kubernetes/express

stack.yaml

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: express
data:
  index.js: |
    const express = require('express')
    const app = express();
    const port = 3000;

    app.get('/', (req, res) => {
      res.send('Hello World! You too!')
    });

    app.listen(port, () => {
      console.log(`Example app listening at http://localhost:${port}`)
    });
---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: express
  labels:
    app: express
spec:
  replicas: 1
  selector:
    matchLabels:
      app: express
  template:
    metadata:
      labels:
        app: express
    spec:
      restartPolicy: Always
      initContainers:
        - name: init
          image: node:lts
          volumeMounts:
            - mountPath: /app
              name: memory
          workingDir: /app
          args:
            - npm
            - install
            - --save
            - express
      containers:
        - name: express
          image: node:lts
          imagePullPolicy: IfNotPresent
          volumeMounts:
            - mountPath: /app
              name: memory
            - mountPath: /app/index.js
              subPath: index.js
              name: express
          workingDir: /app
          args:
            - index.js
          ports:
            - containerPort: 3000
              name: development
      volumes:
        - name: express
          configMap:
            defaultMode: 0722
            name: express
        - name: memory
          emptyDir:
            medium: Memory
            sizeLimit: 256Mi
---
apiVersion: v1
kind: Service
metadata:
  name: express
spec:
  selector:
    app: express
  ports:
    - port: 80
      protocol: TCP
      targetPort: development
      name: http
---
apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: express
  annotations:
    cert-manager.io/cluster-issuer: cert-manager-cluster-issuer
    kubernetes.io/ingress.class: nginx
spec:
  rules:
    - host: express.com
      http:
        paths:
          - backend:
              serviceName: express
              servicePort: http
            path: /
  tls:
    - hosts:
        - express.com
      secretName: express.com