YAML快速编写示例

news2024/12/24 2:42:43

一、案例

1.1 自主式创建service关联上方的pod

资源名称	my-nginx-kkk
命名空间	my-kkk
容器镜像	nginx:1.21
容器端口	80
标签	njzb:my-kkk

1.1.1 创建一个demo文件夹

1.1.2 创建并获取模版文件

1.1.3 查看服务并编写yaml文件

1.1.4 编写yaml文件并部署，查看服务是否运行成功

apiVersion: v1
kind: Namespace
metadata:
  name: my-kkk
---
apiVersion: v1
kind: Pod
metadata:
  labels:
    njzb: my-kkk
  name: my-nginx-kkk
  namespace: my-kkk
spec:
  containers:
  - image: nginx:1.21
    name: my-nginx-kkk
    ports:
    - containerPort: 80
  restartPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
  labels:
    njzb: my-kkk
  name: my-nginx-kkk
  namespace: my-kkk
spec:
  ports:
  - nodePort: 31111  ###节点端口号
    port: 80         ###服务暴露端口
    protocol: TCP    ###通信协议
    targetPort: 80   ###要转发到的容器端口
  selector:
    njzb: my-kkk     ###该服务所选择的后端pod
  type: NodePort

修改yaml文件

apiVersion: v1
kind: Namespace
metadata:
  name: my-kkk
---
apiVersion: v1
kind: Pod
metadata:
  labels:
    njzb: my-kkk
  name: my-nginx-kkk
  namespace: my-kkk
spec:
  containers:
  - image: nginx:1.21
    name: my-nginx-kkk
    ports:
    - containerPort: 80
  restartPolicy: Always
---
apiVersion: v1
kind: Service
metadata:
  labels:
    njzb: my-kkk
  name: my-nginx-kkk
  namespace: my-kkk
spec:
  ports:
  - nodePort: 31111  ###节点端口号
    port: 80         ###服务暴露端口
    protocol: TCP    ###通信协议
    targetPort: 80   ###要转发到的容器端口
  selector:
    njzb: my-kkk     ###该服务所选择的后端pod
  type: NodePort

查看所有内容，进入到pod内，输入内容，退出后检测是否有内容

1.2 部署redis

1.2.1 编写redis配置文件

apiVersion: apps/v1
kind: Deployment
metadata:
  name: redis-dpm
  labels:
    app: redis
spec:               ###资源所需参数
  replicas: 1
  selector:
    matchLabels:
        app: redis   ###只会与标签app：redis的pod关联
  template:          ###业务模板，如果有多个副本，所有副本属性会按照模板进行匹配
    metadata:
      labels:
        app: redis
    spec:           ###资源所需参数
      containers:
      - name: redis
        image: redis:latest
        ports:
        - containerPort: 6379
---
apiVersion: v1
kind: Service
metadata:
  name: redis-dbm
  labels:
    app: redis
spec:
  selector:
    app: redis
  ports:
  - nodePort: 32379
    port: 6379
    protocol: TCP
    targetPort: 6379
  type: NodePort

1.2.2 运行redis配置文件

1.2.3 查看是否有服务和pod端口

1.3 部署myapp

1.3.1 编写myapp配置文件

apiVersion: apps/v1
kind: Deployment
metadata:
  name: myapp-kk
  namespace: default
  labels:
    app: myapp
spec:
  replicas: 1
  selector:
    matchLabels:
      app: myapp
  template:
    metadata:
      labels:
        app: myapp
    spec:
      containers:
      - name: myapp
        image: soscscs/myapp:v1
        ports:
        - containerPort: 80

1.3.2 运行服务并查看default下的pod是否运行成功

1.4 部署mysql

1.4.1 编写mysql配置文件

apiVersion: v1
kind: Namespace
metadata:
  name: mysql-server
---
apiVersion: apps/v1
kind: Deployment
metadata:
  labels:
    app: mysql-01
  name: mysql-01
  namespace: mysql-server
spec:                     
  replicas: 1              
  selector:               
    matchLabels:         
      app: mysql-01        
  template:                
    metadata:             
      labels:           
        app: mysql-01
    spec:              
      containers:
      - image: mysql:latest         
        name: mysql                
        ports:                    
        - containerPort: 3306    
        env:                    
        - name: MYSQL_ROOT_PASSWORD  
          value: "123123"  
        volumeMounts:
        - name: mysql-data
          mountPath: /var/lib/mysql
      volumes:
      - name: mysql-data
        emptyDir: {}       
--- 
apiVersion: v1              
kind: Service               
metadata:
  name: mysql-service
  namespace: mysql-server
  labels:
    app: mysql-01
spec:
  type: NodePort
  ports:
  - port: 3306
    targetPort: 3306
  selector:
    app: mysql-01