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submitted 2 years ago* (last edited 2 years ago) by Jattatak@beehaw.org to c/lemmy_support@lemmy.ml

Hello! I have been struggling through a few tutorials on getting a lemmy instance to work correctly when setup with Docker. I have it mostly done, but there are various issues each time that I do not have the knowledge to properly correct. I am familiar with Docker, and already have an Oracle VPS set up on ARM64 Ubuntu. I already have portainer and an NGINX proxy set up and working okay. I have an existing lemmy instance "running" but not quite working. My best guess here would be to have someone assist with setting up the docker-compose to work with current updates/settings, as well as the config.hjson.

TIA, and I cant wait to have my own entry into the fediverse working right!

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[-] Jattatak@beehaw.org 0 points 2 years ago

Working Setup files, for my ARM64 Ubuntu host server. The postgres, lemmy, lemmy-ui, and pictrs containers all are on the lemmyinternal network only. The nginx:1-alpine container is in both networks. docker-compose.yml

spoiler


version: "3.3"
# JatNote = Note from Jattatak for working YML at this time (Jun8,2023)
networks:
  # communication to web and clients
  lemmyexternalproxy:
  # communication between lemmy services
  lemmyinternal:
    driver: bridge
    #JatNote: The Internal mode for this network is in the official doc, but is what broke my setup
    # I left it out to fix it. I advise the same.
#    internal: true

services:
  proxy:
    image: nginx:1-alpine
    networks:
      - lemmyinternal
      - lemmyexternalproxy
    ports:
      # only ports facing any connection from outside
      # JatNote: Ports mapped to nonsense to prevent colision with NGINX Proxy Manager
      - 680:80
      - 6443:443
    volumes:
      - ./nginx.conf:/etc/nginx/nginx.conf:ro
      # setup your certbot and letsencrypt config 
      - ./certbot:/var/www/certbot
      - ./letsencrypt:/etc/letsencrypt/live
    restart: always
    depends_on:
      - pictrs
      - lemmy-ui

  lemmy:
  #JatNote: I am running on an ARM Ubuntu Virtual Server. Therefore, this is my image. I suggest using matching lemmy/lemmy-ui versions.
    image: dessalines/lemmy:0.17.3-linux-arm64
    hostname: lemmy
    networks:
      - lemmyinternal
    restart: always
    environment:
      - RUST_LOG="warn,lemmy_server=info,lemmy_api=info,lemmy_api_common=info,lemmy_api_crud=info,lemmy_apub=info,lemmy_db_schema=info,lemmy_db_views=info,lemmy_db_views_actor=info,lemmy_db_views_moderator=info,lemmy_routes=info,lemmy_utils=info,lemmy_websocket=info"
    volumes:
      - ./lemmy.hjson:/config/config.hjson
    depends_on:
      - postgres
      - pictrs

  lemmy-ui:
  #JatNote: Again, ARM based image
    image: dessalines/lemmy-ui:0.17.3-linux-arm64
    hostname: lemmy-ui
    networks:
      - lemmyinternal
    environment:
      # this needs to match the hostname defined in the lemmy service
      - LEMMY_UI_LEMMY_INTERNAL_HOST=lemmy:8536
      # set the outside hostname here
      - LEMMY_UI_LEMMY_EXTERNAL_HOST=lemmy.bulwarkob.com:1236
      - LEMMY_HTTPS=true
    depends_on:
      - lemmy
    restart: always

  pictrs:
    image: asonix/pictrs
    # this needs to match the pictrs url in lemmy.hjson
    hostname: pictrs
    networks:
      - lemmyinternal
    environment:
      - PICTRS__API_KEY=API_KEY
    user: 991:991
    volumes:
      - ./volumes/pictrs:/mnt
    restart: always

  postgres:
    image: postgres:15-alpine
    # this needs to match the database host in lemmy.hson
    hostname: postgres
    networks:
      - lemmyinternal
    environment:
      - POSTGRES_USER=AUser
      - POSTGRES_PASSWORD=APassword
      - POSTGRES_DB=lemmy
    volumes:
      - ./volumes/postgres:/var/lib/postgresql/data
    restart: always


lemmy.hjson:

spoiler

{
  # for more info about the config, check out the documentation
  # https://join-lemmy.org/docs/en/administration/configuration.html
  # only few config options are covered in this example config

  setup: {
    # username for the admin user
    admin_username: "AUser"
    # password for the admin user
    admin_password: "APassword"
    # name of the site (can be changed later)
    site_name: "Bulwark of Boredom"
  }

  opentelemetry_url: "http://otel:4317"

  # the domain name of your instance (eg "lemmy.ml")
  hostname: "lemmy.bulwarkob.com"
  # address where lemmy should listen for incoming requests
  bind: "0.0.0.0"
  # port where lemmy should listen for incoming requests
  port: 8536
  # Whether the site is available over TLS. Needs to be true for federation to work.
  # JatNote: I was advised that this is not necessary. It does work without it.
#  tls_enabled: true

  # pictrs host
  pictrs: {
    url: "http://pictrs:8080/"
  # api_key: "API_KEY"
  }

  # settings related to the postgresql database
  database: {
    # name of the postgres database for lemmy
    database: "lemmy"
    # username to connect to postgres
    user: "aUser"
    # password to connect to postgres
    password: "aPassword"
    # host where postgres is running
    host: "postgres"
    # port where postgres can be accessed
    port: 5432
    # maximum number of active sql connections
    pool_size: 5
  }
}

The following nginx.conf is for the internal proxy, which is included in the docker-compose.yml This is entirely separate from Nginx-Proxy-Manager (NPM)

nginx.conf:

spoiler

worker_processes 1;
events {
    worker_connections 1024;
}
http {
    upstream lemmy {
        # this needs to map to the lemmy (server) docker service hostname
        server "lemmy:8536";
    }
    upstream lemmy-ui {
        # this needs to map to the lemmy-ui docker service hostname
        server "lemmy-ui:1234";
    }

    server {
        # this is the port inside docker, not the public one yet
        listen 80;
        # change if needed, this is facing the public web
        server_name localhost;
        server_tokens off;

        gzip on;
        gzip_types text/css application/javascript image/svg+xml;
        gzip_vary on;

        # Upload limit, relevant for pictrs
        client_max_body_size 20M;

        add_header X-Frame-Options SAMEORIGIN;
        add_header X-Content-Type-Options nosniff;
        add_header X-XSS-Protection "1; mode=block";

        # frontend general requests
        location / {
            # distinguish between ui requests and backend
            # don't change lemmy-ui or lemmy here, they refer to the upstream definitions on top
            set $proxpass "http://lemmy-ui";

            if ($http_accept = "application/activity+json") {
              set $proxpass "http://lemmy";
            }
            if ($http_accept = "application/ld+json; profile=\"https://www.w3.org/ns/activitystreams\"") {
              set $proxpass "http://lemmy";
            }
            if ($request_method = POST) {
              set $proxpass "http://lemmy";
            }
            proxy_pass $proxpass;

            rewrite ^(.+)/+$ $1 permanent;
            # Send actual client IP upstream
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }

        # backend
        location ~ ^/(api|pictrs|feeds|nodeinfo|.well-known) {
            proxy_pass "http://lemmy";
            # proxy common stuff
            proxy_http_version 1.1;
            proxy_set_header Upgrade $http_upgrade;
            proxy_set_header Connection "upgrade";

            # Send actual client IP upstream
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header Host $host;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        }
    }
}


The nginx-proxy-manager container only needs to be in the same container network as the internal nginx:1-alpine container from the stack.

You need to create a proxy host for http port 80 to the IP address of the internal nginx:1-alpine container on the lemmyexternalproxy network in docker. Include the websockets support option.

https://lemmy.bulwarkob.com/pictrs/image/55870601-fb24-4346-8a42-bb14bb90d9e8.png

Then, you can use the SSL tab to do your cert and such. NPM is free to work on other networks with other containers as well, as far as I know.

[-] bagfatnick@sh.itjust.works 0 points 2 years ago

hey @Jattatak, you seem to be the only other person I can find who is facing similar troubles to myself when trying to set up a lemmy instance. I've redone my docker-compose, nginx.conf, and lemmy.hjson to be exactly the same as yours (with some changes in the password / domain name). I'm also running an nginx proxy manager container.

However, it seems I'm still having the same problem of being able to see post content but not comments in other instances. I have the added problem of when trying to post a comment on my instance, the form freezes until I refresh the page. The comment does actually get posted.

I've also made sure the 'lemmyinternal' network is not isolated. I wonder did you manage to do anything to trouble shoot this issue? are there any ports I need to open on my firewall beyond 80, 443?

this post was submitted on 07 Jun 2023
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