Kubernetes Ingress: 无法连接？

huangapple
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英文:

Kubernetes ingress: could not connect?

问题

Traffic flow to implement:

客户端 ---> Ingress（SSL，负载均衡器） --> 我的网站（服务） -> PODs

Ingress：

  1. apiVersion: networking.k8s.io/v1
  2. kind: Ingress
  3. metadata:
  4.   name: foo
  6. spec:
  7.   ingressClassName: nginx
  9.   rules:
  10.     - host: "test.foo.com"
  11.       http:
  12.         paths:
  13.           - pathType: Prefix
  14.             path: "/"
  15.             backend:
  16.               service:
  17.                 name: my_web
  18.                 port:
  19.                   number: 8080

无法连接到 Ingress 的端口 80：

  1. curl http://test.foo.com:80      <--- 无法连接

test.foo.com 在 hosts 文件中映射到 127.0.0.1。

可以直接连接到 my_web 服务（负载均衡器）：

  1. curl http://localhost:8080    <---- 成功

Ingress 是否外部暴露任何端口？

my_web_service.yaml

  1. apiVersion: v1
  2. kind: Service
  3. metadata:
  4.   name: my_web
  5.   labels:
  6.     app: my_web
  7. spec:
  8.   ports:
  9.     - name: http
  10.       port: 8080
  11.       targetPort: 8080
  12.   selector:
  13.     app: my_web
  14.   type: LoadBalancer

my_web_deployment.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: my_web
  5.   labels:
  6.     app: my_web
  7. spec:
  8.   selector:
  9.     matchLabels:
  10.       app: my_web
  11.   template:
  12.     metadata:
  13.       labels:
  14.         app: my_web
  15.     spec:
  16.       containers:
  17.         - image: my_web:latest
  18.           name: my_web
  19.           ports:
  20.             - containerPort: 8080
英文:

Traffic flow to implement:

  1. client ---> Ingress (SSL,LoadBalancer) --> my_web(service) -> PODs

Ingress:

  1. apiVersion: networking.k8s.io/v1
  2. kind: Ingress
  3. metadata:
  4.   name: foo
  6. spec:
  7.   ingressClassName: nginx
  9.   rules:
  10.     - host: "test.foo.com"
  11.       http:
  12.         paths:
  13.           - pathType: Prefix
  14.             path: "/"
  15.             backend:
  16.               service:
  17.                 name: my_web
  18.                 port:
  19.                   number: 8080

Could not connect ingress port 80:

  1. curl http://test.foo.com:80      <--- could not connect

test.foo.com is mapped to 127.0.0.1 in hosts file.

Could connect to the my_web service (loadBalancer) directly

  1. curl http://localhost:8080    <---- success

Does ingress expose any port externally?

my_web_service.yaml

  1. apiVersion: v1
  2. kind: Service
  3. metadata:
  4.   name: my_web
  5.   labels:
  6.     app: my_web
  7. spec:
  8.   ports:
  9.     - name: http
  10.       port: 8080
  11.       targetPort: 8080
  12.   selector:
  13.     app: my_web
  14.   type: LoadBalancer

my_web_deployment.yaml

  1. apiVersion: apps/v1
  2. kind: Deployment
  3. metadata:
  4.   name: my_web
  5.   labels:
  6.     app: my_web
  7. spec:
  8.   selector:
  9.     matchLabels:
  10.       app: my_web
  11.   template:
  12.     metadata:
  13.       labels:
  14.         app: my_web
  15.     spec:
  16.       containers:
  17.         - image: my_web:latest
  18.           name: my_web
  19.           ports:
  20.             - containerPort: 8080

答案1

得分: 1

Ingress本身不会暴露端口，除非您为Ingress实现配置了负载均衡服务。

在您的情况下，请使用：

curl http://test.foo.com:8080

英文:

Ingress itself does not expose ports if you don't configure a loadbalancer service for the ingress implementation.

Use

curl http://test.foo.com:8080

in your case

huangapple
  • 本文由 发表于 2023年5月22日 18:50:53
  • 转载请务必保留本文链接：https://go.coder-hub.com/76305424.html
  • kubernetes
  • kubernetes-ingress
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