deployment.yaml

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
  labels:
    app.kubernetes.io/component: mysql
    app.kubernetes.io/instance: mysql
    app: mysql
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - env:
        - name: MYSQL_USER
          valueFrom:
            secretKeyRef:
              key: database-user
              name: mysql
        - name: MYSQL_PASSWORD
          valueFrom:
            secretKeyRef:
              key: database-password
              name: mysql
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              key: database-root-password
              name: mysql
        - name: MYSQL_DATABASE
          valueFrom:
            secretKeyRef:
              key: database-name
              name: mysql
        image: mysql:8.0
        livenessProbe:
          exec:
            command:
            - /bin/sh
            - -i
            - -c
            - MYSQL_PWD="$MYSQL_PASSWORD" mysqladmin -u $MYSQL_USER ping
          failureThreshold: 3
          initialDelaySeconds: 30
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 1
        name: mysql
        ports:
        - containerPort: 3306
          name: mysql
          protocol: TCP
        readinessProbe:
          exec:
            command:
            - /bin/sh
            - -i
            - -c
            - MYSQL_PWD="$MYSQL_PASSWORD" mysqladmin -u $MYSQL_USER ping
          failureThreshold: 3
          initialDelaySeconds: 5
          periodSeconds: 10
          successThreshold: 1
          timeoutSeconds: 1
        volumeMounts:
        - name: mysql-data
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-data
        persistentVolumeClaim:
          claimName: mysql-data