traefik是一个http反向代理、负载均衡工具.

traefik支持较多的后端协议(http[s]、Websocket、TCP)

traefik支持多种容器框架(docker compose、Swarm、k8s、Mesos), 能识别API后台热更新配置.

1，创建Traefik

安装docker，自行百度

 1# traefik配置文件 traefik.toml
 2
 3[global]
 4  checkNewVersion = false
 5  sendAnonymousUsage = false
 6
 7[log]
 8  level = "WARN"
 9  format = "common"
10
11[api]
12  dashboard = true
13  insecure = true
14
15[ping]
16
17[accessLog]
18
19[providers]
20  [providers.docker]
21    watch = true
22    exposedByDefault = false
23    endpoint = "unix:///var/run/docker.sock"
24    swarmMode = false
25    useBindPortIP = false
26    network = "traefik"
27  [providers.file]
28    watch = true
29    directory = "/etc/traefik/config"
30    debugLogGeneratedTemplate = true
31
32[entryPoints]
33  [entryPoints.http]
34    address = ":80"
35  [entryPoints.https]
36    address = ":443"

 1#docker-compose.yml
 2
 3version: '3.7'
 4
 5services:
 6
 7  traefik:
 8    container_name: traefik
 9    image: traefik:v2.1.3
10    restart: always
11    ports:
12      - 80:80
13      - 443:443
14      - 8080:8080
15    networks:
16      - traefik
17    command: traefik --configFile /etc/traefik.toml
18    volumes:
19      - /var/run/docker.sock:/var/run/docker.sock:ro
20      - ./traefik.toml:/etc/traefik.toml:ro
21      - ./config/:/etc/traefik/config/:ro
22    healthcheck:
23      test: ["CMD-SHELL", "wget -q --spider --proxy off localhost:8080/ping || exit 1"]
24
25# 先创建外部网卡
26# docker network create traefik
27networks:
28  traefik:
29    external: true
30

1.1 操作顺序

1，创建 traefik 文件目录

2，分别创建并保存（配置内容看上方），docker-compose.yml，traefik.toml

3，启动 docker-compose down && docker-compose up -d

4, 验证 浏览器输入ip 地址看到 404 即可成功；

5，访问8080 端口可看到 traefik dashboard 界面（下图）；

Center

2，创建Nginx

 1# docker-compose.yml
 2version: "3.6"
 3    
 4    services:
 5    
 6      web_nginx:
 7        image: nginx:1.17.1-alpine
 8        restart: always
 9        expose:
10          - 80
11        networks:
12          - traefik
13        labels:
14          - "traefik.enable=true"
15          - "traefik.docker.network=traefik"
16          - "traefik.http.routers.web_nginx.entrypoints=http"
17          - "traefik.http.routers.web_nginx.rule=Host(`web_nginx.halobug.cn`)"
18          - "traefik.http.services.web_nginx-backend.loadbalancer.server.scheme=http"
19          - "traefik.http.services.web_nginx-backend.loadbalancer.server.port=80"
20        logging:
21          driver: "json-file"
22          options:
23            max-size: "1m"
24    networks:
25      traefik:
26        external: true

2.1 操作顺序

1，创建 web_nginx 文件目录

2，分别创建并保存（配置内容看上方），docker-compose.yml

3，启动命令稍有不同，docker-compose down && docker-compose up --scale web_nginx=10 -d

4，绑定hosts，127.0.0.1 web_nginx.halobug.cn

5，浏览器访问,http://web_nginx.halobug.cn

6，查看 traefik dashboard，http://127.0.0.1:8080/dashboard

7 ,查看日志 ，docker-compose logs -f
2.1.3,nginx容器启动成功后如下图

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2.1.5,访问浏览器刷新多次，后查看日志

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2.1.6,看到启动的web服务

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2.1.7,log日志显示，已经负载到了每个容器

Center