apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql
  namespace: react-mysql
spec:
  serviceName: mysql
  replicas: 1
  selector:
    matchLabels:
      app: mysql
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
        - name: mysql
          image: mysql:8.0
          ports:
            - containerPort: 3306
          envFrom:
            - configMapRef:
                name: app-config
            - secretRef:
                name: app-secret
          env:
            - name: MYSQL_ROOT_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: app-secret
                  key: MYSQL_ROOT_PASSWORD
          volumeMounts:
            - name: mysql-data
              mountPath: /var/lib/mysql
            - name: mysql-init
              mountPath: /docker-entrypoint-initdb.d
          resources:
            requests:
              cpu: 250m
              memory: 512Mi
            limits:
              cpu: 500m
              memory: 1Gi
          readinessProbe:
            exec:
              command: ["mysqladmin", "ping", "-h", "localhost"]
            initialDelaySeconds: 20
            periodSeconds: 10
          livenessProbe:
            exec:
              command: ["mysqladmin", "ping", "-h", "localhost"]
            initialDelaySeconds: 40
            periodSeconds: 20
      volumes:
        - name: mysql-init
          configMap:
            name: mysql-init-sql
  volumeClaimTemplates:
    - metadata:
        name: mysql-data
      spec:
        accessModes: ["ReadWriteOnce"]
        resources:
          requests:
            storage: 2Gi