Dedicated server guide

arma3.headless

Manage arma3.headless with AlphaGSM. Choose a runtime supported by the recorded module capabilities.

Authentication required · 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

Backup hook support is unknown in this snapshot; review the game guide for backup and restore procedures.

Choose a supported runtime

Linux and Docker quickstart

Authentication is required before installation; follow the game guide for credentials, ownership and login prerequisites.

Docker

Complete interactive setup and review game-specific configuration before starting the server. Authentication is required before installation; follow the game guide for credentials, ownership and login prerequisites.

Start the Docker manager ./alphagsm-docker start
Create the game instance ./alphagsm-docker my-arma3-headless create arma3.headless
Complete interactive setup ./alphagsm-docker my-arma3-headless setup
Start the game server ./alphagsm-docker my-arma3-headless start
Check the instance status ./alphagsm-docker my-arma3-headless status

./alphagsm-docker start
./alphagsm-docker my-arma3-headless create arma3.headless
./alphagsm-docker my-arma3-headless setup
./alphagsm-docker my-arma3-headless start
./alphagsm-docker my-arma3-headless status

Host process

Create the game instance ./alphagsm my-arma3-headless create arma3.headless
Complete interactive setup ./alphagsm my-arma3-headless setup
Check the host prerequisites ./alphagsm my-arma3-headless doctor
Start the game server ./alphagsm my-arma3-headless start
Check the instance status ./alphagsm my-arma3-headless status

./alphagsm my-arma3-headless create arma3.headless
./alphagsm my-arma3-headless setup
./alphagsm my-arma3-headless doctor
./alphagsm my-arma3-headless start
./alphagsm my-arma3-headless status

This guide covers the arma3.headless module in AlphaGSM.

Status

arma3.headless is currently ENABLED (AUTH).

Before setup, authenticate Steam or SteamCMD with an account entitled to Arma 3 dedicated server app 233780.

Requirements

screen
Python packages from requirements.txt

Quick Start

Create the server:

alphagsm myheadless create arma3.headless

Run setup:

alphagsm myheadless setup

Start it:

alphagsm myheadless start

Check it:

alphagsm myheadless status

Stop it:

alphagsm myheadless stop

Setup Details

Setup configures:

the game port (default 27015)
the install directory

Useful Commands

alphagsm myheadless update
alphagsm myheadless backup

Notes

Module name: arma3.headless
Default port: 27015

Server variables

After create arma3.headless, 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
`password`	—	string	Password required to connect to the Arma 3 server. Stored as a secret.

Developer Notes

Run File

Executable: See game module source
Engine: Custom

Server Configuration

Config file: See game module source
Template: See server-templates/arma3-headless/ 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 arma3.headless?

Authentication required. Authentication is required before installation; follow the game guide for credentials, ownership and login prerequisites.

Which runtimes can run arma3.headless?

Declared runtimes: Docker or a Linux host process.

Which ports does arma3.headless use?

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

Can I add mods to arma3.headless?

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

How should I back up arma3.headless?

Backup hook support is unknown in this snapshot; review the game guide for backup and restore procedures.

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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