数据库和Kubernetes

以下是一个使用Kubernetes进行数据库部署的示例代码：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: mysql-pv
spec:
  capacity:
    storage: 10Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: standard
  hostPath:
    path: /data/mysql

---

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pvc
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 10Gi
  storageClassName: standard

---

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
spec:
  selector:
    matchLabels:
      app: mysql
  strategy:
    type: Recreate
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - name: mysql
        image: mysql:latest
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-secret
              key: password
        ports:
        - containerPort: 3306
        volumeMounts:
        - name: mysql-pv
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-pv
        persistentVolumeClaim:
          claimName: mysql-pvc

---

apiVersion: v1
kind: Service
metadata:
  name: mysql
spec:
  selector:
    app: mysql
  ports:
    - protocol: TCP
      port: 3306
      targetPort: 3306

上述代码将创建一个带有PersistentVolumeClaim和Deployment的Kubernetes YAML文件，用于部署一个MySQL数据库。其中，PersistentVolume定义了存储卷的容量和访问模式，Deployment定义了MySQL容器的配置和挂载的存储卷，Service定义了访问MySQL服务的端口。

请注意，上述代码中使用了mysql-secret来获取MySQL的root密码。你需要提前创建一个名为mysql-secret的Kubernetes Secret对象，并设置password键的值作为MySQL的root密码。