Dedicated server guide

Core Keeper

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

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

Runtime familysteamcmd-linux

Declared runtimes: Docker or a Linux host process.

Network bindings

27015/UDP, 27015/TCP. 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-ckserver create ckserver
Complete interactive setup ./alphagsm-docker my-ckserver setup
Start the game server ./alphagsm-docker my-ckserver start
Check the instance status ./alphagsm-docker my-ckserver status

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

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

This guide covers the ckserver module in AlphaGSM.

ckserver 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

screen
SteamCMD runtime libraries (lib32gcc-s1, lib32stdc++6)
Python packages from requirements.txt

Quick Start

Create the server:

alphagsm myckserver create ckserver

Run setup:

alphagsm myckserver setup

Start it:

alphagsm myckserver start

Check it:

alphagsm myckserver status

Stop it:

alphagsm myckserver stop

Setup Details

Setup configures:

the game port (default 27015)
the install directory
the visible world name (world)
the world slot index (worldindex, default 0)
SteamCMD downloads the server files

Useful Commands

alphagsm myckserver update
alphagsm myckserver backup

Notes

Module name: ckserver
Default port: 27015
Linux startup uses the bundled _launch.sh wrapper, which starts Xvfb and launches the Unity server in -batchmode
AlphaGSM uses the direct-connect game port for generic UDP query and info reachability checks
Dedicated server state is written under DedicatedServer/
The server writes connection details to GameInfo.txt

Server variables

After create ckserver, inspect or change these with set:

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

This module does not declare schema-backed keys. set --list after create is still the live source of truth.

Developer Notes

Run File

Executable: _launch.sh
Location: <install_dir>/_launch.sh
Engine: Custom (SteamCMD)
SteamCMD App ID: 1963720

Server Configuration

Config file: See game module source
Max players: 8
Primary state directory: <install_dir>/DedicatedServer
Runtime info files: GameInfo.txt, GameID.txt, CoreKeeperServerLog.txt
Template: See server-templates/ckserver/ 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 Core Keeper?

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

Which runtimes can run Core Keeper?

Declared runtimes: Docker or a Linux host process.

Which ports does Core Keeper use?

27015/UDP, 27015/TCP. Named port values remain unknown; review the game guide and configuration for additional requirements.

Can I add mods to Core Keeper?

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

How should I back up Core Keeper?

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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