apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql-deployment
  labels:
    app: mysql-app
spec:
  selector:
    matchLabels:
      app: mysql-app
      tier: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: mysql-app
        tier: mysql
    spec:
      containers:
        - image: mysql:5.6
        name: mysql-container
        env:
          - name: MYSQL_ROOT_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mysql-root-pass
                key: password
          - name: MYSQL_DATABASE
            valueFrom:
              secretKeyRef:
                name: mysql-db-url
                key: database
          - name: MYSQL_USER
            valueFrom:
              secretKeyRef:
                name: mysql-user-pass
                key: username
          - name: MYSQL_PASSWORD
            valueFrom:
              secretKeyRef:
                name: mysql-user-pass
                key: password
        ports:
          - containerPort: 3306
            name: mysql
        volumeMounts:
          - name: mysql-persistent-storage
            mountPath: /var/lib/mysql
      volumes:
        - name: mysql-persistent-storage
          persistentVolumeClaim:
            claimName: mysql-pv-claim