------------------------------------------------------------+

<<<<<<< HEAD

Problem i faced while doing this Project 🫠

=======

55b9c067fe87802d5960e5c4ea128e717fbfef86

1. unable to connect ( site Can't reached ) after pulling my docker image ---> but i solved finally ( how :)) - i messed in Service.yaml file of kubernetes that's it ... )
2. i Know that yaml files of k8s are correctly typed still a am not able to access my application 'command :' http://<cluster_ip>:<nodeport_ip>
3. ETC...

NOTE : Enjoy the journey, whether difficult or easy, for it's the making of a better you :) that's the person who i am :)