kubernetes-ingress - 使用 Nginx Ingress Controller 获取所有主机都被其他资源占用

Question

我已经按照文档中的说明设置了 Nginx Controller https://docs.nginx.com/nginx-ingress-controller/installation/installation-with-manifests/ .我已经使用以下配置设置了 Ingress

入口类

apiVersion: networking.k8s.io/v1beta1
kind: IngressClass
metadata:
  name: nginx
  # annotations:
  #   ingressclass.kubernetes.io/is-default-class: "true"
spec:
  controller: nginx.org/ingress-controller

入口

apiVersion: networking.k8s.io/v1beta1
kind: Ingress
metadata:
  name: hn-service-ingress
spec:
  ingressClassName: nginx
  rules:
  - host: hostnameservice.classpath.com
    http:
      paths:
      - path: /test
        backend:
          serviceName: hostname-service
          servicePort: 80

下面是运行 describe 命令时的错误。我得到 All hosts are taken by other resources

kubectl describe ingress hn-service-ingress
Name:             hn-service-ingress
Namespace:        pradeep
Address:
Default backend:  default-http-backend:80 (<error: endpoints "default-http-backend" not found>)
Rules:
  Host                           Path  Backends
  ----                           ----  --------
  hostnameservice.classpath.com
                                 /test    hostname-service:80 (100.96.1.12:8111,100.96.1.13:8111,100.96.2.13:8111)
Annotations:                     <none>
Events:
  Type     Reason    Age   From                      Message
  ----     ------    ----  ----                      -------
  Warning  Rejected  5s    nginx-ingress-controller  All hosts are taken by other resources

当我用 cafe 示例检查时，它工作正常。我哪里错了？

注意:我已经配置了 AWS 负载均衡器，并使用 dnslookup 将 /etc/hosts 设置为指向来自 AWS 的 ELB。

Answer 1

请记住 Nginx 有 3 种类型。 开源 Nginx Ingress Controller、Nginx Incorporaton (nginx inc) 和 Nginx Incorporaton Plus。

正如我在评论中提到的，问题是由使用相同 host 的资源引起的。它叫做Host Collisions .

当多个资源配置同一个主机时，就会发生主机冲突。 Ingress Controller 支持两种处理主机冲突的选项:

• Choosing the Winner

If multiple resources contend for the same host, the Ingress Controller will pick the winner based on the creationTimestamp of the resources: the oldest resource will win. In case there are more than one oldest resources (their creationTimestamp is the same), the Ingress Controller will choose the resource with the lexicographically smallest uid.

• Merging Configuration for the Same Host

It is possible to merge configuration for multiple Ingress resources for the same host. One common use case for this approach is distributing resources across multiple namespaces.

OP 确认，这已通过更改另一个 namespace 中的另一个 Ingress 资源解决。

I was able to resolve this. There was one more Ingress in another namespace