TechOverflow Logo
TechOverflow

如何修复 Traefik Could not define the service name for the router: too many services

English Deutsch 简体中文

问题：

Traefik 不加载你的一些服务，你看到类似以下的错误消息：

traefik_error.txt
traefik_1  | time="2022-03-27T15:22:05Z" level=error msg="Could not define the service name for the router: too many services" routerName=myapp providerName=docker

使用带有多个路由器的 docker 标签配置，如下所示：

traefik_labels.yml
labels:
    - "traefik.enable=true"
    - "traefik.http.routers.myapp-console.rule=Host(`console.myapp.mydomain.com`)"
    - "traefik.http.routers.myapp-console.entrypoints=websecure"
    - "traefik.http.routers.myapp-console.tls.certresolver=alpn"
    - "traefik.http.services.myapp-console.loadbalancer.server.port=9001"
    #
    - "traefik.http.routers.myapp.rule=Host(`myapp.mydomain.com`)"
    - "traefik.http.routers.myapp.entrypoints=websecure"
    - "traefik.http.routers.myapp.tls.certresolver=cloudflare-techoverflow"
    - "traefik.http.routers.myapp.tls.domains[0].main=mydomain.com"
    - "traefik.http.routers.myapp.tls.domains[0].sans=*.mydomain.com"
    - "traefik.http.services.myapp.loadbalancer.server.port=9000"

解决方案

这里的基本问题是你为单个 docker 容器定义了多个路由器，而 Traefik 不知道哪个 http.services 属于哪个 http.routers！

为了修复此问题，明确告诉 traefik 每个路由器应该使用什么服务，如下所示：

traefik_labels_example.yml
- "traefik.http.routers.myapp-console.service=myapp-console"

完整示例：

traefik_labels_full_example.yml
labels:
    - "traefik.enable=true"
    - "traefik.http.routers.myapp-console.rule=Host(`console.myapp.mydomain.com`)"
    - "traefik.http.routers.myapp-console.entrypoints=websecure"
    - "traefik.http.routers.myapp-console.tls.certresolver=alpn"
    - "traefik.http.routers.myapp-console.service=myapp-console"
    - "traefik.http.services.myapp-console.loadbalancer.server.port=9001"
    #
    - "traefik.http.routers.myapp.rule=Host(`myapp.mydomain.com`)"
    - "traefik.http.routers.myapp.entrypoints=websecure"
    - "traefik.http.routers.myapp.tls.certresolver=cloudflare-techoverflow"
    - "traefik.http.routers.myapp.tls.domains[0].main=mydomain.com"
    - "traefik.http.routers.myapp.tls.domains[0].sans=*.mydomain.com"
    - "traefik.http.routers.myapp.service=myapp"
    - "traefik.http.services.myapp.loadbalancer.server.port=9000"
Check out similar posts by category: Container, Docker, Networking, Traefik