apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql
  namespace: web-app
  labels:
    app: k8s-task-manager
    tier: database
spec:
  serviceName: mysql
  replicas: 1
  selector:
    matchLabels:
      app: k8s-task-manager
      tier: database
  template:
    metadata:
      labels:
        app: k8s-task-manager
        tier: database
    spec:
      containers:
      - name: mysql
        image: mysql:5.7
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: "password"
        - name: MYSQL_DATABASE
          value: "taskmanager"
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
        resources:
          requests:
            cpu: "500m"
            memory: "512Mi"
          limits:
            cpu: "1000m"
            memory: "1Gi"
  volumeClaimTemplates:
  - metadata:
      name: mysql-persistent-storage
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 2Gi