How to call whoami in https? I get a 404 error

GED8006 · February 29, 2024, 11:45am

Good morning,

I need help, my hours of reading did not allow me to successfully call WHOAMI in https. I get a 404 error. However, I successfully made this type of call with Dozzle in a similar context. I tried to go with the docker providers, but also with the file providers that I show you below. I have access to whoami URL 192.168.2.81:8086 through my browser. I also temporarily disabled my synology firewall to remove this variable from the equation.

Thanks for your help.

My container is installed on a Synology NAS

# Docker-compose

version: "3.3"

services:
  traefik:
    image: "traefik:v2.11"
    command:
      - "--api.dashboard=true"
      - "--api.insecure=true"
      - "--api.debug=true"
    container_name: "traefik"
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    ports:
      - published: 4888 # web
        target: 80
        protocol: tcp
        mode: host
      - published: 4333 # websecure
        target: 443
        protocol: tcp
        mode: host
      - published: 8555 # UI
        target: 8080
        protocol: tcp
        mode: host
    volumes:
      - /volume1/docker/traefik/traefik.yaml:/etc/traefik/traefik.yaml
      - /volume1/docker/traefik/dynamic:/etc/traefik/dynamic
      - /volume1/docker/traefik/certificats:/etc/traefik/certs:ro

  whoami:
    image: "traefik/whoami"
    container_name: "traefik-whoami"
    ports:
      - published: 8666
        target: 80
        protocol: tcp
        mode: host

# traefik.yml (Static file)

global:
  checkNewVersion: true
  sendAnonymousUsage: false

entryPoints:
  web:
    address: ":80"
  websecure:
    address: ":443"    
    http:
      tls:
        domains:
          - main: "abc.synology.me"
            sans:
              - "*.abc.synology.me"
    
providers:
  file:
    directory: etc/traefik/dynamic
    watch: true

tls:
  certificates:
    - certFile: /etc/traefik/certs/cert.pem
      keyFile: /etc/traefik/certs/privkey.pem
    
api:
  dashboard: true
  insecure: true
  debug: true
  
log:
  level: DEBUG
  
accessLog: {}

# config.yml (dynamic file)

http:  
  routers:
    dozzle-router:
      rule: "Host(`dozzle.abc.synology.me`)"
      service: dozzle-service
      entryPoints:
        - websecure

    whoami-router:
      rule: "Host(`whoami.abc.synology.me`)"
      service: whoami-service
      entryPoints:
        - secureweb    

  services:
    dozzle-service:
      loadBalancer:
        serversTransport: insecureTransport
        servers:
          - url: http://192.168.2.81:8001/    

    whoami-service:
      loadBalancer:
        serversTransport: insecureTransport
        servers:
          - url: http://192.168.2.81:8086/         
          
  serversTransports:
    insecureTransport:
      insecureSkipVerify: true

bluepuma77 · February 29, 2024, 5:03pm

You can only have one static config, traefik.yml file or command:.

TLS certificates need to be defined in a dynamic config file, not static config.

Dashboard needs /dashboard/ path when called in browser.

When you use Docker, why not use Configuration Discovery, see simple Traefik example.

GED8006 · February 29, 2024, 8:00pm

Thanks!

I followed your advice. I decided to only use the docker-compose commands like your example. I can now access whoami via https.

However, I have two problems:

1. failed to decode configuration from flags: field not found, node: asDefault

This error prevents me from starting the container. This starts when I comment out this command line.

--entrypoints.websecure.asDefault=true

This is strange, because the documentation seems consistent with your instructions: Traefik EntryPoints Documentation - Traefik

2. Unable to append certificate to store: unable to generate TLS certificate: tls: failed to find any PEM data in certificate input

This error, which I didn't have before, worries me. This is a tls certificate that comes from my synology NAS. I extracted 2 PEM files there.

Here are my modified files. Thank you for your valuable help.

# Docker-compose

version: "3.3"

services:
  traefik:
    image: traefik:v2.11
    container_name: traefik
    restart: unless-stopped
    networks:
      - proxy
    security_opt:
      - no-new-privileges:true
    ports:
      - published: 4888 # web
        target: 80
        protocol: tcp
        mode: host
      - published: 4883 # websecure
        target: 443
        protocol: tcp
        mode: host
      - published: 8555 # interface
        target: 8080
        protocol: tcp
        mode: host
    volumes:
      - /volume1/docker/traefik/dynamic:/etc/traefik/dynamic
      - /volume1/docker/traefik/certificats:/etc/traefik/certs:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    command:
      # GLOBAL
      - --global.checknewversion=true
      - --global.sendAnonymousUsage=false
      # LOGS
      - --log.level=INFO #DEBUG
      - --accesslog=true
      # ENTRYPOINT
      - --entrypoints.web.address=:80
      - --entrypoints.web.http.redirections.entrypoint.to=websecure
      - --entryPoints.web.http.redirections.entrypoint.scheme=https
      - --entrypoints.websecure.address=:443
      #- --entrypoints.websecure.asDefault=true
      - --entrypoints.websecure.http.tls.domains.main=abc.example.com
      - --entrypoints.websecure.http.tls.domains.sans=*.abc.example.com
      # DASHBOARD
      - --api.dashboard=true
      - --api.insecure=true
      - --api.debug=true  
      # DOCKER PROVIDERS
      - --providers.docker=true
      - --providers.docker.network=proxy
      - --providers.docker.exposedbydefault=false
      # FILE PROVIDERS
      - --providers.file=true
      - --providers.file.directory=/etc/traefik/dynamic
      - --providers.file.watch=true
    labels:
      - traefik.enable=true
      - traefik.http.routers.mydashboard.rule=Host(`traefik.abc.example.com`)
      - traefik.http.routers.mydashboard.service=api@internal

  whoami:
    image: traefik/whoami
    container_name: traefik-whoami
    networks:
      - proxy
    ports:
      - published: 8666 # web
        target: 80
        protocol: tcp
        mode: host
    labels:
      - traefik.enable=true
      - traefik.http.routers.mywhoami.rule=Host(`whoami.abc.example.com`) || Host(`www.whoami.abc.example.com`)
      - traefik.http.services.mywhoami.loadbalancer.server.port=80
      - traefik.http.middlewares.mywwwredirect.redirectregex.regex=^https://www\.(.*)
      - traefik.http.middlewares.mywwwredirect.redirectregex.replacement=https://$${1}
      - traefik.http.routers.mywhoami.middlewares=mywwwredirect

networks:
  proxy:
    name: proxy

bluepuma77 · February 29, 2024, 8:22pm

The readme of the repository clearly states that asDefault is a Traefik v3 parameter, remove it for v2.

You only need tls.domains.main/sans if you want to create wildcard certs with Traefik LetsEncrypt. Traefik reads the domains from the existing TLS cert files and matches automatically.

You should not publish ports on any service besides Traefik, that would circumvent any potential Traefik middlewares for security purposes. Traefik connects to the target services inside the Docker network, where ports are open anyway.

Not sure why your TLS cert files don't work. Check inside Traefik container if files have content and if .pem has the usual 3 parts.

Alternatively you should be able to create your own certs (but no wildcard) when you use ports 80 or 443 with Traefik LetsEncrypt and httpChallenge or tlsChallenge. Traefik then uses the domain names from Host().

GED8006 · February 29, 2024, 11:29pm

Thank you for these tips.

Everything seems to be working correctly and I understand each intervention better.

For certificates, it was a syntactic problem in dynamic configuration.

Here is the final result

# Docker-compose

version: "3.3"

services:
  traefik:
    image: traefik:v2.11
    container_name: traefik
    restart: unless-stopped
    networks:
      - proxy
    security_opt:
      - no-new-privileges:true
    ports:
      - published: 4888 # web
        target: 80
        protocol: tcp
        mode: host
      - published: 4333 # websecure
        target: 443
        protocol: tcp
        mode: host

    volumes:
      - /volume1/docker/traefik/dynamic:/etc/traefik/dynamic
      - /volume1/docker/traefik/certificats:/etc/traefik/certs:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
    command:
      # GLOBAL
      - --global.checknewversion=true
      - --global.sendAnonymousUsage=false
      # LOGS
      - --log.level=INFO #DEBUG
      - --accesslog=true
      # ENTRYPOINT
      - --entrypoints.web.address=:80
      - --entrypoints.web.http.redirections.entrypoint.to=websecure
      - --entryPoints.web.http.redirections.entrypoint.scheme=https
      - --entrypoints.websecure.address=:443
      - --entrypoints.websecure.http.tls=true
      # DASHBOARD
      - --api.dashboard=true
      - --api.insecure=true
      - --api.debug=true  
      # DOCKER PROVIDERS
      - --providers.docker=true
      - --providers.docker.network=proxy
      - --providers.docker.exposedbydefault=false
      # FILE PROVIDERS
      - --providers.file=true
      - --providers.file.directory=/etc/traefik/dynamic
      - --providers.file.watch=true
    labels:
      - traefik.enable=true
      - traefik.http.routers.mydashboard.rule=Host(`traefik.abc.example.com`)
      - traefik.http.routers.mydashboard.service=api@internal

  whoami:
    image: traefik/whoami
    container_name: traefik-whoami
    networks:
      - proxy
    labels:
      - traefik.enable=true
      - traefik.http.routers.mywhoami.rule=Host(`whoami.abc.example.com`) || Host(`www.whoami.abc.example.com`)
      - traefik.http.services.mywhoami.loadbalancer.server.port=80
      - traefik.http.middlewares.mywwwredirect.redirectregex.regex=^https://www\.(.*)
      - traefik.http.middlewares.mywwwredirect.redirectregex.replacement=https://$${1}
      - traefik.http.routers.mywhoami.middlewares=mywwwredirect

networks:
  proxy:
    name: proxy

# Dynamic config

tls:
  certificates:
    - certFile: /etc/traefik/certs/cert.pem
      keyFile: /etc/traefik/certs/privkey.pem
      stores:
        - default

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How to call whoami in https? I get a 404 error

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