k8s入口HTTP响应对于重定向无效

如何解决k8s入口HTTP响应对于重定向无效

我遇到了一个非常有趣的情况。我正在Docker容器内运行apache服务器，并运行mediawiki安装。

运行curl localhost:8081 -v时，我得到一个有效的响应。同样在浏览器中访问该网站会将我重定向到预期的主页：

*   Trying 127.0.0.1...
* TCP_NODELAY set
* Connected to localhost (127.0.0.1) port 8081 (#0)
> GET / HTTP/1.1
> Host: localhost:8081
> User-Agent: curl/7.64.1
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Date: Sun,01 Nov 2020 05:18:33 GMT
< Server: Apache/2.4.38 (Debian)
< X-Powered-By: PHP/7.3.24
< X-Content-Type-Options: nosniff
< Vary: Accept-Encoding,Cookie
< Expires: Sun,01 Nov 2020 05:18:33 GMT
< Cache-Control: private,must-revalidate,max-age=0
< Last-Modified: Sun,01 Nov 2020 05:18:33 GMT
< Location: http://wiki.10.0.0.20.xip.io/wiki/Main_Page
< Connection: close
< Content-Encoding: none
< Content-Length: 0
< X-Request-Id: 76816afe025ea1c1ced4d30d
< Content-Type: text/html; charset=utf-8
<
* Closing connection 0

另一方面，当我通过nginx入口发出请求时，得到以下信息：

*   Trying 10.0.0.20...
* TCP_NODELAY set
* Connected to wiki.10.0.0.20.xip.io (10.0.0.20) port 80 (#0)
> GET / HTTP/1.1
> Host: wiki.10.0.0.20.xip.io
> User-Agent: curl/7.64.1
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Server: nginx/1.19.1
< Date: Sun,01 Nov 2020 05:25:49 GMT
< Content-Type: text/html; charset=utf-8
< Content-Length: 0
< Connection: keep-alive
< X-Powered-By: PHP/7.3.24
< X-Content-Type-Options: nosniff
< Vary: Accept-Encoding,01 Nov 2020 05:25:49 GMT
< Cache-Control: private,01 Nov 2020 05:25:49 GMT
< Location: http://wiki.10.0.0.20.xip.io/wiki/Main_Page
< Content-Encoding: none
< X-Request-Id: d6457fbb4f7cc3d0003206eb
<
* Connection #0 to host wiki.10.0.0.20.xip.io left intact
* Closing connection 0

如您所见，两个响应中的Location标头是相同的。在我眼中，唯一的区别是Connection: keep-alive标头，Apache将该标头设置为close。是否禁止301结果？

当我尝试在Chrome / Safari中打开页面时，pod服务器可以正常工作，但是入口显示ERR_EMPTY_RESPONSE错误消息，没有任何进一步的指示。此外，将任何查询参数传递给网址，例如?a，都可以正确显示起始页。这很可能是因为MediaWiki捕获了任何无效的URL，并将其重定向到起始页。

我的入口配置如下：

apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: example-ingress
  annotations:
    nginx.ingress.kubernetes.io/rewrite-target: /$1
    nginx.ingress.kubernetes.io/ssl-redirect: "false"
spec:
  rules:
    - host: wiki.10.0.0.20.xip.io
      http:
        paths:
          - path: /(.*)
            pathType: Prefix
            backend:
              service:
                name: mediawiki
                port:
                  number: 80

已经通过minikube创建了kubernetes环境。我正在使用VirtualBox的本地NAT网络适配器。但是对于桥接网络，另一台计算机也是如此。您可以看到连接已建立，就像我看到的301一样。它还路由到mediawiki / PHP，但随后的响应就无效了。

我按如下方式部署了该服务：

apiVersion: v1
kind: Service
metadata:
  name: mediawiki
spec:
  type: NodePort
  selector:
    app: mediawiki
  ports:
    - protocol: TCP
      port: 80
      nodePort: 30090

部署如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mediawiki
  labels:
    app: mediawiki
spec:
  replicas: 1
  selector:
    matchLabels:
      app: mediawiki
  template:
    metadata:
      labels:
        app: mediawiki
    spec:
      containers:
      - name: mediawiki
        image: mediawiki
        ports:
        - containerPort: 80
        volumeMounts:
        - name: localsettings
          mountPath: "/var/www/html/LocalSettings.php"
          readOnly: true
          subPath: LocalSettings.php
        - name: logo
          mountPath: "/var/www/html/resources/assets/wiki.png"
          readOnly: true
          subPath: logo.png
      volumes:
        - name: localsettings
          configMap:
            name: localsettings
        - name: logo
          configMap:
            name: logo