什么是traefik

Traefik is an open-source Edge Router that makes publishing your services a fun and easy experience. It receives requests on behalf of your system and finds out which components are responsible for handling them.

编写docker-compose.yml

version: '3'
services:
  traefik:
    image: traefik:2.4.0
    container_name: traefik
    labels:
    - "traefik.enable=true" #开启traefikf代理
    - "traefik.http.services.traefik.loadbalancer.server.scheme=http"
    - "traefik.http.routers.traefik.rule=Host(`www.traefik.com.cn`)" #拦截条件，当host为www.traefik.com.cn的时候，会转发到此服务
    - "traefik.http.services.traefik.loadbalancer.server.port=8080" #转发端口为8080,traefik 8080端口是dashboard
    - "traefik.http.routers.traefik.entrypoints=websecure" #暴露服务为https
    - "traefik.http.routers.traefik.tls=true" #开启tls支持，如果不开启，https会失效
    - "traefik.http.middlewares.ssl.redirectscheme.scheme=https" #定义中间件，使用的是重定向中间件，保证访问http的时候自动重定向到https
    - "traefik.http.middlewares.ssl.redirectscheme.permanent=false"
    - "traefik.http.middlewares.ssl.redirectscheme.port=443"
    - "traefik.http.routers.myrouter.middlewares=ssl@docker" #使用中间件
    ports:
    - 80:80
    - 443:443
    volumes:
    - /var/run/docker.sock:/var/run/docker.sock
    - ./config/traefik.yaml:/etc/traefik/traefik.yml
    networks:
    - traefik
networks:
  traefik: #定义网卡，以后所有被代理的服务都必须使用此网卡，不然会导致网络无法通讯
    driver: bridge
    ipam:
      driver: default
      config:
      - subnet: "10.100.0.0/16"

traefik配置文件

global:
  checkNewVersion: true
  sendAnonymousUsage: true
entryPoints:
  web: #同docker-compose里面携带entrypoints里面使用的必须一致
    address: :80
  websecure:
    address: :443
log:
  level: DEBUG
  filePath: /opt/traefik/logs/traefik.log
  format: json
accessLog:
  filePath: /opt/traefik/logs/access.log
  format: json
api:
  dashboard: true
  insecure: true
providers:
  docker:
    endpoint: unix:///var/run/docker.sock

执行docker-compose

docker-compose up -d

在windows上配置域名映射

添加对应的域名，因为上面写的是hostname匹配模式

浏览器访问

浏览器输入地址https://www.traefik.com.cn

修改之前的tomcat项目

实现使用traefik转发到tomcat
tomcat博客地址： docker篇-(docker安装tomcat2-基于Dockerfile构建tomcat)

tomcat目录里面的docker-compose.yml修改如下

version: '3'
services:
  tomcat: 
    build: .
    image: tomcat:9.0.44-alpine
    container_name: tomcat
    labels: # 添加traefik需要的标签信息
    - "traefik.enable=true"
    - "traefik.http.routers.tomcat.rule=Host(`www.tomcat.com.cn`)"
    - "traefik.http.services.tomcat.loadbalancer.server.scheme=http"
    - "traefik.http.services.tomcat.loadbalancer.server.port=8080"
    - "traefik.http.routers.tomcat.entrypoints=websecure"
    - "traefik.http.routers.tomcat.tls=true"
    - "traefik.http.routers.myrouter.middlewares=ssl@docker" #因为traefik服务上面定义了中间件，这里直接使用
    networks:
    - tomcat
    #  tomcat
    #    ipv4_address: "10.10.10.80" #固定ip
networks: #配置网卡
  tomcat: #网卡名称
    external:
      name: traefik_traefik #这里使用traefik那张网卡
    #driver: bridge #网卡驱动
    #ipam:
    #  driver: default
    #  config:
    #  - subnet: 10.10.0.0/16 #配置子网

查看traefik控制台里面的服务信息

配置tomcat的域名映射

通过浏览器输入https://www.tomcat.com.cn访问

最后

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