Mysql Statefulset

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql
spec:
  selector:
    matchLabels:
      app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
        - name: mysql
          image: mysql:8.0
          ports:
            - containerPort: 3306
          env:
            - name: MYSQL_ROOT_PASSWORD
              value: "password"
            - name: MYSQL_DATABASE
              value: "user_db"
          volumeMounts:
            - name: mysql-persistent-storage
              mountPath: /var/lib/mysql
          resources:
            requests:
              memory: "256Mi"
              cpu: "250m"
            limits:
              memory: "512Mi"
              cpu: "500m"
  serviceName: "mysql"
  replicas: 1
  volumeClaimTemplates:
    - metadata:
        name: mysql-persistent-storage
      spec:
        accessModes: [ "ReadWriteOnce" ]
        resources:
          requests:
            storage: 1Gi