Docker Traefik Headers not set

Traefik Traefik v2
,
1

I can't seem to get Traefik to set headers:

I have the following labels in my docker-compose.yml file:

services:
  nextcloud:
    image: 'nextcloud:latest'
    container_name: nextcloud
    build: .
    networks:
      - proxy
      - nextcloud

    volumes:
      - nextcloud:/var/www/html

    environment:
      - TZ=$TIMEZONE
      - MYSQL_HOST=$MYSQL_HOST
      - MYSQL_DATABASE=$MYSQL_DATABASE
      - MYSQL_USER=$MYSQL_USER
      - MYSQL_PASSWORD=$MYSQL_PASSWORD
      - REDIS_HOST=nextcloud_redis
      - REDIS_HOST_PASSWORD=$REDIS_PASSWORD
      - NEXTCLOUD_ADMIN_USER=$NEXTCLOUD_ADMIN_USER
      - NEXTCLOUD_ADMIN_PASSWORD=$NEXTCLOUD_ADMIN_PASSWORD
      - SMTP_HOST=$SMTP_HOST
      - SMTP_SECURE=$SMTP_SECURE
      - SMTP_PORT=$SMTP_PORT
      - SMTP_AUTHTYPE=$SMTP_AUTHTYPE
      - SMTP_NAME=$SMTP_NAME
      - SMTP_PASSWORD=$SMTP_PASSWORD
      - MAIL_FROM_ADDRESS=$MAIL_FROM_ADDRESS
      - MAIL_DOMAIN=$MAIL_DOMAIN
      - APACHE_DISABLE_REWRITE_IP=1
      - TRUSTED_PROXIES=192.168.80.0/20

    depends_on:
      - nextcloud_redis
    restart: unless-stopped

labels:
  - "traefik.enable=true"
  - "traefik.http.routers.cloud.entrypoints=http"
  - "traefik.http.routers.cloud.rule=Host(`$HOST.$DOMAIN`)"
  - "traefik.http.middlewares.cloud-https-redirect.redirectscheme.scheme=https"
  - "traefik.http.routers.cloud.middlewares=cloud-https-redirect"
  - "traefik.http.routers.cloud-secure.entrypoints=https"
  - "traefik.http.routers.cloud-secure.rule=Host(`$HOST.$DOMAIN`)"
  - "traefik.http.routers.cloud-secure.tls=true"
  - "traefik.http.routers.cloud-secure.tls.certresolver=le"
  - "traefik.http.routers.cloud-secure.service=cloud"
  - "traefik.http.services.cloud.loadbalancer.server.port=80"
  - "traefik.docker.network=proxy"
  - "traefik.http.middlewares.cloud.headers.customFrameOptionsValue=SAMEORIGIN"
  - "traefik.http.middlewares.cloud.headers.framedeny=true"
  - "traefik.http.middlewares.cloud.headers.sslredirect=true"
  - "traefik.http.middlewares.cloud.headers.STSIncludeSubdomains=true"
  - "traefik.http.middlewares.cloud.headers.STSPreload=true"
  - "traefik.http.middlewares.cloud.headers.STSSeconds=315360000"
  - "traefik.http.middlewares.cloud.headers.forceSTSHeader=true"
  - "traefik.http.middlewares.cloud.headers.sslProxyHeaders.X-Forwarded-Proto=https"
  - "traefik.http.middlewares.cloud-dav.replacepathregex.regex=^/.well-known/ca(l|rd)dav"
  - "traefik.http.middlewares.cloud-dav.replacepathregex.replacement=/remote.php/dav/"

I have also verified under Traefik HTTP Middlewares that the cloud@docker is showing the following:

STS SECONDS 315360000
STS INCLUDE SUBDOMAINS True
STS PRELOAD True
FORCE STS HEADER True
FRAME DENY True

Yet I'm not seeing those response headers. I'm sure I'm doing something stupid but I can't figure out what.

Thanks in advance

2

Hi @deeztek

I only see one router with a middlewares statement.
So the middleware is defined but not referenced.

3

I guess I'm confused. For example, the middleware below should be like this?

- "traefik.http.middlewares.cloud-https-redirect.headers.STSSeconds=315360000"

4

So you have defined the middleware correctly, you see it in the traefik dashboard.

The problem is no routers are using it. You likely want to add this label:

- "traefik.http.routers.cloud-secure.middlewares=cloud"

This line is superfluous as this is the container the route applies to.

  - "traefik.http.routers.cloud-secure.service=cloud"
5

Adding the below label as you suggested:

- "traefik.http.routers.cloud-secure.middlewares=cloud"

Breaks the container with the following error:

cannot create middleware: multi-types middleware not supported, consider declaring two different pieces of middleware instead

I'm guessing because the following label already exists:

- "traefik.http.routers.cloud.middlewares=cloud-https-redirect"

6

That is on a different router (cloud) it doesn't look like a conflict.

This sounds like there is an additional middleware type being added on a middleware definition. There might be additional context with that error that shows which one.

Were the any other changes made? What does the full labels section look like now ?

1 Like
7

If you have two labels starting with

  • traefik.http.middlewares.name.addprefix
  • traefik.http.middlewares.name.basicauth

where addprefix and basicauth are some arbitrary middlewares, and the name is the same middleware (instance) name you will get the error you are seeing. make sure that you do not have anything like that (even across different containers)