aaditya2801/node_app

Simple Web App: To Do Task List

Build a Docker image and Pushing it to Docker Hub

1) For Building a Docker File:

$ sudo docker build -t [IMAGE NAME]:[IMAGE VERSION] .

// Here . specifies current directory.

2) For logging into your Docker Hub:

$ sudo docker login

// Here you have to provide your docker hub username and password.

3) Tag Docker Image:

$ sudo docker tag [IMAGE NAME]:[IMAGE VERSION] [DOCKER HUB USERNAME]/[IMAGE NAME]:[VERSION]

// Here [IMAGE NAME]:[IMAGE VERSION] ---> Source Image & [DOCKER HUB USERNAME]/[IMAGE NAME]:[VERSION] ----> Target Image

4) Push Docker Image to Docker Hub:

$ sudo docker push [DOCKER HUB USERNAME]/[IMAGE NAME]:[VERSION]

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Deploy the App in Kubernetes

• Pre Req: Single Node Minikube Cluster or Multi Node K8S Cluster or EKS, GKE, AKS, Linode K8s.
• Source for Minikube
• Source for EKS

1) Create Deployment

$ kubectl create deployment [DEPLOYMENT NAME] --image=[DOCKER HUB USERNAME]/[IMAGE NAME]:[VERSION]

2) Expose Deployment

$ kubectl expose deploy [DEPLOYMENT NAME] --port=8080 --type=NodePort

3) For Accessing App

Hit to: IP:PORT

~ Note:

• Suppose you are using minikube cluster, so for getting ip of it run "minikube ip" command.
• For getting node port on which our app is exposed run "kubectl get svc".
• If you want to replicate your app run: kubectl scale deploy [DEPLOYMENT NAME] --replicas=[REPLICA COUNT]

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