Authentik server and worker : Name or service not known

[ThierryIT]

Describe your question/ Hello, I am trying to install authentik on my homelab. I am following the instruction from Lempa on Youtube. When running Authentik, there is no problem with postgresql and redis but the Server and the Worker have the same error message:

INF event=PostgreSQL connection failed, retrying... ([Errno -2] Name or service not known) logger=authentik.lib.config timestamp=1711447190.004681 INF event=PostgreSQL connection failed, retrying... ([Errno -2] Name or service not known) logger=authentik.lib.config timestamp=1711447195.124615 INF event=PostgreSQL connection failed, retrying... ([Errno -2] Name or service not known) logger=authentik.lib.config timestamp=1711447200.2448711

Relevant info Docker are running on the last version of Proxmox.

Version and Deployment (please complete the following information):

• authentik version: [2024.2.2]
• Deployment: with Portainer

Ideas ?

`services:
  postgresql:
    image: docker.io/library/postgres:12-alpine
    container_name: authentik-demo-1-postgresql
    restart: unless-stopped
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -d $${POSTGRES_DB} -U $${POSTGRES_USER}"]
      start_period: 20s
      interval: 30s
      retries: 5
      timeout: 5s
    volumes:
      - database:/var/lib/postgresql/data
    environment:
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_DB: ${POSTGRES_DB}
  redis:
    image: docker.io/library/redis:alpine
    container_name: authentik-demo-1-redis
    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
    volumes:
      - redis:/data
  server:
    image: ghcr.io/goauthentik/server:2024.2.2
    container_name: authentik-demo-1-server
    restart: unless-stopped
    command: server
    environment:
      AUTHENTIK_REDIS__HOST: redis
      AUTHENTIK_POSTGRESQL__HOST: postgresql
      AUTHENTIK_POSTGRESQL__USER: ${POSTGRES_USER}
      AUTHENTIK_POSTGRESQL__NAME: ${POSTGRES_DB}
      AUTHENTIK_POSTGRESQL__PASSWORD: ${POSTGRES_PASSWORD}
      AUTHENTIK_ERROR_REPORTING__ENABLED: true
      AUTHENTIK_SECRET_KEY: ${AUTHENTIK_SECRET_KEY}

    volumes:
      - /mnt/user/appdata/docker/authentik/media:/media
      - /mnt/user/appdata/docker/authentik/custom-templates:/templates
    #labels:
     # - "traefik.enable: true"
      #- "traefik.http.routers.authentik-demo-1.rule=Host('authentik-demo-1.domain.tld')"
      #- "traefik.http.routers.authentik-demo-1.entrypoints=websecure"
      #- "traefik.http.routers.authentik-demo-1.tls=true"
      #- "traefik.http.routers.authentik-demo-1.tls.certresolver=cloudflare"
      #- "traefik.http.routers.authentik-demo-1.service=authentik-https-1-svc"
      #- "traefik.http.services.authentik-demo-1.loadBalancer.server.port=9000"
    depends_on:
      - postgresql
      - redis
    networks:
      - mynetwork
  worker:
    image: ghcr.io/goauthentik/server:2024.2.2
    container_name: authentik-demo-1-worker
    restart: unless-stopped
    command: worker
    environment:
      AUTHENTIK_REDIS__HOST: redis
      AUTHENTIK_POSTGRESQL__HOSTS: postgresql
      AUTHENTIK_POSTGRESQL__USER: ${POSTGRES_USER}
      AUTHENTIK_POSTGRESQL__NAME: ${POSTGRES_DB}
      AUTHENTIK_POSTGRESQL__PASSWORD: ${POSTGRES_PASSWORD}
      AUTHENTIK_ERROR_REPORTING__ENABLED: true
      AUTHENTIK_SECRET_KEY: ${AUTHENTIK_SECRET_KEY}
 
    user: root
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
      - /mnt/user/appdata/docker/authentik/media:/media
      - /mnt/user/appdata/docker/authentik/certs:/certs
      - /mnt/user/appdata/docker/authentik/custom-templates:/templates
    depends_on:
      - postgresql
      - redis
    networks: 
      - mynetwork
volumes:
  database:
    driver: local
  redis:
    driver: local
networks:
   mynetwork:
     external: true`

[ThierryIT]

I have done some test with different version of postgres and authentik ... Same pb. The database is created without any tables on it.

[rissson]

From the docker-compose you provided, the server and worker container are not in the same docker network as the postgresql and redis containers. This is why they can't talk to each other.