Kubernetes Yaml

部署一个简单的Nginx服务：

deployment-yaml:

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-web
spec:
  replicas: 3
  selector:
    matchLabels:
      name: nginx-web
    template:
      metadata:
        labels:
          name: nginx-web
      spec:
        containers:
        - name: nginx-web
          image: nginx

service-yaml

apiVersion: v1
kind: Service
metadata:
  name: niginx-service
spec:
  selector:
    name: nginx-web
  type: NodePort
  ports:
  - port: 80
    protocol: TCP
    targetPort: 80
    name: http
    nodePort: 30080

部署一个基于NFS持久化的Mysql服务：

---
# mysql-pv

apiVersion: v1
kind: PersistentVolume
metadata:
  name: mysql-pv
spec:
  accessModes:
    - ReadWriteMany
  capacity:
    storage: 1Gi
  persistentVolumeReclaimPolicy: Retain
  storageClassName: nfs
  nfs:
    path: /nfs-data/mysql-pv
    server: 172.16.65.200

---
# mysql-pvc

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: mysql-pvc
spec:
  accessModes:
    - ReadWriteMany
  resources:
    requests:
      storage: 1Gi
  storageClassName: nfs

---
# mysql deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
spec:
  selector:
    matchLabels:
      name: mysql
  template:
    metadata:
      labels:
        name: mysql
    spec:
      containers:
      - image: mysql
        name: mysql
        env:
        - name: MYSQL_ROOT_PASSWORD
          value: password
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: mysql-persistent-storage
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-persistent-storage
        persistentVolumeClaim:
          claimName: mysql-pvc

---
# mysql-service

apiVersion: v1
kind: Service
metadata:
  name: mysql
spec:
  ports:
  - port: 3306
  selector:
   name: mysql

持久化测试：

# 运行一个mysql 客户端，通过DNS服务连接到 mysql service
# kubectl run -it --rm --image=mysql:5.6 --restart=Never mysql-client -- mysql -h mysql -ppassword

mysql> use mysql;
mysql> create table my_user(name char(10));
mysql> insert my_user values("alex");
mysql> select * from my_user;
+------+
| name |
+------+
| alex |
+------+
1 row in set (0.00 sec)