apiVersion: apps/v1
kind: Deployment
metadata:
  name: backend
  namespace: react-mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: backend
  template:
    metadata:
      labels:
        app: backend
    spec:
      initContainers:
        - name: wait-for-mysql
          image: busybox:1.36
          command: ["sh", "-c", "until nc -z mysql 3306; do echo waiting for mysql; sleep 3; done"]
      containers:
        - name: backend
          image: subkamble/react-mysql-backend:latest
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 3000
          envFrom:
            - configMapRef:
                name: app-config
            - secretRef:
                name: app-secret
          resources:
            requests:
              cpu: 100m
              memory: 128Mi
            limits:
              cpu: 250m
              memory: 256Mi
          readinessProbe:
            httpGet:
              path: /user
              port: 3000
            initialDelaySeconds: 10
            periodSeconds: 10
          livenessProbe:
            httpGet:
              path: /user
              port: 3000
            initialDelaySeconds: 20
            periodSeconds: 20