Traefik 路径中的服务不会重定向到其他请求的服务路径

Question

我有一个带有子域的虚拟机 - 例如。 mysubdomain.notmydomain.com，如下面的日志所示——运行单节点 Docker Swarm（为简单起见）并使用 Traefik 作为各种服务的反向代理。我设法将不同服务的问题简化为我现在在这里分享的问题。

预期行为：我访问了 mysubdomain.notmydomain.com/test，看到了带有文本和渲染徽标的响应。

实际行为：：我看到一个断开的链接（见图）

版本

Ubuntu 16.04.1 LTS xenial

Docker 版本 18.03.0-ce，构建 0520e24

Traefik 1.5.4

截断的 docker-compose 文件

version: '3.4'

services:
  test:
    image: tutum/hello-world
    networks:
      - traefik-network
    deploy:
      labels:
        traefik.enable: "true"
        traefik.backend: "test"
        traefik.docker.network: "cat_traefik-network"
        traefik.frontend.rule: "Host:mysubdomain.notmydomain.com;PathPrefix:/test"
        traefik.port: 80
        traefik.frontend.passHostHeader: "true"
        traefik.domain: "mysubdomain.notmydomain.com"
  traefik:
    image: traefik
    ports: ["80:80", "443:443", "8080:8080"]
    volumes:
    - /var/run/docker.sock:/var/run/docker.sock
    - ./traefik/traefik.toml:/traefik.toml
    - ./traefik/acme.json:/acme.json
    networks:
    - traefik-network
    - mosquitto-network
    command:
      --api \
      --docker \
      --docker.swarmmode \
      --docker.domain=mysubdomain.notmydomain.com \
      --docker.watch \
      --logLevel=DEBUG
    deploy:
      placement:
        constraints: [node.role==manager]
      labels:
       traefik.enable: "false"

显示意外行为的屏幕截图

来自 Traefik 的日志

cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/roundrobin/rr: begin ServeHttp on request" Request="{"Method":"GET","URL":{"Scheme":"","Opaque":"","User":null,"Host":"","Path":"/test","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}"
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/roundrobin/rr: Forwarding this request to URL" Request="{"Method":"GET","URL":{"Scheme":"","Opaque":"","User":null,"Host":"","Path":"/test","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}" ForwardURL=http://10.0.2.7:80
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/forward: begin ServeHttp on request" Request="{"Method":"GET","URL":{"Scheme":"http","Opaque":"","User":null,"Host":"10.0.2.7:80","Path":"","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}"
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/forward/http: begin ServeHttp on request" Request="{"Method":"GET","URL":{"Scheme":"http","Opaque":"","User":null,"Host":"10.0.2.7:80","Path":"","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}"
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/forward/http: Round trip: http://10.0.2.7:80, code: 200, Length: 478, duration: 8.138087ms"
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/forward/http: completed ServeHttp on request" Request="{"Method":"GET","URL":{"Scheme":"http","Opaque":"","User":null,"Host":"10.0.2.7:80","Path":"","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}"
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/forward: completed ServeHttp on request" Request="{"Method":"GET","URL":{"Scheme":"http","Opaque":"","User":null,"Host":"10.0.2.7:80","Path":"","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}"
cat_traefik.1.ifbq38ugx76r@cat    | time="2018-04-03T20:42:39Z" level=debug msg="vulcand/oxy/roundrobin/rr: competed ServeHttp on request" Request="{"Method":"GET","URL":{"Scheme":"","Opaque":"","User":null,"Host":"","Path":"/test","RawPath":"","ForceQuery":false,"RawQuery":"","Fragment":""},"Proto":"HTTP/1.1","ProtoMajor":1,"ProtoMinor":1,"Header":{"Accept":["text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8"],"Accept-Encoding":["gzip, deflate"],"Accept-Language":["en-GB,en-US;q=0.9,en;q=0.8"],"Cache-Control":["max-age=0"],"Connection":["keep-alive"],"Cookie":["redirect_to=%252F"],"Upgrade-Insecure-Requests":["1"],"User-Agent":["Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36"]},"ContentLength":0,"TransferEncoding":null,"Host":"mysubdomain.notmydomain.com","Form":null,"PostForm":null,"MultipartForm":null,"Trailer":null,"RemoteAddr":"10.255.0.2:54617","RequestURI":"/test","TLS":null}"

日志显示前几个请求包含Path:/test，而最后一个请求包含Path:/。我认为这就是问题所在。

问题：我需要如何或什么重新配置才能使包含 logo.png 的 tutum/hello-world 容器上的辅助请求正确加载？

tutum/hello-world 图像被选择用于测试，并作为一个明确的例子；实际堆栈包含 mosquitto、grafana、influxdb 和一些自定义服务，它们都显示相同的根行为。 （那些有frontend.rule的）`

欢迎提出任何建议；我可以在需要时提供更多信息。

Answer 1

来自 Github 问题 #3124 Julien Salleyron：

感谢您对 Træfik 的关注！

这不是问题。 Træfik 不会重写响应正文。我们认为 在反向代理中重写响应体的过程是 太重/容易出错。

我们鼓励您：

• 仅使用基于主机的规则（您的用例似乎不可能）
• 在您的应用中使用特定的 Traefik 路径重写标头（X-Forwarded-Prefix、X-Replaced-Path）
• 让您的应用在特定路径上侦听