this post was submitted on 19 Feb 2024
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Lemmy Support

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Support / questions about Lemmy.

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I'm trying to set up my own Lemmy server with Docker. I think I have everything set up, but I'm getting an error Cannot autolaunch D-Bus without X11 $DISPLAY. This error kind of makes sense, because I'm SSHing into my server and have not forwarded D-Bus connections, so $DISPLAY is undefined. But why does a Lemmy server need a display in the first place? Is this a bug and a display isn't actually needed? If I set $DISPLAY to whatever, will it still run okay?

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[–] [email protected] 4 points 9 months ago* (last edited 9 months ago) (1 children)

I'm starting with sudo docker compose up -d and my docker-compose.yml is:

version: "3.7"

x-logging: &default-logging
  driver: "json-file"
  options:
    max-size: "50m"
    max-file: "4"

services:
  proxy:
    container_name: proxy
    image: docker.io/library/nginx
    ports:
      # actual and only port facing any connection from outside
      # Note, change the left number if port 1236 is already in use on your system
      # You could use port 80 if you won't use a reverse proxy
      - "8536:8536"
    volumes:
      - ./nginx_internal.conf:/etc/nginx/nginx.conf:ro,Z
      - ./proxy_params:/etc/nginx/proxy_params:ro,Z
    restart: always
    logging: *default-logging
    depends_on:
      - pictrs
      - lemmy-ui
  lemmy-ui:
    container_name: lemmy-ui
    image: dessalines/lemmy-ui:${LEMMY_VERSION}
    environment:
      - LEMMY_UI_LEMMY_INTERNAL_HOST=lemmy:8536
      - LEMMY_UI_LEMMY_EXTERNAL_HOST=${DOMAIN}
      - LEMMY_UI_HTTPS=true
    volumes:
      - ./volumes/lemmy-ui/extra_themes:/app/extra_themes
    depends_on:
      - lemmy
    restart: always
    logging: *default-logging
  lemmy:
    container_name: lemmy
    image: dessalines/lemmy:${LEMMY_VERSION}
    hostname: lemmy
    restart: always
    logging: *default-logging
    environment:
      - RUST_LOG=warn
    volumes:
      - ./lemmy.hjson:/config/config.hjson:Z
    depends_on:
      - postgres
      - pictrs
  pictrs:
    container_name: pictrs
    image: docker.io/c:0.4.3
    # This needs to match the pictrs url in lemmy.hjson
    hostname: pictrs
    environment:
      - PICTRS__MEDIA__EXTERNAL_VALIDATION=http://pictrs-safety:14051/api/v1/scan/IPADDR
      - PICTRS__MEDIA__VIDEO_CODEC=vp9
      - PICTRS__MEDIA__GIF__MAX_WIDTH=256
      - PICTRS__MEDIA__GIF__MAX_HEIGHT=256
      - PICTRS__MEDIA__GIF__MAX_AREA=65536
      - PICTRS__MEDIA__GIF__MAX_FRAME_COUNT=400
      - PICTRS_OPENTELEMETRY_URL=http://otel:4137
      - RUST_LOG=debug
      - RUST_BACKTRACE=full
      - PICTRS__API_KEY=${PICTRS_API_KEY}
      - PICTRS__STORE__TYPE=${PICTRS_STORE_TYPE}
      - PICTRS__STORE__ENDPOINT=${PICTRS_STORE_ENDPOINT}
      - PICTRS__STORE__BUCKET_NAME=${PICTRS_STORE_BUCKET_NAME}
      - PICTRS__STORE__REGION=${PICTRS_STORE_REGION}
      - PICTRS__STORE__USE_PATH_STYLE=${PICTRS_STORE_USE_PATH_STYLE}
      - PICTRS__STORE__ACCESS_KEY=${PICTRS_STORE_ACCESS_KEY}
      - PICTRS__STORE__SECRET_KEY=${PICTRS_STORE_SECRET_KEY}
    volumes:
      - ./volumes/pictrs:/mnt:Z
    user: 991:991
    restart: always
    logging: *default-logging
    deploy:
      resources:
        limits:
          memory: 690m
  postgres:
    container_name: postgres
    image: docker.io/postgres:15-alpine
    hostname: postgres
    environment:
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
      - POSTGRES_DB=${POSTGRES_DB}
    volumes:
      - ./volumes/postgres:/var/lib/postgresql/data:Z
      - ./customPostgresql.conf:/etc/postgresql.conf
    restart: always
    command: postgres -c config_file=/etc/postgresql.conf
    logging: *default-logging
  pictrs-safety:
    image: ghcr.io/db0/pictrs-safety:v1.2.2
    hostname: pictrs-safety
    container_name: pictrs-safety
    environment:
    - FEDIVERSE_SAFETY_WORKER_AUTH="${PICTRS_SAFETY_WORKER_AUTH}"
    - FEDIVERSE_SAFETY_IMGDIR="/tmp/images"
    - USE_SQLITE=1
    - secret_key="${PICTRS_SECRET_KEY}"
    - SCAN_BYPASS_THRESHOLD=10
    - MISSING_WORKER_THRESHOLD=5
    ports:
      - "14051:14051"
    user: 991:991
    restart: always
    logging: *default-logging
    depends_on:
      - pictrs

I'm following this guide: https://patrickwu.space/2023/11/04/install-lemmy-simplified/. My .env file is:

LEMMY_VERSION=0.19.3
DOMAIN=lemmy.soulism.net
# postgres
POSTGRES_USER=admin
POSTGRES_PASSWORD=**redacted**
POSTGRES_DB=
# pictrs
## keys
PICTRS_API_KEY=stars
### 15 random characters
PICTRS_SAFETY_WORKER_AUTH=p70nkXCN1UEcyN3
### 80 random characters
PICTRS_SECRET_KEY=**redacted**
## storage type; by default is filesystem for object storage please set it to object_storage
PICTRS_STORE_TYPE=filesystem
PICTRS_STORE_ENDPOINT=
PICTRS_STORE_BUCKET_NAME=
PICTRS_STORE_REGION=
PICTRS_STORE_USE_PATH_STYLE=false
PICTRS_STORE_ACCESS_KEY=
PICTRS_STORE_SECRET_KEY=
[–] [email protected] 3 points 9 months ago (1 children)

The image for the pictrs service is wrong.
No idea what it should be, but it shouldnt be docker.io/c:0.4.3

[–] [email protected] 1 points 9 months ago (1 children)

Thanks. I get the same error even with pictrs image set to docker.io/asonix/pictrs:0.5.4

[–] [email protected] 2 points 9 months ago (1 children)

I mean, i dont see anything strange.
Maybe just destroy the droplet and start fresh? Or spin up another just to test with?
Are you familiar with installing docker? I always just use docker's convenience script to install it, and never had any problems.
You sure you havent accidentally installed docker desktop instead of docker engine? I dont know if docker has a desktop version for linux.

I keep meaning to figure out rootless mode or swap to podman

[–] [email protected] 1 points 9 months ago

I've never used docker before. It's a strange newfangled technology I don't understand. Back in my day you either used apt-get, or you compiled it yourself. I want to learn, and I thought installing Lemmy would be a good learning opportunity, but I'm finding myself chasing my own tail instead. My docker version is Docker version 24.0.2, build cb74dfc, and google is seeming to indicate that's docker engine. I can't see how docker desktop would be trying to run on ubuntu.