Kubernetes Deployment.yaml-CodePudding

I'm new to Kubernetes, I have a docker image built and run with npm token how to convert this to deployment in Kubernetes. Below is my image and command to build and run.

#First Build
FROM node:16.17-bullseye

ARG NPM_TOKEN
WORKDIR /usr/src/app

#COPY package*.json .npmrc ./
COPY package*.json /usr/src/app/
COPY .npmrc /usr/src/app/


RUN npm update
RUN npm install 

COPY . .


CMD ["npm","run","main"]

Buld command:

docker build . -t image --build-arg NPM_TOKEN=<token>

Run command:

docker run -p 3001:3001 -it -e NPM_TOKEN="Token" imageid

CodePudding user response：

I'm using azure pipelines where image is build, pushed to azure container registry, then pulled and deployed to aks (azure kubernetes service). Below is my deployment file :

apiVersion : apps/v1
kind: Deployment
metadata:
  name: microa
  namespace: ingress-basic
spec:
  replicas: 1
  selector:
    matchLabels:
      app: microa
  template:
    metadata:
      labels:
        app: microa
    spec:
      containers:
        - name: microa
          image: acrURL/microa
          args: ["NPM_TOKEN=<token>"]
          resources:
            requests:
              memory: "256Mi"
              cpu: "1000m"
            limits:
              memory: "512Mi"
              cpu: "1500m"
          ports:
          - containerPort: 3001

CodePudding user response：

I think you're going in the right direction, one thing that needs to be corrected is that the "NPM_TOKEN" is written as an environment variable in your docker script, but in your YAML file, you defined it as an arg. So the correct deployment.yaml file would be:

apiVersion : apps/v1
kind: Deployment
metadata:
  name: microa
  namespace: ingress-basic
spec:
  replicas: 1
  selector:
    matchLabels:
      app: microa
  template:
    metadata:
      labels:
        app: microa
    spec:
      containers:
        - name: microa
          image: acrURL/microa
          env:
          - name: NPM_TOKEN
            value: "<token>"
          resources:
            requests:
              memory: "256Mi"
              cpu: "1000m"
            limits:
              memory: "512Mi"
              cpu: "1500m"
          ports:
          - containerPort: 3001

Additionally, you have to port forward the container port to your localhost in order to access your application, the command below is equivalent to "-p 3001:3001" in your docker run command:

kubectl port-forward -n ingress-basic pods/microa 3001:3001

Once the port-forward is set up, you would be able to access your application at http://localhost:3001 .