Factorio Swarm - High Availability Reducency

For simple Factorio Server using Docker.

The first step will be to setup a docker swarm. Afterward, some kind of file share should be created, in this case, a Samba server was created on a separate NAS computer. This is important since it will contain all the server data, since if a node goes down, that is running Factorio, it will not have game data any.

The way in this node swarm is setup is that it uses only a single server instance running at any point, and uses high availability as its redundancy if any of the nodes where to die or for whatever reason stop working.

version: "3.10"

services:
  factorio:
    image: factoriotools/factorio:1.1.104
    volumes:
      - factorio_data:/factorio
    ports:
      - 34197:34197/udp
      - 27015:27015/tcp
    deploy:
      mode: replicated
      replicas: 1
      resources:
        limits:
          memory: 1.0G
      placement:
        max_replicas_per_node: 1
      restart_policy:
        condition: on-failure

volumes:
  factorio_data:
    driver: local
    driver_opts:
      type: cifs 
      o: username=yyyyyy,password=xxxxxx,uid=1000,gid=1000,noperm,vers=3.0,rw
      device: //serverhost/ServicesData/factorio

Start Docker Stack

Once all the files and dependencies are created. It is as simple as invoking the following. It will create a docker service from the compose file.

docker stack deploy -c factorio-compose.yml factorio

Secret for Samba – Optional

This step is optional, but it allows for storing the Samba credentials as a file that is not accessible in the docker-compose file.

printf "username=user password=1234 | docker secret create SambaMount -

 docker secret create SambaMount smbcredentials.txt

Docker configuration, using Samba Share, using the cifs client.

version: "3.9"

services:
  factorio:
    image: factoriotools/factorio:1.1.104
    volumes:
      - factorio_data:/factorio
    ports:
      - 34197:34197/udp
      - 27015:27015/tcp
    deploy:
      mode: replicated
      replicas: 1
      resources:
        limits:
          memory: 1.5G
      placement:
        max_replicas_per_node: 1
      restart_policy:
        condition: on-failure
    secrets:
      - source: SambaMount
        target: /.smbcredentials
        uid: '1000'
        gid: '1000'
        mode: 0666

      
volumes:
  factorio_data:
    driver: local
    driver_opts:
      type: cifs 
      o: credentials=/.smbcredentials,uid=1000,gid=1000,vers=3.0,noperm,rw
      device: //IP/Share/factorio

secrets:
  SambaMount:
    external: true