乱读天书，不求甚解

周祎骏的个人云笔记

乱读天书，不求甚解

Kubernetes 03.01 service

2023-05-17 02:21:49 41 0 0

admin

> APIresource: service
 
# 选出app=nginx 的pod 放入service
```yaml
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
  
spec:
  #clusterIP: None           
  #打开这个就是headless service, 没有vip
  #DNS 返回所有pod ip
  selector:
    app: nginx
  sessionAffinity: ClientIP  #粘性会话
  sessionAffinityConfig:     #粘性会话超时时间
    clientIP:
      timeoutSeconds: 600 
  ports:
  - port: 8080               #service vip 暴露的端口
    targetPort: 80           #容器端口
    protocol: TCP
```
# 指定IP 放入服务（通常用于跑在节点上，不是pod 上的服务）
```yaml
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  ports:
  - port: 8080               #service vip 暴露的端口
    targetPort: 80           #容器端口
    protocol: TCP
---
apiVersion: v1
kind: Endpoints
metadata:
  name: nginx-service
subsets:
  - addresses:
    - ip: 172.16.1.173
    ports:
      - port: 80
  - addresses:
    - ip: 172.16.1.175
    ports:
      - port: 80
```
# 外部直接访问节点（就是容器端口与节点端口映射）
```yaml
apiVersion: v1
kind: Service
metadata:
  name: nginx-service
spec:
  type: NodePort
  selector:
    app: nginx
  ports:
  - port: 8080               #service vip 暴露的端口
    targetPort: 80           #容器端口
    protocol: TCP
```
# 把外部域名映射成内部域名（CNAME）
```yaml
apiVersion: v1
kind: Service
metadata:
  name: aaa-service
spec:
  type: ExternalName
  externalName: bbb.com
```

上一篇: Kubernetes 02.52 Job_AND_CronJob

下一篇: Linux_Process 0.0 查看进程信息

文档导航