为什么 URL 当我最后不使用斜杠时重写不起作用？

Question

我有一个简单的入口配置文件-

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /link2/link3/
  name: tut-ingress
  namespace: default
spec:
  rules:
    - host: tutorial.com
      http:
        paths:
          - path: /link1/
            pathType: Prefix
            backend:
              service:
                name: nginx-ingress-tut-service
                port:
                  number: 8080

其中到达 /link1 或 /link1/ 的请求被重写为 /link2/link3/。当我使用 http://tutorial.com/link1/ 访问它时我看到了正确的结果，但是当我使用它访问它时 http://tutorial.com/link1，我收到 404 未找到。 nginx-ingress-tut-service 具有以下端点-

/
/link1
/link2/link3

我是 web 领域的初学者，任何帮助将不胜感激。

当我把它改成-

- path: /link1

它开始工作正常，但谁能告诉我为什么它不能与 /link1/ 一起工作。

有用的资源 - https://kubernetes.io/docs/concepts/services-networking/ingress/#examples

https://kubernetes.github.io/ingress-nginx/examples/rewrite/

编辑 - 请同时解释当您在 link 中编写完整的 HTTP 时会发生什么 nginx.ingress.kubernetes.io/rewrite-target

Answer 1

答案发表在评论中：

Well, /link1/ is not a prefix of /link1 because a prefix must be the same length or longer than the target string

如果你有

- path: /link1/

要匹配的字符串必须在路径末尾有一个 / 字符。一切正常。在这种情况下，如果您尝试通过 link http://tutorial.com/link1 访问，您将收到 404 错误，因为入口期望 http://tutorial.com/link1/.

更多可以看examples of rewrite rule and documentation about path types:

Each path in an Ingress is required to have a corresponding path type. Paths that do not include an explicit pathType will fail validation. There are three supported path types:

ImplementationSpecific: With this path type, matching is up to the IngressClass. Implementations can treat this as a separate pathType or treat it identically to Prefix or Exact path types.

Exact: Matches the URL path exactly and with case sensitivity.

Prefix: Matches based on a URL path prefix split by /. Matching is case sensitive and done on a path element by element basis. A path element refers to the list of labels in the path split by the / separator. A request is a match for path p if every p is an element-wise prefix of p of the request path.

编辑： 根据文档，这应该有效，但看起来有一个 fresh problem with nginx ingress. The problem is still unresolved. You can use workaround posted in this topic 或尝试像这样改变你的你：

- path: /link1(/|$)

为什么 URL 当我最后不使用斜杠时重写不起作用？

Why URL re-writing is not working when I do not use slash at the end?

kubernetes

url

url-rewriting

kubernetes-ingress