环境
- kubernetes 1.20.6
- Spring Boot 2.5.0-M3
目标
ingressClassName 可以指定选择的 Ingress Controller，使用名称选择，一般有多个控制器的时候使用。
之前部署 Nginx Ingress Controller 的名称是 nginx。
示例
前提
[root@master ~]# kubectl get deployments,pod,service
NAME READY UP-TO-DATE AVAILABLE AGE
deployment.apps/spring-k8s 1/1 1 1 10d
NAME READY STATUS RESTARTS AGE
pod/spring-k8s-79f74b55d7-tjh7c 1/1 Running 2 10d
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/kubernetes ClusterIP 10.96.0.1 <none> 443/TCP 10d
service/spring-k8s ClusterIP 10.105.119.22 <none> 80/TCP 10d
ing.yaml
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: spring-k8s
spec:
ingressClassName: nginx
defaultBackend:
service:
name: spring-k8s
port:
number: 80
查看列表
[root@master ~]# kubectl get ing
NAME CLASS HOSTS ADDRESS PORTS AGE
spring-k8s nginx * 10.105.218.18 80 47m
访问测试
[root@master ~]# curl spring.k8s.jiangbo:31136/hostname;echo
spring-k8s-79f74b55d7-tjh7c
不引用 nginx
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
name: spring-k8s
spec:
ingressClassName: nginx1
defaultBackend:
service:
name: spring-k8s
port:
number: 80
访问不通
[root@master ~]# kubectl get ing
NAME CLASS HOSTS ADDRESS PORTS AGE
spring-k8s nginx1 * 10.105.218.18 80 48m
[root@master ~]# curl spring.k8s.jiangbo:31136/hostname;echo
<html>
<head><title>404 Not Found</title></head>
<body>
<center><h1>404 Not Found</h1></center>
<hr><center>nginx</center>
</body>
</html>
总结
ingressClassName 可以指定选择的 Ingress Controller。