1焙压、ClusterIP

apiVersion: v1
kind: Service
metadata:
  name: base-svc-nginx
  namespace: default
spec:
  selector:
    app: web-http
    release: stable
  type: ClusterIP
  sessionAffinity: ClientIP
  ports:
   - name: nginx
     port: 80
     targetPort: 80

此方式只能再集群內(nèi)部訪問
sessionAffinity: ClientIP 表示客戶端會話保持鸿脓，每次調(diào)度到同一pod

2抑钟、NodePort

apiVersion: v1
kind: Service
metadata:
  name: base-svc-nginx
  namespace: default
spec:
  selector:
    app: web-http
    release: stable
  type: NodePort
  sessionAffinity: ClientIP
  ports:
   - name: nginx
     port: 80
     targetPort: 80
     nodePort: 32222

用于外部訪問，外部本機(jī)地址端口為32222

3野哭、無頭服務(wù)

apiVersion: v1
kind: Service
metadata:
  name: base-svc-nginx
  namespace: default
spec:
  selector:
    app: web-http
    release: stable
  type: ClusterIP
  clusterIP: None
  sessionAffinity: ClientIP
  ports:
   - name: nginx
     port: 80
     targetPort: 80

此方式不能通過集群IP進(jìn)行訪問

4在塔、LoadBalancer

apiVersion: v1
kind: Service
metadata:
  name: base-svc-nginx
  namespace: default
spec:
  selector:
    app: web-http
    release: stable
  type: LoadBalancer
  sessionAffinity: ClientIP
  ports:
   - name: nginx
     port: 80
     targetPort: 80

[root@master inventory]# kubectl get svc
NAME             TYPE           CLUSTER-IP     EXTERNAL-IP   PORT(S)        AGE
base-svc-nginx   LoadBalancer   10.98.35.142   <pending>     80:30234/TCP   11s
kubernetes       ClusterIP      10.96.0.1      <none>        443/TCP        10d

此方式適用于公有云上的 Kubernetes 服務(wù)
Kubernetes會調(diào)用 CloudProvider 在公有云上創(chuàng)建一個負(fù)載均衡服務(wù)，并且把被代理的 Pod 的 IP地址配置給負(fù)載均衡服務(wù)做后端拨黔。
此方式在本地環(huán)境不能使用

5蛔溃、ExternalName

apiVersion: v1
kind: Service
metadata:
  name: base-svc-nginx
  namespace: default
spec:
  selector:
    app: web-http
    release: stable
  type: ExternalName
  externalName: www.baidu.com
  sessionAffinity: ClientIP
  ports:
   - name: nginx
     port: 80
     targetPort: 80

此方式適用于集群內(nèi)部容器訪問外部資源

6、直接分配公網(wǎng)

apiVersion: v1
kind: Service
metadata:
  name: base-svc-nginx
  namespace: default
spec:
  selector:
    app: web-http
    release: stable
  externalIPs:
  - 168.84.68.1
  sessionAffinity: ClientIP
  ports:
   - name: nginx
     port: 80
     targetPort: 80

[root@master inventory]# kubectl get svc
NAME             TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)   AGE
base-svc-nginx   ClusterIP   10.97.84.192   168.84.68.1   80/TCP    3s
kubernetes       ClusterIP   10.96.0.1      <none>        443/TCP   10d

此方式直接將服務(wù)發(fā)布在公網(wǎng)之上