apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: db-statefulset
  labels:
    service: db
spec:
  serviceName: db-service
  replicas: 1
  selector:
    matchLabels:
      service: db
  template:
    metadata:
      labels:
        service: db
    spec:
      containers:
      - name: mysql
        image: mysql
        resources:
          requests:
            memory: "512Mi"
            cpu: "1000m"
          limits:
            memory: "2048Mi"
            cpu: "2000m"
        ports:
        - containerPort: 3306
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-secret
              key: mysql-root-password
        volumeMounts:
        - name: mysql-data
          mountPath: /var/lib/mysql
  volumeClaimTemplates:
  - metadata:
      name: mysql-data
    spec:
      accessModes: [ "ReadWriteOnce" ]
      resources:
        requests:
          storage: 1Gi