【发布时间】：2021-07-04 22:00:08
【问题描述】：
我正在尝试使用我在https://dockerswarm.rocks/traefik/ 上找到的这个 .yml 文件在 docker swarm 上部署 traefik：
> version: '3.3'
>
> services:
>
> traefik:
> # Use the latest v2.2.x Traefik image available
> image: traefik:v2.2
> ports:
> # Listen on port 80, default for HTTP, necessary to redirect to HTTPS
> - 80:80
> # Listen on port 443, default for HTTPS
> - 443:443
> deploy:
> placement:
> constraints:
> # Make the traefik service run only on the node with this label
> # as the node with it has the volume for the certificates
> - node.labels.traefik-public.traefik-public-certificates == true
> labels:
> # Enable Traefik for this service, to make it available in the public network
> - traefik.enable=true
> # Use the traefik-public network (declared below)
> - traefik.docker.network=traefik-public
> # Use the custom label "traefik.constraint-label=traefik-public"
> # This public Traefik will only use services with this label
> # That way you can add other internal Traefik instances per stack if needed
> - traefik.constraint-label=traefik-public
> # admin-auth middleware with HTTP Basic auth
> # Using the environment variables USERNAME and HASHED_PASSWORD
> - traefik.http.middlewares.admin-auth.basicauth.users=${USERNAME?Variable
> not set}:${HASHED_PASSWORD?Variable not set}
> # https-redirect middleware to redirect HTTP to HTTPS
> # It can be re-used by other stacks in other Docker Compose files
> - traefik.http.middlewares.https-redirect.redirectscheme.scheme=https
> - traefik.http.middlewares.https-redirect.redirectscheme.permanent=true
> # traefik-http set up only to use the middleware to redirect to https
> # Uses the environment variable DOMAIN
> - traefik.http.routers.traefik-public-http.rule=Host(`${DOMAIN?Variable
> not set}`)
> - traefik.http.routers.traefik-public-http.entrypoints=http
> - traefik.http.routers.traefik-public-http.middlewares=https-redirect
> # traefik-https the actual router using HTTPS
> # Uses the environment variable DOMAIN
> - traefik.http.routers.traefik-public-https.rule=Host(`${DOMAIN?Variable
> not set}`)
> - traefik.http.routers.traefik-public-https.entrypoints=https
> - traefik.http.routers.traefik-public-https.tls=true
> # Use the special Traefik service api@internal with the web UI/Dashboard
> - traefik.http.routers.traefik-public-https.service=api@internal
> # Use the "le" (Let's Encrypt) resolver created below
> - traefik.http.routers.traefik-public-https.tls.certresolver=le
> # Enable HTTP Basic auth, using the middleware created above
> - traefik.http.routers.traefik-public-https.middlewares=admin-auth
> # Define the port inside of the Docker service to use
> - traefik.http.services.traefik-public.loadbalancer.server.port=8080
> volumes:
> # Add Docker as a mounted volume, so that Traefik can read the labels of other services
> - /var/run/docker.sock:/var/run/docker.sock:ro
> # Mount the volume to store the certificates
> - traefik-public-certificates:/certificates
> command:
> # Enable Docker in Traefik, so that it reads labels from Docker services
> - --providers.docker
> # Add a constraint to only use services with the label "traefik.constraint-label=traefik-public"
> - --providers.docker.constraints=Label(`traefik.constraint-label`, `traefik-public`)
> # Do not expose all Docker services, only the ones explicitly exposed
> - --providers.docker.exposedbydefault=false
> # Enable Docker Swarm mode
> - --providers.docker.swarmmode
> # Create an entrypoint "http" listening on port 80
> - --entrypoints.http.address=:80
> # Create an entrypoint "https" listening on port 443
> - --entrypoints.https.address=:443
> # Create the certificate resolver "le" for Let's Encrypt, uses the environment variable EMAIL
> - --certificatesresolvers.le.acme.email=${EMAIL?Variable not set}
> # Store the Let's Encrypt certificates in the mounted volume
> - --certificatesresolvers.le.acme.storage=/certificates/acme.json
> # Use the TLS Challenge for Let's Encrypt
> - --certificatesresolvers.le.acme.tlschallenge=true
> # Enable the access log, with HTTP requests
> - --accesslog
> # Enable the Traefik log, for configurations and errors
> - --log
> # Enable the Dashboard and API
> - --api
> networks:
> # Use the public network created to be shared between Traefik and
> # any other service that needs to be publicly available with HTTPS
> - traefik-public
>
> volumes: # Create a volume to store the certificates, there is a
> constraint to make sure # Traefik is always deployed to the same
> Docker node with the same volume containing # the HTTPS certificates
> traefik-public-certificates:
>
> networks: # Use the previously created public network
> "traefik-public", shared with other # services that need to be
> publicly available via this Traefik traefik-public:
> external: true
我尝试了我的虚拟机的外部 IP 地址，但我得到一个 404 错误页面未找到。 查看日志，发现有DNS错误
msg="无法获取域的 ACME 证书 “traefik.domain.com”：无法为域生成证书 [traefik.domain.com]：错误：一个或多个域具有 问题：\n[traefik.domain.com] acme：错误：400 :: urn:ietf:params:acme:error:dns :: DNS 问题：NXDOMAIN 查找 A 对于 traefik.domain.com - 检查该域是否存在 DNS 记录， url:\n" providerName=le.acme routerName=traefik-public-https@docker rule="主机(
traefik.domain.com)"
谢谢！
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标签： docker proxy dns docker-swarm traefik