Does InsecureSkipVerify work differently in Traefik:2.x?

Traefik Traefik v2
1

Hello,

I'm trying to migrate my setup from Traefik 1.7 to 2.1 and I came across an issue regarding https backends.

In the following example I have 1 http backend (Traefik dashboard) and two https backends (Unifi-Controller and Heimdall). Traefik applies a wildcard certificate to all of there services and with the following configuration this all works fine.

stack.yaml

version: '3.7'

services:
  traefik:
    image: traefik:1.7
    ports:
      - "80:80"
      - "443:443"
    networks:
      - web
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - config:/etc/traefik/
    configs:
      - source: config
        target: /etc/traefik/traefik.toml
    secrets:
      - source: wildcard.{{ host_domain }}.crt
        target: /run/secrets/wildcard.{{ host_domain }}.crt
      - source: wildcard.{{ host_domain }}.key
        target: /run/secrets/wildcard.{{ host_domain }}.key
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.port=8080"
        - "traefik.frontend.rule=Host:traefik.{{ host_domain }}"
      placement:
        constraints: 
          - node.role == manager

  unifi:
    image: linuxserver/unifi-controller:LTS
    ports:
      - "2004:8080"
      - "6789:6789"
      - "3478:3478/udp"
      - "10001:10001/udp"
    networks:
      - web
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.port=8443"
        - "traefik.protocol=https"
        - "traefik.frontend.rule=Host:unifi.{{ host_domain }}"

  heimdall:
    image: linuxserver/heimdall:latest
    networks:
      - web
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.port=443"
        - "traefik.protocol=https"
        - "traefik.frontend.rule=Host:heimdall.{{ host_domain }}"

networks:
  web:
    external: true

volumes:
  config:

configs:
  config:
    file: ./traefik.toml

secrets:
  wildcard.{{ host_domain }}.crt:
    external: true
  wildcard.{{ host_domain }}.key:
    external: true

traefik.toml

debug = true
logLevel = "DEBUG"

defaultEntryPoints = ["http", "https"]
InsecureSkipVerify = true

[entryPoints]
  [entryPoints.http]
  address = ":80"
    [entryPoints.http.redirect]
      entryPoint = "https"
  [entryPoints.https]
  address = ":443"
    [entryPoints.https.tls]
      [entryPoints.https.tls.defaultCertificate]
      certFile = "/run/secrets/wildcard.{{ host_domain }}.crt"
      keyFile = "/run/secrets/wildcard.{{ host_domain }}.key"

[api]

[docker]
domain = "{{ host_domain }}"
swarmMode = true
swarmModeRefreshSeconds = 30
network = "web"
exposedByDefault = false

I've tried to replicate this setup with Traefik 2.1 and succeeded for the most part except for one service.
Heimdall in Chrome had multiple errors like this:

Mixed Content: The page at 'https://heimdall.server.lan/' was loaded over HTTPS, but requested an insecure favicon 'http://heimdall.server.lan/favicon-96x96.png'. This request has been blocked; the content must be served over HTTPS.

This while Unifi-Controller, also with a backend using https, is still working perfectly.

This is with the following configuration:

config_static.yaml

log:
  level: DEBUG

api:
  insecure: true
  dashboard: true
  debug: true

entryPoints:
  http:
    address: ":80"
  https:
    address: ":443"

serversTransport:
  insecureSkipVerify: true

providers:
  file:
    directory: /etc/traefik
    filename: dynamic.yaml
  docker:
    exposedByDefault: false
    network: web
    swarmMode: true
    swarmModeRefreshSeconds: "30s"

config_dynamic.yaml

http:
  routers:
    http-catchall:
      rule: HostRegexp(`{host:.+}`)
      entryPoints: [http,https]
      middlewares: [redirect-to-https]
      service: https-redirect
      priority: 1
      tls: {}
  services:
    https-redirect:
      loadBalancer:
        servers:
          - url: http://localhost/
  middlewares:
    redirect-to-https:
      redirectScheme:
        scheme: https
        permanent: true

tls:
  stores:
    default:
      defaultCertificate:
        certFile: /run/secrets/wildcard.{{ host_domain }}.crt
        keyFile: /run/secrets/wildcard.{{ host_domain }}.key
  options:
    default:
      minVersion: VersionTLS13

stack.yaml

version: '3.7'

services:
  traefik:
    image: traefik:2.1
    ports:
      - "80:80"
      - "443:443"      
    networks:
      - web
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - config:/etc/traefik/
    configs:
      - source: static
        target: /etc/traefik/traefik.yaml
      - source: dynamic
        target: /etc/traefik/dynamic.yaml
    secrets:
      - source: wildcard.{{ host_domain }}.crt
        target: /run/secrets/wildcard.{{ host_domain }}.crt
      - source: wildcard.{{ host_domain }}.key
        target: /run/secrets/wildcard.{{ host_domain }}.key
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.http.services.traefik.loadbalancer.server.port=8080"
        - "traefik.http.routers.traefik.rule=Host(`traefik.{{ host_domain }}`)"
        - "traefik.http.routers.traefik.service=api@internal"
      placement:
        constraints: 
          - node.role == manager

  unifi:
    image: linuxserver/unifi-controller:LTS
    ports:
      - "2004:8080"
      - "6789:6789"
      - "3478:3478/udp"
      - "10001:10001/udp"
    networks:
      - web
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.http.services.unifi.loadbalancer.server.port=8443"
        - "traefik.http.services.unifi.loadbalancer.server.scheme=https"
        - "traefik.http.routers.unifi.rule=Host(`unifi.{{ host_domain }}`)"

  heimdall:
    image: linuxserver/heimdall:latest
    networks:
      - web
    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.http.services.heimdall.loadbalancer.server.port=443"
        - "traefik.http.services.heimdall.loadbalancer.server.scheme=https"
        - "traefik.http.routers.heimdall.rule=Host(`heimdall.{{ host_domain }}`)"

networks:
  web:
    external: true


volumes:
  config:


configs:
  static:
    file: ./config_static.yaml
  dynamic:
    file: ./config_dynamic.yaml


secrets:
  wildcard.{{ host_domain }}.crt:
    external: true
  wildcard.{{ host_domain }}.key:
    external: true

Does anyone know why I'm having this problem?

2

Bump

As far as I can see I have a reasonably standard https redirect and wildcard certificate TLS setup so I would expect someone else to have this problem.

Just a hint or a suggestion on where the problem lies would be very much appreciated! :slight_smile:

1 Like
3

Hello,

you have to enable the TLS on all routers (except for the redirection's router):

By example:

    deploy:
      labels:
        - "traefik.enable=true"
        - "traefik.http.routers.heimdall.rule=Host(`heimdall.{{ host_domain }}`)"
        - "traefik.http.routers.heimdall.tls=true"
        - "traefik.http.services.heimdall.loadbalancer.server.port=443"
        - "traefik.http.services.heimdall.loadbalancer.server.scheme=https"
1 Like
4

Thank you, this fixed it!