deployPV.yaml

apiVersion: v1                                     # Create Secret object for password
kind: Secret
metadata:
  name: mysqlsecret
type: Opaque
stringData:
  password: P@ssw0rd!
---
apiVersion: apps/v1
kind: Deployment                                  # Deployment
metadata:
  name: mysqldeployment
  labels:
    app: mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql                                   # select deployment container (template > metadata > labels)
  strategy:
    type: Recreate
  template:
    metadata:
      labels:  
        app: mysql
    spec:
      containers:
        - name: mysql
          image: mysql
          ports:
            - containerPort: 3306
          volumeMounts:                             # VolumeMounts on path and volume name
            - mountPath: "/var/lib/mysql"
              name: mysqlvolume                     # which volume to select (volumes > name)
          env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:                            # get mysql password from secrets
                secretKeyRef:
                  name: mysqlsecret
                  key: password
      volumes:
        - name: mysqlvolume                         # name of Volume
          persistentVolumeClaim:
            claimName: mysqlclaim                   # chose/select "mysqlclaim" PVC that is defined above.