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authentik

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https://docs.goauthentik.io/docs/installation/docker-compose

https://www.youtube.com/watch?v=N5unsATNpJk

 

docker-compose.yml 

wichtig:
- bei server einen hostnamen hinzufügen
- wenn möglich port 9000 belassen
- gleiches network wie der Nginx Proxy Manager Container nutzen (damit npm über den hostname auf den authentik server zugreifen kann, siehe 500 Internal Server Error weiter unten)

---

services:
  postgresql:
    image: docker.io/library/postgres:16-alpine
    restart: unless-stopped
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -d $${POSTGRES_DB} -U $${POSTGRES_USER}"]
      start_period: 20s
      interval: 30s
      retries: 5
      timeout: 5s
    networks:
      - reverseproxy_network
    volumes:
      - database:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: ${PG_PASS}
      POSTGRES_USER: ${PG_USER:-authentik}
      POSTGRES_DB: ${PG_DB:-authentik}
    env_file:
      - stack.env
  redis:
    image: docker.io/library/redis:alpine
    command: --save 60 1 --loglevel warning
    restart: unless-stopped
    healthcheck:
      test: ["CMD-SHELL", "redis-cli ping | grep PONG"]
      start_period: 20s
      interval: 30s
      retries: 5
      timeout: 3s
    networks:
      - reverseproxy_network
    volumes:
      - redis:/data
  server:
    image: ${AUTHENTIK_IMAGE:-ghcr.io/goauthentik/server}:${AUTHENTIK_TAG:-2024.6.0}
    restart: unless-stopped
    hostname: authentik_server
    command: server
    ulimits:
      nofile:
        soft: 10240
        hard: 10240
    environment:
      AUTHENTIK_REDIS__HOST: redis
      AUTHENTIK_POSTGRESQL__HOST: postgresql
      AUTHENTIK_POSTGRESQL__USER: ${PG_USER:-authentik}
      AUTHENTIK_POSTGRESQL__NAME: ${PG_DB:-authentik}
      AUTHENTIK_POSTGRESQL__PASSWORD: ${PG_PASS}
    networks:
      - reverseproxy_network
    volumes:
      - media:/media
      - custom-templates:/templates#    
    env_file:
      - stack.env
    ports:
      - "${COMPOSE_PORT_HTTP:-9000}:9000"
      - "${COMPOSE_PORT_HTTPS:-9443}:9443"
    depends_on:
      - postgresql
      - redis
  worker:
    image: ${AUTHENTIK_IMAGE:-ghcr.io/goauthentik/server}:${AUTHENTIK_TAG:-2024.6.0}
    restart: unless-stopped
    command: worker
    ulimits:
      nofile:
        soft: 10240
        hard: 10240
    environment:
      AUTHENTIK_REDIS__HOST: redis
      AUTHENTIK_POSTGRESQL__HOST: postgresql
      AUTHENTIK_POSTGRESQL__USER: ${PG_USER:-authentik}
      AUTHENTIK_POSTGRESQL__NAME: ${PG_DB:-authentik}
      AUTHENTIK_POSTGRESQL__PASSWORD: ${PG_PASS}
    # `user: root` and the docker socket volume are optional.
    # See more for the docker socket integration here:
    # https://goauthentik.io/docs/outposts/integrations/docker
    # Removing `user: root` also prevents the worker from fixing the permissions
    # on the mounted folders, so when removing this make sure the folders have the correct UID/GID
    # (1000:1000 by default)
    user: root
    networks:
      - reverseproxy_network
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - media:/media
      - certs:/certs
      - custom-templates:/templates
    env_file:
      - stack.env
    depends_on:
      - postgresql
      - redis

volumes:
  database:
    driver: local
  redis:
    driver: local
  media:
  custom-templates:
  certs:

networks:
  reverseproxy_network:
      name: reverseproxy_network
      driver: bridge

PG_PASS

openssl rand 36 | base64

AUTHENTIK_SECRET_KEY

openssl rand 60 | base64

Portainer env via advanced mode

PG_PASS=2jvp8Jmnf8cS
AUTHENTIK_SECRET_KEY="hxHHNgxf5PALhfX0FL69v"
AUTHENTIK_ERROR_REPORTING__ENABLED=true
AUTHENTIK_EMAIL__HOST=smtp.world4you.com
AUTHENTIK_EMAIL__PORT=587
AUTHENTIK_EMAIL__USERNAME=MEINE....@MY-MAIL.DE
AUTHENTIK_EMAIL__PASSWORD=MEIN.....MAIL-PW
AUTHENTIK_EMAIL__FROM=NO-REPLY@MY-MAIL.DE
AUTHENTIK_EMAIL__USE_TLS=true
COMPOSE_PORT_HTTP=9006
COMPOSE_PORT_HTTPS=9446

image.png

Danach noch das Initial-Setup durchführen, um ein Passwort zu setzen:

http://MEIN-HOSTNAME-ODER-IP:9000/if/flow/initial-setup

oder mit meiner cfg

http://MEIN-HOSTNAME-ODER-IP:9006/if/flow/initial-setup

Zusatzinfo
die Zeilen
    ulimits:
      nofile:
        soft: 10240
        hard: 10240
in der docker-compose.yml habe ich eingefügt, weil ein Bug dazu führt, dass die CPU-Leistung des Docker Hosts auf 100% klettert und einige Stunden braucht, bis sie sich wieder erholt. Mehr Infos unter https://github.com/goauthentik/authentik/pull/7762 und
https://github.com/goauthentik/authentik/issues/7025, die Lösung stammt aus diesem Kommentar:
https://github.com/goauthentik/authentik/issues/7025#issuecomment-1868333903 

Nextcloud Integration

benötigte Nextcloud App: https://apps.nextcloud.com/apps/user_oidc

Anleitung: https://docs.goauthentik.io/integrations/services/nextcloud/ 

Zusatz:

Befehl, um nur Anmeldung über Authentik zuzulassen:

sudo -u www-data php var/www/nextcloud/occ config:app:set --value=0 user_oidc allow_multiple_user_backends

bzw wenn man diesem Artikel folgt

docker exec -it -u 33 nextcloud-app-1 /bin/bash

und dann 

./occ config:app:set --value=0 user_oidc allow_multiple_user_backends

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Wenn man sich dann trotzdem über den Direktlogin zb als Super-Admin einloggen möchte, geht das über 

http://nextcloud.MEINEDOMAIN.de/login?direct=1 

Branding (eigene Marke)

/static/dist/assets/icons/icon_left_brand.svg
/static/dist/assets/icons/icon.png

https://www.youtube.com/watch?v=YawgyM509ng

https://www.youtube.com/watch?v=3oIRY0NWPr8 

Proxy Provider

nach Anleitung von https://geekscircuit.com/set-up-authentik-sso-with-nginx-proxy-manager/ 

Wenn man eine Seite mit Authentik sichern möchte, die kein Userlogin hat (zb gethomepage/homepage dashboard)

https://www.youtube.com/watch?v=Nh1qiqCYDt4 

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1. Authentik Domain in authentik Embedded Outpost ändern

um die eigene Domain festzulegen. Ist zb wichtig im Falle von Emails und Links, die versendet werden.

Anwendungen > Outpost > authentik Embedded Outpost > bearbeiten > Erweiterte Einstellungen > Konfiguration > authentik_host auf eigene Domain umstellen:

image.png

2. Proxy Provider erstellen 

Applications > Provider > new Proxy Provider > Forward Auth (single application) > externer host eingeben

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3. Anwendung mit dem erstellten Provider erstellen

...

danach weiter wie beim 500 Internal Server Error vorgehen:

500 Internal Server Error

Lösung auf github gepostet: https://github.com/vineethmn/geekscomments/issues/1#issuecomment-2436487499 

I want to share my solution with getting rid the 500 internal server error because i did not find it anywhere online (i found out randomly):

#### TLDR:
- add NPM and Authentik to the same docker network
- use the Authentik server dockercontainer INTERNAL Port in NPM > advanced > custom config and not the one you exposed (when you chose to use for example 9006:9000 in your docker-compose.yml then redirect to 9000 anyway. I dont know why 9006 is not working)

#### LDR:

First I added the NPM and Authentik containers in the same docker network and added a hostname in my 

####

authentik docker-compose.yml

```

......
 
  server:
 
    image: ${AUTHENTIK_IMAGE:-ghcr.io/goauthentik/server}:${AUTHENTIK_TAG:-2024.6.0}
 
    hostname: authentik_server
 
    ports:
 
      - 9006:9000
 
      - 9446:9443
 
    networks:
 
      - reverseproxy_network
 
    volumes:

......
 
  postgresql:
 
    image: docker.io/library/postgres:16-alpine
 
    networks:
 
      - reverseproxy_network
 
    volumes:

......



networks:
 
  reverseproxy_network:
 
      name: reverseproxy_network
 
      driver: bridge
```

and 


#### npm docker-compose.yml
```
services:
 
  app:
 
    image: 'jc21/nginx-proxy-manager:latest'
 
    restart: always
 
    ports:
 
      - '80:80'
 
      - '81:81'
 
      - '443:443'
 
    volumes:
 
      - data:/data
 
      - letsencrypt:/etc/letsencrypt
 
    networks:
 
      - reverseproxy_network



volumes:
 
  data:
 
  letsencrypt:



networks:
 
  reverseproxy_network:
 
      name: reverseproxy_network
 
      driver: bridge
```

after that i used the NPM > Proxy Host > Advanced > Custom Nginx Configuration config by 
https://geekscircuit.com/set-up-authentik-sso-with-nginx-proxy-manager/manager 
for my homepage proxy host: 
(you only need to change proxy_pass if your authentik-server hostname does not match with mine 'hostname: authentik_server')
![image](https://github.com/user-attachments/assets/1886ed84-20eb-4e2f-9633-7b69d200b799)
```

image.png

custom nginx configuration
# Increase buffer size for large headers

# This is needed only if you get 'upstream sent too big header while reading response

# header from upstream' error when trying to access an application protected by goauthentik

proxy_buffers 8 16k;

proxy_buffer_size 32k;



location / {
 
    # Put your proxy_pass to your application here
 
    proxy_pass          $forward_scheme://$server:$port;


 

    # authentik-specific config
 
    auth_request        /outpost.goauthentik.io/auth/nginx;
 
    error_page          401 = @goauthentik_proxy_signin;
 
    auth_request_set $auth_cookie $upstream_http_set_cookie;
 
    add_header Set-Cookie $auth_cookie;


 

    # translate headers from the outposts back to the actual upstream
 
    auth_request_set $authentik_username $upstream_http_x_authentik_username;
 
    auth_request_set $authentik_groups $upstream_http_x_authentik_groups;
 
    auth_request_set $authentik_email $upstream_http_x_authentik_email;
 
    auth_request_set $authentik_name $upstream_http_x_authentik_name;
 
    auth_request_set $authentik_uid $upstream_http_x_authentik_uid;


 

    proxy_set_header X-authentik-username $authentik_username;
 
    proxy_set_header X-authentik-groups $authentik_groups;
 
    proxy_set_header X-authentik-email $authentik_email;
 
    proxy_set_header X-authentik-name $authentik_name;
 
    proxy_set_header X-authentik-uid $authentik_uid;

}



# all requests to /outpost.goauthentik.io must be accessible without authentication

location /outpost.goauthentik.io {
 
    proxy_pass          http://authentik_server:9000/outpost.goauthentik.io; # <<<< CHANGE HERE <<<<
 
    # ensure the host of this vserver matches your external URL you've configured
 
    # in authentik
 
    proxy_set_header    Host $host;
 
    proxy_set_header    X-Original-URL $scheme://$http_host$request_uri;
 
    add_header          Set-Cookie $auth_cookie;
 
    auth_request_set    $auth_cookie $upstream_http_set_cookie;


 

    # required for POST requests to work
 
    proxy_pass_request_body off;
 
    proxy_set_header Content-Length "";

}



# Special location for when the /auth endpoint returns a 401,

# redirect to the /start URL which initiates SSO

location @goauthentik_proxy_signin {
 
    internal;
 
    add_header Set-Cookie $auth_cookie;
 
    return 302 /outpost.goauthentik.io/start?rd=$request_uri;
 
    # For domain level, use the below error_page to redirect to your authentik server with the full redirect path
 
    # return 302 https://authentik.company/outpost.goauthentik.io/start?rd=$scheme://$http_host$request_uri;

}
```


i also did not have to change anything on my authentik outpost:
![image](https://github.com/user-attachments/assets/8e615939-eecd-4b9a-ab15-8ca75e313b98)

image.png

Andere mit dem gleichen Problem:

https://geekscircuit.com/set-up-authentik-sso-with-nginx-proxy-manager/
https://github.com/goauthentik/authentik/issues/10010
https://www.reddit.com/r/selfhosted/comments/vs12ug/sso_with_authentik_and_nginx_proxy_manager/?tl=de
https://www.youtube.com/watch?v=Nh1qiqCYDt4&list=PLH73rprBo7vSkDq-hAuXOoXx2es-1ExOP 

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