apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: mariadb
  namespace: sampleapp
spec:
  replicas: 1
  template:
    metadata:
      labels:
        app: mariadb
    spec:
      containers:
        - name: mariadb
          image: mariadb:10.4.4
          ports:
            - containerPort: 3306
          envFrom:
            - configMapRef:
                name: env-mysql
          volumeMounts:
            - mountPath: /var/lib/mysql
              name: mysql
      volumes:
        - name: mysql
          persistentVolumeClaim:
            claimName: mysql