docker - 使用Traefik将正则表达式将URL重定向到另一个URL

Question

我想通过traefik将一个URL重定向到另一个URL。

我正在使用docker进行此配置，以下是我的docker-compose.yml文件

version: '3'

services:
  reverse-proxy:
    # The official v2.0 Traefik docker image
    image: containous/whoami
    container_name: "whoami_cont"
    # Enables the web UI and tells Traefik to listen to docker
    ports:
      # The HTTP port
      - 80:80
      # The Web UI (enabled by --api.insecure=true)
      - 8080:8080
    labels:
      - traefik.http.middlewares.test-replacepathregex.replacepathregex.regex=^(https?|ftp|file)://[-a-zA-Z0-9+&@#/%?=~_|!:,.;]*[-a-zA-Z0-9+&@#/%=~_|]
      - traefik.http.middlewares.test-replacepathregex.replacepathregex.replacement=http://localhost:8081/4

然后我正在成功运行docker-compose命令。然后，我将命中任何与正则表达式模式匹配的URL，但该URL不会重定向到另一个URL-按照配置 http://localhost:8081/4。
我正在使用traefik 2.0版

请让我知道是否缺少任何配置。

Answer 1

在official example之后，似乎您的配置缺少实际的Traefik实例:

  traefik:
    image: "traefik:v2.0.0-rc3"
    container_name: "traefik"
    command:
      - "--log.level=DEBUG"
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web.address=:80"
    ports:
      - "80:80"
      - "8080:8080"
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock:ro"

将Traefik添加到您的docker-compose文件并定义 middleware之后，您应该将中间件附加到路由器:

      - "traefik.http.routers.whoami.middlewares=test-replacepathregex"
      - "traefik.http.middlewares.test-replacepathregex.replacepathregex.regex=^/foo/(.*)"
      - "traefik.http.middlewares.test-replacepathregex.replacepathregex.replacement=/bar/$$1"

将 /foo/123替换为 /bar/123的完整且有效(但简化)的示例:

version: "3.3"

services:
  traefik:
    image: "traefik:v2.0.0-rc3"
    container_name: "traefik"
    command:
      - "--log.level=DEBUG"
      - "--api.insecure=true"
      - "--providers.docker=true"
      - "--providers.docker.exposedbydefault=false"
      - "--entrypoints.web.address=:80"
    ports:
      - "80:80"
      - "8080:8080"
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock:ro"

  whoami:
    image: "containous/whoami"
    container_name: "simple-service"
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.whoami.rule=Host(`localhost`)"
      - "traefik.http.routers.whoami.entrypoints=web"
      - "traefik.http.routers.whoami.middlewares=test-replacepathregex"
      - "traefik.http.middlewares.test-replacepathregex.replacepathregex.regex=^/foo/(.*)"
      - "traefik.http.middlewares.test-replacepathregex.replacepathregex.replacement=/bar/$$1"