Dedicated server guide

Longvinter

Manage longvinterserver with AlphaGSM. Choose a runtime supported by the recorded module capabilities.

Recorded lifecycle pass · Support evidence: 2026-10-16.

Build setup commands

Runtime familysteamcmd-linux

Declared runtimes: Docker or a Linux host process.

Network bindings

7777/UDP. Named port values remain unknown; review the game guide and configuration for additional requirements.

Mods and plugins

No mod support is declared in this snapshot; review the game guide before adding mods.

Backup hook

A module-specific backup hook is declared. Review the game guide for its scope, restore procedure and shutdown requirements.

Choose a supported runtime

Linux and Docker quickstart

Review the game guide for installation, account, licensing and runtime prerequisites before setup.

Docker

Complete interactive setup and review game-specific configuration before starting the server. Review the game guide for installation, account, licensing and runtime prerequisites before setup.

Start the Docker manager ./alphagsm-docker start
Create the game instance ./alphagsm-docker my-longvinterserver create longvinterserver
Complete interactive setup ./alphagsm-docker my-longvinterserver setup
Start the game server ./alphagsm-docker my-longvinterserver start
Check the instance status ./alphagsm-docker my-longvinterserver status

./alphagsm-docker start
./alphagsm-docker my-longvinterserver create longvinterserver
./alphagsm-docker my-longvinterserver setup
./alphagsm-docker my-longvinterserver start
./alphagsm-docker my-longvinterserver status

Host process

Complete interactive setup and review game-specific configuration before starting the server. Review the game guide for installation, account, licensing and runtime prerequisites before setup.

Create the game instance ./alphagsm my-longvinterserver create longvinterserver
Complete interactive setup ./alphagsm my-longvinterserver setup
Check the host prerequisites ./alphagsm my-longvinterserver doctor
Start the game server ./alphagsm my-longvinterserver start
Check the instance status ./alphagsm my-longvinterserver status

./alphagsm my-longvinterserver create longvinterserver
./alphagsm my-longvinterserver setup
./alphagsm my-longvinterserver doctor
./alphagsm my-longvinterserver start
./alphagsm my-longvinterserver status

This guide covers the longvinterserver module in AlphaGSM.

longvinterserver is currently PASSED on the documented Ubuntu 24.04 Linux baseline. The current GitHub integration lane still exercises both process and Docker runtime selection, and the validated Linux lifecycle stays aligned across both backends while local runs remain process-backed by default unless you opt into the Docker backend.

Requirements

Docker for the validated steamcmd-linux runtime path
SteamCMD runtime libraries (lib32gcc-s1, lib32stdc++6)
Python packages from requirements.txt

Quick Start

Create the server:

alphagsm mylongvint create longvinterserver

Run setup:

alphagsm mylongvint setup

Start it:

alphagsm mylongvint start

Check it:

alphagsm mylongvint status

Stop it:

alphagsm mylongvint stop

Setup Details

Setup configures:

the game port (default 7777)
the install directory
Longvinter/Saved/Config/LinuxServer/Game.ini
SteamCMD downloads the server files

Useful Commands

alphagsm mylongvint update
alphagsm mylongvint backup

Notes

Module name: longvinterserver
Default port: 7777
Current CI status: passed on 2026-05-29. Fresh smoke and integration now pass on the Docker-backed steamcmd-linux runtime path.
query, info, and info --json use generic UDP reachability on the main game port, not a separate A2S queryport.

Server variables

After create longvinterserver, inspect or change these with set:

alphagsm myserver set --list
alphagsm myserver set KEY --describe
alphagsm myserver set KEY VALUE

Key	Aliases	Type	What it does
`dir`	—	string	Install directory for the server.
`exe_name`	—	string	Server executable filename.
`maxplayers`	users	integer	Maximum allowed players.
`port`	gameport	integer	Primary gameplay port.
`servername`	hostname, name	string	Configured public server name.

Developer Notes

Run File

AlphaGSM executable: LongvinterServer.sh
Engine: Custom (SteamCMD)
SteamCMD App ID: 1639880
Validated runtime: Docker-backed steamcmd-linux
Validated launch path: ./LongvinterServer.sh -Port=<port>
Docker note: the Linux dedicated binary refuses to run as root, so the container path now drops to the mounted server-directory owner before launch.

Server Configuration

Config file: Longvinter/Saved/Config/LinuxServer/Game.ini
Max players: 32
Managed keys: servername, maxplayers
Template: See server-templates/longvinterserver/ if available

Maps and Mods

Map directory: Check game documentation
Mod directory: Check game documentation
Workshop support: No

Configuration templates

Reference files from this source revision. Review paths, passwords and game-specific settings before use.

Share your server

Sector Alpha server directory

When your server is ready, you can publish its connection details and community information on Sector Alpha. Review your listing and keep the information current.

Find a community

Browse the directory for game servers and their published connection details.

Browse server directory

Publish your server

Prepare a name, address and description for your listing.

Publish a server

Manual server sharing instructions

Frequently asked questions

What support evidence is recorded for Longvinter?

Recorded lifecycle pass. Review the game guide for installation, account, licensing and runtime prerequisites before setup.

Which runtimes can run Longvinter?

Declared runtimes: Docker or a Linux host process.

Which ports does Longvinter use?

7777/UDP. Named port values remain unknown; review the game guide and configuration for additional requirements.

Can I add mods to Longvinter?

No mod support is declared in this snapshot; review the game guide before adding mods.

How should I back up Longvinter?

A module-specific backup hook is declared. Review the game guide for its scope, restore procedure and shutdown requirements.

Source and support evidence

This guide mirrors AlphaGSM’s upstream documentation at 32cef5ba9e03053c8e461fffa0ba133b160b528d. Commands and prerequisites can change. Check current support notes before installation.

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