To get started is to visit linuxgsm.com and pick a server to install. Follow the simple step-by-step guide to install your game server on Linux.

Once the installation is complete a working game server will be available. Use the various LinuxGSM commands available to manage the game server.

Read through this documentation to ensure you understand how to configure your game server.

The configuration section will help you understand how to configure both LinuxGSM and the game server.

The command-line tool for quick, simple deployment and management of Linux dedicated game servers.

• User docs: docs.linuxgsm.com

• Dev Docs: dev-docs.linuxgsm.com

Welcome

Welcome to the LinuxGSM documentation covering various topics related to the project.

Contributions to this documentation are welcome and can be submitted via GitHub.

The debug command is used to start your server directly in your current terminal (outside of (tmux) and should only be used for diagnosing issues. If a game server is already running in the background debug will stop it to start a debug session.

Commands

Standard: ./gameserver debug

Short: ./gameserver d

The force-update command bypasses the update check and runs the SteamCMD update regardless of update availability. This will run the SteamCMD update and restart the game server.

Force update is a useful feature for admins that restart their server daily. It allows LinuxGSM to check for updates while restarting the server.

Commands

Standard: ./gameserver force-update

Short: ./gameserver fu

The update-lgsm command updates LinuxGSM to the latest version.

It will automatically update LinuxGSM including the _default.cfg config file to make sure the game server gets the latest settings.

Commands

Standard: ./gameserver update-lgsm

Short: ./gameserver ul

The map-compressor command is used to compress maps for some Unreal engine servers, allowing for faster maps downloads to clients.

Supported Servers

• Unreal Tournament 99

• Unreal Tournament 2004

• Killing Floor

• Red Orchestra

Commands

Standard: ./gameserver map-compressor

Short: ./gameserver mc

The test-alert command is used to send a test alert that is used to ensure that configured alerts are functioning and being recieved.

Commands

Standard: ./gameserver test-alert

Short: ./gameserver ta

Server Resources

• Official Dedicated Server Guide

Telnet

7 Days to Die uses telnet to admin the server. This is enabled by default with no password however will only listen on localhost.

LinuxGSM provides an easy way to start, stop and restart your game server. LinuxGSM knows the location of the server binaries and inserts the start parameters to allow the server to start. LinuxGSM will also run various checks to prevent issues and apply any required server fixes to get the game server running.

Commands

Starting a server

Will start the server in a session allowing the server to run in the background.

./gameserver start

Stopping a server

Stop will attempt a of a game server. Failing this stop will kill the tmux session.

./gameserver stop

Stop only if empty (optional)

If stoponlyifnoplayers setting is enabled LinuxGSM will only stop the server if it is empty and prevent it from stopping otherwise. This feature only works with game servers that can use gamedig.

Restarting a server

Will simply stop, and then start the server.

./gameserver restart

The console command allows access the output of the game server executable. Depending on which server you are running it allows you to see the current activity of the game server, check errors in real time, and input commands.

Commands

Run the following command to access console:

Standard: ./gameserver console

Short: ./gameserver c

Answer y at the prompt.

Exiting the console

To exit the console: Press CTRL + b, then, press d

The validate command will check the server files to make sure they match the SteamCMD repository. This command is useful if game server files are deleted, corrupted or SteamCMD is failing to update.

Validation will overwrite any files that have been changed. This may cause issues with customised servers. For example, if you customise mapcycle.txt, this file will be overwritten to the server default. Any files that are not part of the default installation will not be affected. It is recommended you use this command only on initial installation and if there are server issues.

Commands

Standard: ./gameserver validate

Short: ./gameserver v

change-password resets the TeamSpeak 3 server query password. The server will reboot and a new password will be generated.

Supported Servers

• TeamSpeak 3

Commands

Standard: ./gameserver change-password

Short: ./gameserver pw

Java Requirements

Minecraft: Java Edition required Java 16

Release Settings

Minecraft java edition splits up its release in two ways. Firstly a branch is either classed as a release or a snapshot. A release is a stable version of the game whereas a snapshot is still under development

With LinuxGSM you can specify a specific release/snapshot or the latest release/snapshot. By default, LinuxGSM will use the latest release.

Server Information

An MTA server comes in two parts. MTA itself and then the resources you install. There is the option to install the default MTA resources to your server within LinuxGSM on install or using the ./mtaserver install-default-resources option. There are many resources available so it is recommended that you take a look at the MTA community resources page

Resources

Resources are a key part of Multi Theft Auto. A resource is essentially a directory that contains a collection of files - including essential script and content files, plus a meta file that describes how the resource should be loaded - and runs on a Multi Theft Auto dedicated server.

A resource can be seen as being partly equivalent to a program running in an operating system - it can be started and stopped, and multiple resources can run at once. Its worth remember though, that unlike programs on an operating system, there is no multi-tasking between resources. Resources generally contain content and Lua scripts for game modes, user interfaces and other tasks affecting the players that are connected to the dedicated server on which the resources are running.

For a collection of user created resources, head over to our web page which serves as a place for hosting our community's resources.

The skeleton command created a mirror of the directory structure of a game server. This allows you to create a skeleton directory of custom files, configs, maps etc.

Commands

Standard: ./gameserver skeleton

Short: ./gameserver sk

Skeleton Directory

The skeleton directory is created in skel.

Use Case

Skeleton can be used alongside version control software like or backed up to save custom configurations for a game server. If a change is added to your git repository/backup it is possible to pull/copy the updates to your game server. If you want to re-deploy a game server you can create a fresh installation and pull/copy in the custom changes over the top of the fresh install.

is a VoIP app that allows other applications to send messages via a webhook. This functionality is used to allow users to recieve alerts about LinuxGSM.

Create a Discord Webhook

A webhook is required to post alerts to a Discord text channel

1. Right-click on the text channel you want to use and select Edit channel.

2. Select Webhooks > Create Webhook

3. Name: LinuxGSM

4. Icon:

5. Copy the Webhook URL

6. Turn on discord alert and enter the URL in to the . (~/lgsm/config-lgsm/<gameserver>/common.cfg)

By default, LinuxGSM will use the 0.0.0.0 meta-address. This behavior will allow the game server to bind to all interfaces and allow LinuxGSM to query all available IP addresses. If there are multiple IP addresses available, details will display 0.0.0.0.

Internet IP: LinuxGSM will try to gather the server's internet IP address to be shown in details.

Specific IP: If a specific IP address needs to be set it can be done using the ip setting in the LinuxGSM or game server config files. Depending upon the game server this will allow it to bind to a specific IP address.

Display IP: If you want to change the IP address displayed in alerts you can use the displayip.

monitor checks the game server to ensure the server functioning. First checking the game server process is running then querying the game server to check the game server is responding. monitor is designed to be an automated command that frequently checks the game server, rebooting and alerting if required.

Commands

Standard: ./gameserver monitor

Short: ./gameserver m

How does monitor work?

Monitor first checks that the server process or tmux session is running. If it is, it will then attempt to query the server using gamedig or query_gsquery.py. Should this fail to query it will attempt to query every 15 seconds over 60 second period. Should this fail the server will be rebooted and an alert sent out.

During server start, map change, workshop downloads, the server is unable to answer queries.The monitor will wait for 60 seconds as it is common for servers to stop responding to queries during a map change. This wait prevents monitor from rebooting a server that does not require it.

Automated Monitoring

Monitor is designed to be and automated task, using cronjobs to allow a game server to be frequently checked.

As a reminder, you can edit your cronjobs, typing :

crontab -e

Monitor Cronjob

Use these cron examples to setup automated monitoring.

• A user based cronjob to monitor your server every 5 minutes .

*/5 * * * *  /home/username/gameserver monitor > /dev/null 2>&1

• A root user based cronjob to monitor your server every 5 minutes .

*/5 * * * *  su - username -c '/home/username/gameserver monitor' > /dev/null 2>&1

To learn more about automation, see Cronjobs.

Alert Notifications

To be notified when a server fails alert notifications can be setup , see alerts.

Query Delay

Game Servers do not respond to queries while the server is booting. Query delay prevents monitor from giving a false positive should it query while the server is booting. A timed delay prevents monitor from using query at all during a set time (normally either 1 or 5 minutes) after start, giving the server time to boot and become ready to accept queries. Query delay timer can be adjusted using the querydelay setting.

## Monitor | https://docs.linuxgsm.com/commands/monitor
# Query delay time
querydelay="1"

Monitor Activation

Starting and stopping the game server activates and deactivates monitor. This prevents the server being manually stopped only to be started again by monitor.

LinuxGSM comes with a game server check-update command. All SteamCMD games servers are supported, as well as some other servers such as Teamspeak, Minecraft, Mumble & Factorio.

Commands

Standard: ./gameserver check-update

Short: ./gameserver cu

Unlike the update command check-update will check for any available updates and take no action if no update is available. If there is an update it will send an alert.

Automatic check for update

Scheduled check for updates

A cronjob can be set to run check-update at any given time.

To edit cronjobs, type:

crontab -e

A cronjob can be run as the gameserver user or as root, this choice is down to personal preference. Remember to amend the examples to match a specific game server.

Here is an example of a user-based cronjob to check for an update once an hour.

0 * * * * /home/username/gameserver check-update > /dev/null 2>&1

Here is an example of a root-based cronjob to check for an update once an hour.

0 * * * * su - username -c '/home/username/gameserver update' > /dev/null 2>&1

crontab.guru is a great resource to generate cronjobs.

The details command allows access to various useful information about the game server. Details are gathered from configs, parameters and server queries.

Commands

details

Standard: ./gameserver details

Short: ./gameserver dt

postdetails

postdetails (using hastebin) is used to share server details, to help with support, while hiding sensitive information:

Standard: ./gameserver postdetails

Short: ./gameserver pd

Details Provided

Various relevant details are provided including:

• Distro Details

• Performance

• Disk usage

• Server Name

• Server IP

• Server Ports

• Passwords

• Config File

• Backups

• Server parameters

Example output

Distro Details
===============================================================================================================================================================
Distro:    Debian 7.7
Arch:      x86_64
Kernel:    2.6.32-042stab102.9
Hostname:  vps86887.ovh.net
tmux:      tmux 1.6
GLIBC:     2.13

Performance
===============================================================================================================================================================
Uptime:    0d, 17h, 36m
Avg Load:  0.00, 0.02, 0.00

Mem:       total   used   free
Physical:  1.0G    1.0G   17M
Swap:      128M    25M    102M

Disk Usage
===============================================================================================================================================================
Disk available:  5.4G
Serverfiles:     1.6G
Backups:         4.8M

Fistful of Frags Server Details
===============================================================================================================================================================
Server name:  Fistful of Frags Server
Server IP:    192.168.1.1:27015
RCON password:  rconpassword
Status:       OFFLINE

Service name:  fof-server
User:          fofserver
Location:      /home/fofserver
Config file:   /home/fofserver/serverfiles/fof/cfg/fof-server.cfg

Backups
===============================================================================================================================================================
No. of backups:    1
Latest backup:
    date:          Fri Jan 23 15:54:52 CET 2015
    file:          /home/fofserver/backups/fof-server-2015-01-23-155447.tar.gz
    size:          4.8M

Command-line Parameters
===============================================================================================================================================================
./srcds_run -game fof -strictportbind -ip 192.168.1.1 -port 27015 +clientport 27005 +tv_port 27020 +map fof_depot +servercfgfile fof-server.cfg -maxplayers 16

Ports
===============================================================================================================================================================
Change ports by editing the command-line
parameters in ./fofserver.

Useful port diagnostic command:
netstat -atunp | grep srcds_linux

DESCRIPTION  DIRECTION  PORT   PROTOCOL
> Game/RCON  INBOUND    27015  tcp/udp

Logs are an important part of monitoring a server as it allows you to know what has been happening. LinuxGSM has a log directory that allows you to track the gameserver, console and LinuxGSM itself.

If your user is gameserver, then LinuxGSM logs are located in the following directory:

/home/gameserver/log

This "log" directory contains two other directories:

• script, logs LinuxGSM script activity

• console, logs gameserver [console](../commands/console.md) output

• game, is a redirect to the game server log files if available.

  Settings

You can alter these settings to change LinuxGSM behavior:

logdays="7" # How long logs are kept
consolelogging="on" # Turning this to off will disable console logging

Note: logdays="0" means logs will be removed if older than 24h.

Log clearing

LinuxGSM clears outdated logs according to logdays variable setting. This will affect script and console logs, as well as common game logs.

Gamelogs management

LinuxGSM also clears logs from common locations to prevent them from using gigabytes of disk space, including:

• ${systemdir}/logs

• ${systemdir}/*/logs

• ${systemdir}/addons/sourcemod/logs

• ${systemdir}/data/darkrp_logs

• ${systemdir}/data/ulx_logs

Note: ${systemdir} designates the location of your game server installation

Game developers sometimes make available several builds of the game server on Steam, often to allow beta testing of new releases. These builds are made available via branches (betas) and can be entered in the LinuxGSM Config.

Find Branches

A list of all available branches for a game server are listed on SteamDB under the appid depots.

Select a Branch

The default SteamCMD branch is public. However, it is possible to use other builds by entering a branch name in the branch setting in your LinuxGSM config.

# Steam App Branch Select
# Example: "latest_experimental"
branch="staging"

Beta Password

Some branches require a password. This can be done by entering a password in thebetapassword setting in your LinuxGSM config.

betapassword="branchpassword"

LinuxGSM allows alerts to be received using various methods, should the game server require your attention.

Alert Settings

Alert settings can be changed in LinuxGSM config

More Info

More info allows you to get further info about an alert using hastebin.com. Many alerts only give basic info, unlike email. More info displays the same output as email in a link within a basic alert.

# More info | https://docs.linuxgsm.com/alerts#more-info
postalert="off"

Display IP

The IP address you want to be displayed in alerts.

By default, the LinuxGSM alert will display the external internet facing IP. Failing this will fall back to the server IP. If the IP is incorrect it can be manually set using displayip="".

# Display IP | https://docs.linuxgsm.com/alerts#display-ip
displayip=""

Some games require FastDL to be case insensitive, apache2 is case sensitive by default. Enabling apache2 mod_speling ignores case sensitivity on a LAMP stack. This guide applies to debian and ubuntu. At the bottom of this page are external guides that include CentOS/Fedora. This workaround will not work on shared webhosting where editing apache2 files is not available.

Enable mod_speling:

a2enmod speling

Restart apache:

service apache2 restart

Apache needs to be told which directories mod_speling is applied to, open the webserver's .conf file located inside /etc/apache2/sites-available/ and set AllowOverride to All.

Example:

<Directory /var/www/html/>
	Options Indexes FollowSymLinks
	AllowOverride All
	Require all granted
</Directory>

Set apache2 to use the .conf file you just edited:

a2ensite name_of_.conf_file

In /var/www/html/ or your webserver directory, create a .htaccess file with this:

<IfModule mod_speling.c>
CheckSpelling On
CheckCaseOnly On
</IfModule>

Test the configuration by creating a file, like test.txt, and see if it can be opened in browser by typing TEST.txt, test.TXT, etc. If it works, you are finished.

mod_speling Documentation

Guides from other sources:

Wikitechy mod_speling Guide

a2Hosting mod_speling Guide

TODO

Install Sourcemod and Metamod:Source

Game server config files are the configuration files used by the game server to store various game server settings, such as the server name, maximum players, map cycle, etc. These settings can be edited to customise a game server. Different game server configs can use different syntax and work slightly differently, but all do the same basic job of editing a game server settings.

Config file's location

The details command will provide you with some config file information. However, some servers do use multiple config files.

Command

./gameserver details

Sample output example

./gmodserver details

gmodserver Script Details
==================================================================================
Service name:        gmod-server
gmodserver version:  170110
User:                ultimatebyte
GLIBC required:      2.15
Email alert:         off
Pushbullet alert:    off
Update on start:     off
Location:            /home/gmodserver
Config file:         /home/gmodserver/serverfiles/garrysmod/cfg/gmod-server.cfg

LinuxGSM Custom Config's

Whenever possible, LinuxGSM provides basic easy-to-use game server configuration files. A dedicated repository has been made so all server admins can benefit, even Windows admins.

This configuration file is automatically downloaded upon server installation.

Config file naming

Whenever possible, LinuxGSM uses a custom name for configuration files that contains the ${servicename} variable in it in order to allow the running of multiple game servers with different config files. If the game does not allow for that, then the usual name will be used.

Example

For source servers, the default server.cfg is not used with LinuxGSM. Instead if you're running ./csgoserver, then the config file will be called csgoserver.cfg.

Missing configuration file handling

LinuxGSM will always check a config file is present when starting a server. If a config file is missing, it will re-download the default one or give a warning.

Where are the settings I'm looking for?

Game servers have many different ways of managing settings. Some are set within start parameters, while some are set within a configuration file.

One of the goals of LinuxGSM is to make managing these as easy as possible, by providing all important settings out of the box, wherever they are. There is no general rule about where config files are set. It is a good idea to look for the official documentation of the game server that you're trying to run in order to find relevant information about settings.

I found missing settings or an error with config files?

If you found settings that are absent from the default configuration file provided by LinuxGSM that would be a useful addition, then you can open an issue or a pull request.

Server Resources

Official Resources

Sven Co-op Forums

Sven Co-op Official Discord

The discord contains information for Sven Co-op under the information tab including mapping guides, server config information, and angelscript documentation, among other things.

Sven Co-op Map Database

Sven Co-op Tips

Reminder: Sven Co-op is incompatible with both CentOS and Fedora as libssl.so.1.0.0 is not available

Survival Mode settings, can be set in svenserver.cfg

//Default Survival state (enabled by default) 1=on 2=off
mp_survival_mode 

//1=Players can vote to enable/disable survival 2=Players can't vote on this
mp_survival_voteallow 

//Number of retries before "next map" vote starts. -1 is infinite,  3 is default
mp_survival_retries 

//Minimum number of players needed to start Survival mode
mp_survival_minplayers 

Sven Co-op Guides

Make FastDL Webserver Case Insensitive

Server Resources

• Official Dedicated Server Guide

Valheim Servers require Passwords

Valheim servers require a server password to start a server. This means it is not possible to connect to a Valheim server unless you know the password.

Direct connect to a Valheim Server

The Valheim in-game browser can be slow, as a workaround you can directly connect to a server in-game through the Join Game tab by pressing the Join IP button, or by adding a server to your Steam server browser favorites. To access the Steam server list, at the top left of the Steam library window go View > Game Servers > Favorites, and click the blue + button. Use ./vhserver details to list the current query port. The default port is 2457.

Long Server Names

Valheim has been previously known to have problems with long server names and special characters, if you are having trouble connecting to a server try making its name shorter or remove special characters.

Other Resources:

Add admins to Valheim server:

https://nodecraft.com/support/games/valheim/adding-admins-to-your-valheim-server

There are hundreds in integrations available on IFTTT allowing you to send alerts in all sorts of different ways to various services and devices. This functionality is used to allow users to recieve alerts about LinuxGSM.

Setup IFTTT Webhook

To enable IFTTT you will need to setup a Webhooks integration.

1. Visit https://ifttt.com/maker_webhooks

2. Login and connect the Webhooks integration

3. Select Documentation to get your IFTTT API key.

4. Paste the API key into LinuxGSM settings.

# IFTTT Alerts | https://github.com/GameServerManagers/LinuxGSM/wiki/IFTTT
iftttalert="off"
ifttttoken="e-Yg8blVGDA15ewWvtZjUe"
iftttevent=""

Create an IFTTT event name

An event name is a word used to trigger IFTTT event. This word is used when setting up an applet and can be any word you choose.

# IFTTT Alerts | https://github.com/GameServerManagers/LinuxGSM/wiki/IFTTT
iftttalert="off"
ifttttoken="e-Yg8blVGDA15ewWvtZjUe"
iftttevent="linuxgsm_alert"

Values

IFTTT allows 3 different values to be sent using the webhook; Value1, Value2 and Value3. LinuxGSM sends different data for each value as listed below.

• Value1: Sends the name of the server e.g csgoserver

• Value2: Sends an alert subject e.g Alert - csgoserver - Test

• Value3: Sends an alert summary message.

Testing LinuxGSM Alert. No action to be taken.
Game Squad
Server name LinuxGSM Server 1
Hostname ubuntu.example.com
Server IP 1.2.3.4:27015

How to create an applet

1. Create a New applet

2. Select the Webhooks service

3. Choose Receive a web request

4. Enter your Event Name and click Create Trigger

5. Select an action service.

6. Give the applet a name and save.

Rocket.chat is an open-source collaboration tool.

Create a Rocket.chat Webhook

1. Follow the Rocket.chat guide on how to create an incoming webhook.

2. Copy the Webhook URL.

3. Turn on Rocket.chat alerts and copy the URL into the LinuxGSM settings. (~/lgsm/config-lgsm/<gameserver>/common.cfg)

Pushover allows the sending of push notifications to various devices such a PC, phone and tablet. This functionality is used to allow users to receive alerts about LinuxGSM.

Setup Pushover Alerts

A Pushover application and your user key is required to send messages to Pushover.

Visit here to create a new application.

• name: LinuxGSM

• Check the box agreeing to the Terms Of Service.

Once the application has been created get the API key and user key (which can be found in the pushover dashboard). Turn on Pushover alerts and paste in API key and user key in the LinuxGSM config.

# Pushover Alerts | https://github.com/GameServerManagers/LinuxGSM/wiki/Pushover
pushoveralert="on"
pushoveruserkey="yourpushoverid"
pushovertoken="b5u24t1wua34gmh14kr1s3erkwi7tl"

For a game server to be seen online it normally has to register itself on a master server list. Valve maintains a master server for many different games. The master server is used to populate the server browser.

Master Server Check

LinuxGSM can check that supported game servers are listed on the steam master server. This is useful for confirming that the server is actually registering and to help diagnose issues.

You can check that your server is listed on the master server by using ./gameserver details

Master server:    listed

steammaster="true"

Troubleshooting: Server Missing from Master Server List

There are instances when a game server might not appear in the server list due to several common reasons:

• Server Loading Time: Please be patient while the server loads, as it may take some time before it becomes visible. Depending on the game server type, certain servers require additional time for tasks like map seeding or loading mods.

• Blocked or Misconfigured Ports: Ensure that the ports are correctly set up and not blocked. To verify the connection, try connecting directly to the server.

• Filtering in Server List: Check that you have not applied any filters in the server browser. Filters like specific maps, "Empty Server," or "Password Protected" should be unchecked to display all available servers.

• Server Browser Limitations: It's possible that the server browser functionality of the game might not list all available game servers. In such cases, not all servers may be visible in the server list.

Many admins who have tried, reported a local server does not appear on the LAN tab in the steam browser.

Workarounds

Console Command

Connect using the console command.

connect IP:PORT

If the port is 27015, then you can just use : connect IP

connect 192.168.1.10:27025

Add server to favourites

Add the server to the server browser's favourites. If in-game, then go to the legacy browser if applicable to find it. The syntax to use is the same as for the console connection.

Fix

As this github issue shows, there might be a possible configuration that fixes the issue, but LinuxGSM devs were not able to reproduce it at the time of writing the doc, so this information is purely experimental and you are welcome to update it or post on the issue if you have useful information to share about it.

1. Edit your Start Parameters using your LinuxGSM Config files

2. Change ip="0.0.0.0" to an actual interface IP, for example ip="192.168.1.10" ; this will allow LinuxGSM to monitor and query your server properly.

3. In the fn_parms section, add +sv_lan 1 and make sure you replace -ip ${ip} with -ip 0.0.0.0

4. Make sure your server main port listens to one of these IP or IP ranges: 4242 ; 26900-26905 ; 27015-27020 ; 27215

is an opt in voluntary feature that allows you to provide selected information about your game server to be displayed on by enabling the stats setting.

How is the information used?

All data collected is used to provide insight into which game servers, distros, and servers are popular with game server admins. This will assist in prioritising LinuxGSM development and give me (Daniel Gibbs) a never before insight into the number of people using LinuxGSM. This is a massive personal motivator as it has previously been difficult to know how many people actually use LinuxGSM.

The collected data is publicly available to view in a dashboard on

What information is collected?

Below is a list of types of data collected

Basic Info

• Game Server - Knowing the game server you are running gives insights into which servers are popular and can help shape development priorities.

• Distro - It is useful to know which distros LinuxGSM is being used on to help focus development.

• LinuxGSM Version - The currently installed version of LinuxGSM.

• Alert Types - The alert types that have been turned on.

Game Server Usage

Gathering game server usage helps set the minimum required hardware for each game server. This is particularly useful for resource-intensive servers.

• CPU Used - The CPU usage in MHz (rounded to the nearest 100MHz) of the game server.

• RAM Used - The memory usage in MB (rounded to the nearest 100MB) of the game server.

• Disk Used - The storage taken by the game server (serverfiles directory) of the game server.

Server Hardware

Gathering information on the server hardware being used to host a Game Server. This provides useful stats on the sorts of hardware game server admins are deciding to use.

• CPU - Gathers the CPU Manufacturer and Model.

• RAM - Total server RAM.

• Disk Space - Total server disk space.

Country of origin

The country of origin is shown identifying where in the world LinuxGSM is being used.

The country of origin is no longer working with GA-4 but might be available again in the future

How is Information collected?

LinuxGSM Stats uses Google Analytics (GA-4) event-driven API to collect information to allow Daniel Gibbs to get an idea of which game servers and distros are popular identify system requirements for game servers and know the sort of servers game server admins are using.

Is my data anonymous?

Short answer - Yes

Long answer - All information gathered is anonymous, the server IP address, hostname, etc., or other identifying information is not collected. When LinuxGSM Stats is first run it creates a which is a randomly generated ID to allow Google Analytics to identify your unique information anonymously. Since this ID is random there is no way to know where the info is from, only that it is from the same sender.

The UUID is located inlgsm/data/uuid.txt,if this file is deleted a new UUID will be generated.

Since LinuxGSM is open-source you can also see how the data is gathered by looking at the info_stats.sh file.

How frequently is the data sent?

Data is sent every time the monitor runs as this is the only way to regularly send data.

How can I enable this feature?

To enable LinuxGSM Stats simply add the stats="on" setting to the common.cfg file. This can also be enabled on install.

Game Resources

Auto Refresh

Autorefresh can lag the server when certain Lua files are edited. This happens when the refreshing cascades. This can be unwanted behavior when editing the scripts of a large project on a live server.

To disable autorefresh, add -disableluarefresh to parms.

Loading Screen

Loading screens are added by defining a website with sv_loadingurl, which is in gmodserver.cfg by default. This file overrides other files.

Gamemode

Gamemode is changed by editing start parameters in the LinuxGSM config file.

Other game modes like Zombie Survival can be found on the .

Workshop

For Garry's Mod, add the collection ID in using wscollectionid setting. This will download the collection when the server starts.

Mounting Game Content

Some Garry's Mod addons like TTT use content from other games. To do this the content will need to be "mounted".

This guide is for installing another game server with LinuxGSM and using that content, copying that game's files, and mounting the game to Garry's Mod. This guide is for CS:S but should work for any other game.

First install a Counter-Strike: Source server, if you already have a server installed this step can be skipped. If the server will be deleted after copying files.

Copy the cstrike the directory from the Counter-Strike: Source to the Gmod folder.

Ensure that the copied files are owned by the gmodserver user.

Open mount.cfg file.

Add game to mount.cfg

Restart the server. Check if the mount was successful by changing the level to a mounted map with console or rcon.

Ports

• Game Port Default: 7777 UDP Handled by: LinuxServer-KFEngine.ini

• Query Port Default: 27015 UDP Handled automatically or handled by parameters. The formula for finding query port assigned automatically is 19238 + assigned game port.

• Web Admin Default: 8080 TCP Handled by: KFWeb.ini

• Steam Port Default: 20560 UDP Handled automatically. The formula for finding the steam port is 12783 + Game Port.

Resources

Server Config Information

LinuxGSM installations contain configSubDir=servername in the command line by default, which creates a folder for config files named after the server. The default directory is /home/user/serverfiles/KFGame/Config/kf2server . Use these files to change server settings.

Workshop

Workshop content is added in LinuxServer-KFEngine.ini in the OnlineSubsystemSteamworks.KFWorkshopSteamworks section

This will only work for Workshop items that the server downloads itself, that are listed in the [OnlineSubsystemSteamworks.KFWorkshopSteamworks] section as described above.

1. Make sure that the server is not running. If it is running, the Workshop setup will be overridden the next time you restart the server.

2. Find the section [IpDrv.TcpNetDriver] in the PCServerEngine.ini config file.

3. Add the line "DownloadManagers=OnlineSubsystemSteamworks.SteamWorkshopDownload" to that section. If there are other "DownloadManagers=" lines, make sure this one is the first.

4. Do not delete anything from this section, except (optionally) other DownloadManagers= lines.

allows the sending of push notifications to various devices such a PC, phone and tablet. This functionality is used to allow users to recieve alerts about LinuxGSM.

Enable Pushbullet alerts

To enable Pushbullet alerts an Access Token needs to be generated. Access Tokens are available from Pushbullet setting found .

Once you have created a token insert it in to you .

Enable Channels

Alerts can also be sent to Pushbullet channels. Channels are push notification feeds that can be subscribed to. Anything you push to a channel will instantly go to all of the channel's subscribers. Only the owner of a channel can push to it.

Visit to generate a channel.

Once you have created the channel set the channeltag in the script without using hash #.

LinuxGSM cannot always provide support for specific game servers. However, there are various support forums available for specific game server support that may be useful. Below is a list of useful links support forums:

LinuxGSM comes with an game server update command. All games servers are supported, as well as some other servers such as Teamspeak, Minecraft, Mumble & Factorio.

Commands

Standard: ./gameserver update

Short: ./gameserver u

Update will check for any available update, taking no action if no update is available. If there is an update it will apply the update, restarting the server if already running.

Automatic update

Update on start

It is possible to update a game server on start, by editing the LinuxGSM config.

updateonstart="on"

This will take longer for the game server to start but can be useful for servers that are kept offline most of the time.

Scheduled updates

A can be set to run update at any given time.

To edit cronjobs, type:

crontab -e

A cronjob can be run as the gameserver user or as root, this choice is down to personal preference. Remember to amend the examples to match a specific game server.

Here is an example of a user based cronjob to check for an update once an hour.

Here is an example of a root based cronjob to check for an update once an hour.

It is recommended to check for updates once per hour.

is a great resource to generate cronjobs.

Custom Mods and Maps

Custom Mods and Maps are supported in Insurgency: Sandstorm via . Please use this basic guide to get started using custom mods more in-depth information can be found at

Get an Auth Token

To get started you will need a mod.io account, once you have signed in, click your username as the top right, and click API Access from the left navigation.

Under OAuth 2 Management > Generate Access Token, enter a name to give your token and give it read access and click Create Token.

Once the token is generated you will need to copy it to your game servers Engine.ini. Paste the following into Engine.ini and replace TOKEN HERE with your access token.

Add a Mod/Map

Add the -Mods parameter to your game server .

Next you will need to specify which mods you want to add to your game server.

Create the Mods.txt file located Insurgency/Config/Server/Mods.txt

In the txt file you will need to specify each mod ID line by line. The mod ID can be found on the mods details page at . Once restarted the mod will be available to use.

To use this custom map you will need to add it to your mapcycle and if required, your default map

Create MapCyle.txtand add the custom map to your mapcycle.

If you want the custom map to be the default edit your

Once the server is restarted the custom map should be available on your game server.

Resources

A firewall is a security device that blocks or allows network traffic on to a system or network to prevent unauthorised access and help protect from malicious attack. Firewalls can also assist in rate limiting traffic to prevent too much traffic being sent to a system. This is useful for game servers to help prevent a DDoS (Distributed Denial-of-Service) attack that can overwhelm a game server.

Firewalls can be physical hardware devices that sit on a network, or software that sits on a server or desktop device. This page will focus mainly on software firewalls.

DDoS protection

A (DDoS) attack occurs when multiple systems flood the bandwidth or resources of a targeted system, usually one or more web servers. Such an attack is often the result of multiple compromised systems (for example, a botnet) flooding the targeted system with traffic. A botnet is a network of zombie computers programmed to receive commands without the owners' knowledge. Server providers may offer DDoS protection, such as Arbor, that will mitigate such attacks before it reaches a server. However, this feature is often provided as a premium feature meaning often only available on more expensive servers. Some providers may also provide sub-standard protection that may incorrectly filter traffic. So be aware of what protection if a server provider has to protect your server.

iptables

is the most commonly used and supported Linux firewall utility, with many other tools interfacing with it To see iptables rules: iptables -L To flush (erase) iptables rules: iptables -F

Protecting a game server

One way to protect a game server is to rate-limit incoming connections to the game server. Iptables will do this by dropping packets from a connection if it is sending too much traffic. This is particularly important if using the LinuxGSM monitor feature, as monitor relies on the query port being available. Should the query port be flooded with traffic it may become unavailable and LinuxGSM will assume the game server has crashed and reboot. The below example will rate-limit traffic on port 27015 (the default for source engine games) to 10 requests every 60 seconds. Different game servers may require different rate limits, so it may be important to adjust the limits to ensure legitimate traffic does not get blocked.

Checking connectivity

Once you have created your port forwards and want to see if the internet can access the ports, there is a website called . Simply change the port to your game port (27015 for example) and it will tell you if it can access it on your computer. This will help you verify your port forward was created successfully.

Networks with multiple gateways

Some game servers (like Rust) register their external IP with steam when they startup. When you create port forwards to the game server, you need to make sure the port forward is on the address the outbound traffic is on. For example, say you have a router with two IPs from different ISPs;

If your traffic is going out WAN0 you need to put the port forwards on the 71.2.5.23 address. If your outbound traffic is going out WAN1 you would need to put your port forwards on 65.13.29.46.

Symlinks create multiple paths to a file or directory and are useful for saving space or having 1 set of files for multiple installs.

Using Symlinks to Save Storage Space

This guide is for pointing multiple directories to the same folder using ln command. Ln creates hardlinks and softlinks, the -s variable creates softlinks. These can be compared to shortcuts on windows, and are going to be used in this guide.

Example guide using two "one server + one user" installs with Sven Co-op:

Gameserver folder 1: /home/svencoop/serverfiles/svencoop_downloads/

Gameserver folder 2: /home/svencoop2/serverfiles/svencoop_downloads/

Shared folder /home/svencoop_content/svencoop_downloads/

The command to link these would be ln -s /shared_folder/ /gameserver_folder/

ln -s /home/svencoop_maps/svencoop_downloads/ /home/svencoop/serverfiles/

ln -s /home/svencoop_maps/svencoop_downloads/ /home/svencoop2/serverfiles/

Change the game server folder ownership to be under their respective users and you are done.

chown svencoop /home/svencoop/serverfiles/svencoop_downloads

chown svencoop2 /home/svencoop2/serverfiles/svencoop_downloads

The files in the symlinks do not need be owned by the gameserver users and will not be recognized by linuxGSM's ownership check. That being said, make sure they can be read by the gameserver users.

Symlink resources

TO-DO

Avoid a security breach and allow you to run multiple servers

(NOTE: This method is detailed further . The web page also describes how to give certain users the default full access to listing all processes.)

By default, a user can see all started processes from other users, which is bad, but also their start parameters, which is pretty dangerous. Those start parameters can contain sensitive information, such as RCON password, Steam API keys and GSLT upon start, a Rust dedicated server is checking if the process name started by any user, and will prevent you from running it again if it finds it, displaying "Player is already running".

To avoid that, run:

And to keep the changes upon machine reboot:

You still need to make one user per server, change ports, and repeat the install process. (See for more info)

Default ports

Both Source engine and GoldSrc engine use the following ports by default.

• Game Port: 27015

• Query Port: 27015

• RCON Port: 27015

• Client Port: 27020

• Source TV: 27005

Static Port Mapping (NAT/Docker)

The port that is configured in the start parameters must be the port that is exposed to the Internet. This is because the game server reports the port that it is configured in start parameters to use to the master server. If this does not match the game client will not be able to connect to the server.

Stop mode allows a game server to gracefully shutdown by sending a stop signal to the server. The stop signal might be one of the various commands such as stop,quit,exit etc. In some cases, this is important to give the server time to save its state.

Many game servers require start parameters, these are command-line options that are set with the server executable when the server starts.

Using game server configs over parameters is preferred, however, sometimes this is not an option. When this is the case only parameters or a mixture of game server config and parameters will be used.

Parameters being used by the game server can be found in ./gameserver details. To alter them, you will need to edit LinuxGSM config files.

Predefined Parameters

LinuxGSM often uses predefined parameters that can be edited. This makes adjusting common settings easier and allows them to be displayed in ./gameserver details.

## Predefined Parameters | https://docs.linuxgsm.com/configuration/start-parameters
defaultmap="map_name"
gamemode="game_mode"
maxplayers="42"
port="27015"
sourcetvport="27020"
clientport="27005"

Additional Parameters

Additional command-line parameters can be added to the startparameters setting.

Anything added will be appended to the server executable binary.

Basic Example

Full Example

## Server Parameters | https://docs.linuxgsm.com/configuration/start-parameters#additional-parameters
startparameters="-game nmrih -strictportbind -ip 91.121.72.41 -port 27015 +clientport 27017 +tv_port 27016 +map nmo_broadway +servercfgfile nmrih-server-1.cfg -maxplayers 8"

Parameters reference

• 7 Days to Die

• Gold Source Servers

• Source Dedicated Servers

• Memories Of Mars

• Natural Selection 2

• Rust

• Squad

• Killing Floor 2

To automate LinuxGSM you can set scheduled tasks using cronjobs, to run any command at any given time.

Commonly used scheduled tasks are:

• Automatically check for updates (update command)

• Automatically check for server crash and restart if needed (monitor command)

• Automatically keep LinuxGSM up to date (update-lgsm command)

• Automatically restart the server at a given time (restart command)

• Automatically update and restart the server (force-update command)

Crontab

To access and edit your cronjobs use crontab.

crontab -e

Cronjob as a user or root

It is possible to set up cronjobs as any user including root. The recommended way is to set up cronjobs using the game servers user account. However, If you run several game server installations on your server you may want to centrally manage cronjobs then using root.

User cronjob

* * * * * [/path/to/script] [command] > /dev/null 2>&1

Root cronjob

* * * * * su - username -c '[/path/to/script] [command]' > /dev/null 2>&1

Cronjob Timing Examples

Every single minute

* * * * *

Every 30 minutes

*/30 * * * *

Every hour

0 * * * *

Every two hours

0 */2 * * *

Every two hours at 30 minutes past the hour

30 */2 * * *

Every day at 5:10 PM

10 17 * * *

Every Wednesday at 1 AM

0 1 * * * 3

Every Five Days at 1 AM

0 1 */5 * *

Cronjob Generator

If you are not used to setting up cronjobs you can use crontab.guru as a great reference to get started.

LinuxGSM Cronjobs examples

Daily cronjob

Here is an example of a user based cronjob for a daily restart at 5 am.

0 5 * * *  /home/username/gameserver restart > /dev/null 2>&1

Here is an example of a root based cronjob for a daily restart at 5 am.

0 5 * * *  su - username -c '/home/username/gameserver restart' > /dev/null 2>&1

Every X Time cronjobs

Here is an example of a user based cronjob to monitor your server every 5 minutes.

*/5 * * * *  /home/username/gameserver monitor > /dev/null 2>&1

Here is an example of a root based cronjob to monitor your server every 5 minutes.

*/5 * * * *  su - username -c '/home/username/gameserver monitor' > /dev/null 2>&1

Complete Example

Below is a recommended basic example and will do the following:

• Monitor your server every 5 minutes.

• Check for an update every 30 minutes, update and restart only if an update is detected.

• Restart and check for an update every day at 4:30 AM

• Update check and update LinuxGSM every Sunday at midnight.

*/5 * * * * /home/username/gameserver monitor > /dev/null 2>&1
*/30 * * * * /home/username/gameserver update > /dev/null 2>&1
30 4 * * *  /home/username/gameserver force-update > /dev/null 2>&1
0 0 * * 0 /home/username/gameserver update-lgsm > /dev/null 2>&1

Using systemd

systemd is the default init system for most modern distros.

You need to create a service file in /etc/systemd/system/

Example ts3server.service

[Unit]
Description=LinuxGSM Teamspeak3 Server
After=network-online.target
Wants=network-online.target

[Service]
Type=forking
User=ts3server
WorkingDirectory=/home/ts3server
#Assume that the service is running after main process exits with code 0
RemainAfterExit=yes
ExecStart=/home/ts3server/ts3server start
ExecStop=/home/ts3server/ts3server stop
Restart=no

[Install]
WantedBy=multi-user.target

Replace the user and paths to fit your setup.

You need to reload the systemd-daemon once to make it aware of the new service file by systemctl daemon-reload

Now you can do

systemctl start ts3server # Start the server
systemctl stop ts3server  # Stop the server
systemctl enable ts3server # Enable start on boot
systemctl disable ts3server # Disable start on boot

Crontab

The crontab will allow you to create cronjobs that allow you to run a command on a set time or on boot. The below example uses @reboot that will run a command on boot.

    @reboot '/home/username/gameserver monitor' > /dev/null 2>&1

Using monitor command

After a reboot, any game server that has a "started" status will be started on boot. Servers that were manually stopped will remain stopped.

crontab -e
@reboot su - username -c '/home/username/gameserver monitor' > /dev/null 2>&1

To learn more, see cronjobs and automated monitoring.

Using start command

Start a game server unconditionally, even if you manually stop a server.

crontab -e
@reboot su - username -c '/home/username/gameserver start' > /dev/null 2>&1

To learn more, see Start-Stop-Restart

rc.local

rc.local is another method to run scripts on boot. Any commands added to the rc.local file will run on boot.

nano /etc/rc.local
su - username -c '/home/username/gameserver start'

LinuxGSM allows for the simple installation of game servers. The installer is designed to get a game server to a working state allowing the game server to be started right away.

The installer will:

• Create required directories

• Install/advise on required dependencies

• Download the game server files

• Load config files

• Apply any fixes required to get the game server working

Commands

Standard Install

The standard installation is the default installation method that requires user interaction.

Standard: ./gameserver install

Short: ./gameserver i

Auto Install

Auto install is useful for automatic server deployments as no user prompt is required.

Standard: ./gameserver auto-install

Short: ./gameserver ai

Installation

1. Make your script executable:

chmod +x gameserver

1. Run the install command: ./gameserver install or ./gameserver auto-install to bypass any prompts.

2. Follow on-screen instructions.

Install Dependencies

Installation of dependencies requires either sudo or root access. LinuxGSM can automatically install dependencies if the user has sudo or is root.

Dependencies as root

As root run ./gameserver install and the installer will complete a dependency installation only, ignoring the other installation steps.

Dependencies as sudo user

If a user has sudo access the installer will prompt to enter the sudo password to automatically install dependencies. If sudo is not available the installer will advise on the command required to install dependencies.

Common Installation Issues

User Permission Issues

LinuxGSM may fail to run if the correct permissions have not been used. This fault commonly occurs if an admin has not correctly followed installation instructions found on https://linuxgsm.com

Common faults include:

• Trying to install the LinuxGSM as root.

• Trying to install LinuxGSM in a directory not owned by the correct user.

• Not making gameserver file executable using the chmod +x command.

If trying to run as root LinuxGSM will fail to run. See FAQ.

To check if the correct user owns the directory or gameserver file, use ls -al

Example output

drwxrwxr-x  5 nmrihserver nmrihserver 4096 Jul 17 20:25 lgsm
drwxr-xr-x  4 nmrihserver nmrihserver 4096 Aug 27  2015 log
-rwxrwxr-x  1 nmrihserver nmrihserver 3885 Aug  9 23:04 nmrihserver
drwxrwxr-x  8 nmrihserver nmrihserver 4096 Jul 17 20:32 serverfiles
drwxrwxr-x  3 nmrihserver nmrihserver 4096 Jul 17 20:25 .steam
drwxrwxr-x  8 nmrihserver nmrihserver 4096 Aug 19 16:00 Steam
drwxrwxr-x  6 nmrihserver nmrihserver 4096 Aug 19 16:00 steamcmd

If some files/directories are not owned by the correct user, use the chown command. Login as root and use the following command, changing the details to match your server

chown -R username:username /home/gameserver

chown -R csgoserver:csgoserver /home/csgoserver

Poor Network Connection to Steam servers

If the connection to the Steam servers is poor (quite common), the SteamCMD download can fail. This is why LinuxGSM will always ask you if the installation was successful allowing admins to retry the download should it fail.

If there are still issues downloading try the validate option.

./gameserver validate

If downloading is still failing it may be worth contacting your server provider to confirm Steam servers are not being blocked for any reason.

It is also worth searching the internet for issues relating to the error message you receive.

Not Enough Storage

Some game servers take up a significant amount of disk space. If you are having issues downloading check that your server has enough space available.

To check your available storage, use:

df -h or ./gameserver details

DNS Issue

Make sure you can ping using a hostname.

ping google.com

Should this fail, your server may not have DNS lookup correctly configured. https://www.cyberciti.biz/faq/linux-setup-dns-lookup/

FastDL (Fast Download) allows the client to download custom server content (maps, materials, models, particles, sounds, fonts, images) from a web server.

It is used to offload content downloads to a web server instead of relying on source servers (SRCDS) that only allows 20KBps downloads to clients. Content on the web server can be compressed to further speed up the download process. This means that custom content downloads much faster.

Valve now use steam workshop for most custom content however FastDL is still required in some cases.

LinuxGSM FastDL automatically creates the web directories and compresses the content for you.

Supported Servers

• All Source engine servers

Commands

Standard: ./gameserver fastdl

Short: ./gameserver fd

Supported file formats

• Maps (.bsp)

• Materials (.vtf, .vmt, .png, .svg)

• Models (.vtx, .vvd, .mdl, .phy)

• Particles (.pcf)

• Sounds (.wav, .mp3, .ogg)

• Fonts (.otf, .ttf)

• Images (.png, .svg)

Requirements

• Web server on the game server (Apache/Nginx).

  or

• Access to a remote web server.

Usage

Generate Compressed files

Run the FastDL command on your main LinuxGSM script. This will create a new directory /home/gameserver/public_html/fastdl

./gameserver fastdl

Create A virtual Host (local Apache web server)

If Apache2 is being used a virtual host pointing to the newly created public_html directory can be used.

Tip: Apache2 mod "userdir" is useful if the Linux server is hosting multiple game servers, as it creates a url for the current user http://yourwebsite.ltd/~username.

Tutorial on setup of Apache2 server with Virtual Hosts

Here is an example of setting up Apache2 using a subdomain.

This works for Apache 2.4+ and when using a domain name. If you have got a different configuration, refer to the Apache2 documentation.

Firstly make sure your subdomain redirects to your game server and that Apache2 is correctly installed and started. Create a virtual host in order to be able to host a website :

nano /etc/apache2/sites-available/yourvirtualhost.com.conf

See the example below and edit the relevent details.

<VirtualHost *:80>
        ServerAdmin [email protected]
        ServerName subdomain.domain.com
        ServerAlias subdomain.domain.com
        DocumentRoot /home/gameserver/public_html
        <Directory /home/gameserver/public_html>
                Options Indexes FollowSymLinks MultiViews
                AllowOverride All
                Require all granted
        </Directory>
        ErrorLog ${APACHE_LOG_DIR}/error.log
        # Possible values include: debug, info, notice, warn, error, crit, alert, emerg.
        LogLevel warn
        CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>

Enable your website by restarting Apache2

a2ensite yourvirtualhost.com.conf
service apache2 reload

Test the domain, to make sure it is working http://subdomain.domain.com/fastdl

Edit Game Server config

The new url will need to be added to the game server config

nano serverfiles/gamename/cfg/game-server.cfg

Make sure you have this:

sv_downloadurl "http://subdomain.domain.com/fastdl"
sv_allowdownload 1

Re-generate FastDL

If the custom server content is updated or removed re running the fastdl command is required to ensure that the webserver is in sync with the game server.

Note for addons developers : Note that clients won't download a file that they already downloaded unless you rename it.

Bzip2 Compression

Custom server content can be compressed using bzip2 which is supported by source games, allowing clients downloads will be faster. It is a must-have if you're hosting large files, as it will save you bandwidth, and speed up downloads for clients. However, using bzip2 on many small files can slow down client loading times.

Garry's Mod Download enforcer

In order for a client to download files from a FastDL in Garry's Mod, the developer of an addon must put files from the addon into lua code resource.Addfile ( "/path/to/file.ext" ). However, some addon developers do not do this. In order for clients to download the required files, an lua file needs to be generated for it to work, which is what the lua enforcer feature does. The only downside is that clients may download files that are not required on the server.

Authentication Token

Don't Starve Together server requires an Authentication Token.

1. Go to the Klei website https://accounts.klei.com.

2. After logging into your account visit this page to get your game server authentication token.

3. Enter a friendly name for your server and copy the access token and paste it into the file cluster_token.txt.

You can quickly do this by running the following command, replacing [AUTHTOKEN] with your authentication token.

echo '[AUTHTOKEN]' > ~/.klei/DoNotStarveTogether/[CLUSTER]/cluster_token.txt

Clusters and Shards

A Don't Starve Together server consists of clusters and shards.

One cluster can contain multiple shards. A shard is simply a map/level. Multiple shards are connected by cave entrances/exits found on the map. These are functioning as portals to allow players to travel between actual game servers.

Single-Shard

By default, the cluster will be single-sharded. So you only need one server but you will also only have one map.

Default start parameter setting:

sharding="false"

Multi-Shard

Take a look at Multiple-Servers to get a general idea of how to create multiple game servers.

There are two types of shards:

1. master shard: the shard you enter when joining the server / the shard/server you have to join (one per cluster)

2. slave shard: shard that will connect to the master (arbitrary number per cluster)

In this example, we will only use two shards, one overworld shard and one cave shard, on the same machine using the same installation. If you want to use more shards or run the shards on different machines, take a look at the guides mentioned at the bottom. First of all we need two scripts:

./dstserver-1
./dstserver-2

Server #1

dstserver-1 will be the master shard with an overworld as level.

## Predefined Parameters
sharding="true"
master="true"
shard="Master" 
cluster="Cluster_1"
cave="false"

~/.klei/DoNotStarveTogether/Cluster_1/Master/server.ini

[NETWORK]
server_port = 11000

[STEAM]
authentication_port = 8768
master_server_port = 27018

Server #2

dstserver-2 (this will be the slave shard with a cave as level):

## Predefined Parameters
sharding="true"
master="false"
shard="Caves" 
cluster="Cluster_1"
cave="true"

~/.klei/DoNotStarveTogether/Cluster_1/Caves/server.ini

[NETWORK]
server_port = 11001

[STEAM]
authentication_port = 8769
master_server_port = 27019

If you want to Caves and Overworld to display on the same server, you also to change the cluster.ini, otherwise it will run two instances, one with the Overworld and another with the Caves:

~/.klei/DoNotStarveTogether/Cluster_1/cluster.ini

[SHARD]
shard_enabled = true

Set all installation variables BEFORE running the ./dstserver-[1,2] install commands. Feel free to change these settings but make sure that you set them to the same clusters. You also should not change them afterwards.

For clarity it is recommended recommend naming the master shard Master.

Lastly you have to start both servers. The order does not matter because the slave server will auto-retry connecting to the master server which is listening.

Guides / Documentations:

• Quick Setup

• Server Settings

• Command Line Options

• Understanding Shards and Migration Portals

Summary

Most servers require a specific version of glibc installed. Newer distros normally have the required version. However the older the distro the less likely the server will run. Check the requirements below. If you have an older distro the game server may still run with a glibc fix.

Server Requirements

A complete list can be found here.

Distro glibc Versions

List of distros and there glibc version.

distrowatch.com is also a great source to find this information.

glibc version history available on Wikipedia.

External Links

• distrowatch.com

• glibc Homepage

jq allows LinuxGSM to filter json files to extract specific useful data.

In Linux, files and directories are owned by a user and a group (see File Ownership). On top of that, this user, group, and other ones (groups and users), have different permissions on these files. That's what we call file permissions. You might need to change them. If this can be boring to new users, remember that this is a huge part of what makes Linux as secured as it is, and you are required to know this if you wish to do anything serious with Linux.

Check current permissions

Check permissions from a file or all files of any directory

ls -al /path/to/file/or/dir

Sample output:

ultimatebyte@game:~$ ls -al twserver
-rwxr-x--- 1 ultimatebyte ultimatebyte 5691 Jan 30 01:14 twserver

Explaination:

• First character is a a - for files, or a d for directories

• Three next ones are owner permissions: rwx

• Three next ones are group permissions: rwx

• Three next ones are "others permissions: rwx for groups and users that are now owning the file

• First user listed is the owner

• Next entry is the group owning the file

"r" stands for "read", "w" stands for "write", "x" stands for execute. If any letter from rwx is showed as a -, it means that the permission is not granted.

Change permissions

Change permissions from files or directories

Command

chmod

Recursive syntax (include sub files and directories)

Append -R to your chmod

chmod -R

Syntax 1)

Set all permissions at once

chmod 777 == chmod -a+rwx chmod 000 == chmod -a-rwx

First number is for user, second is for group, third for others

Values

0 no permissions
1 x
2 w
3 wx
4 r
5 rx
6 rw
7 rwx

Example

Default permissions are 755. If you wish to prevent other users from interacting with your files, then 750 can be great.

chmod -R 750 /home/userdir

Syntax 2)

We used rwx for these, but of course, you should pick the permissions you wish to add or remove.

Permissions add

chmod +rwx filename Will add read, write, and execute permissions to this file anyone on the machine. r stands for "read", w for "write", and x for "execute"

Example : chmod +x filename Will make the file executable by anyone on the machine.

Permissions remove

chmod -rwx filename Will remove read, write, and execute permissions to this file anyone on the machine. Note : root user is the only exception.

Permissions for user/group/others/all

chmod -u+rwx chmod -g+rwx chmod -o+rwx chmod -a+rwx

Multiple permissions at once

chmod -u+r,g-w,o-rwx

Of course, you can replace +rwx by anything previously mentioned

Set GUID and GID

Advanced permissions management, you will likely not need this for game servers.

Set GUID

No GUID

chmod -R a-s /path/to/dir chmod -R 0xxx /path/to/dir

Example : chmod -R 0640 /home/user/website

Set UID

Files will run as the user

chmod -R u+s /path/to/dir/ chmod -R 2xxx /path/to/dir

Set GID

Any subdir and subfile will have the same group

chmod -R g+s /path/to/dir/ chmod -R 4xxx /path/to/dir

Set GUID

Set both UID and GID

chmod -R a+s /path/to/dir/ chmod -R 6xxx /path/to/dir

LinuxGSM supports the installation, updating, and removing of selected mods and add-ons for some games and engines. Zip add-ons are currently the only supported installations.

Commands

Install mods

./gameserver mods-install

./gameserver mi

Update mods

./gameserver mods-update

./gameserver mu

Remove mods

./gameserver mods-remove

./gameserver mr

Supported mods/add-ons

(This list was last updated on 2020-11-19)

Goldsrc Engine Games (v20.6.0+)

• Metamod

• AMX Mod X

Additional Game Specific AMX Mod X addons:

• Counter-Strike 1.6

• Day of Defeat

• Team Fortress Classic

• The Specialists

• Natural Selection

Source Engine Games

• Metamod: Source

• SourceMod

For Garry's Mod

• ACF

• ACF Missiles

• DarkRP

• DarkRP Modification

• PAC3

• UClip

• ULib

• ULX

• UTime

Unity3D Games

Rust, Hurtworld, 7 Days To Die

• Oxide Mod

Technical Details

Install

• All available mods are defined in the mods_list.sh.

• Mods hosted on github use the latest archive link available. Others are scraped through a mods download mirrors in order to find the latest version.

• If some mods are already installed, a list of installed mods shows up. If a user tries to install a mod that is already installed, there will be a warning that any custom files will be overwritten.

• A list of available mods is displayed to the user, including the developers website.

• After the user selects a mod, the file gets downloaded and extracted to a temporary directory.

• A list of the mod files is created at lgsm/mods/modname-files.txt. This list allows the mod to be removed if required. LinuxGSM developers have whitelisted important customisable files such as mod config files that will not be removed. If there are any important files that have been missed please raise an issue.

• Files and directories then get copied to the correct destination.

• LinuxGSM updates a file containing a list of installed mods lgsm/mods/installed-mods.txt.

Update

• The list lgsm/mods/installed-mods.txt is used to identify which mods are installed. If a non-referenced mod is found, the updater will stop with an error.

• Three update types are available

  • OVERWRITE will overwrite all mod files.

  • NOUPDATE will prevent this mod from being updated. Useful for a framework that is designed to be entirely customized.

  • RETAIN keeps the whitelisted files and updating everything else.

• As there is no easy way to check for mod versions, the update process will update every single installed mod every time the command is run.

• The process is pretty similar as the installation, mod gets downloaded, extracted, files get removed. Removed files go to a temp file list, then file list list built and temp file list added to it. Finaly the mod gets copied to destination using cp -Rf.

• If an admin wants to overwrite custom files, then he can either uninstall/reinstall the mod, or just install over it.

Remove

• A list of installed mods is displayed, user has to pick one to remove.

• Any file listed in lgsm/mods/modname-files.txt gets removed.

• The file list gets removed, as well as the entry in installed-mods.txt.

Adding mod support

What mods can be added

Any as long as the archive can be found online and the installation consists of extracting an archive to the serverfiles directory.

Asking to add support for a mod

If there is a mod you wish to see supported by LinuxGSM please raise a GitHub issue with any relevant info about the mod.

Developers

If you wish to create a pull-request yourself for this, please make sure you read the "Developer" section at the bottom right of the wiki.

Usually, editing mods_list.sh should be enough to add mod support. This script contains comments helping you to understand how to use it.

Basically: Add an array variable containing mod info, then add the array to the global array.

Long explanation: The list is based on arrays, used to define all mod properties. You need to make sure that every value is filled up and in the correct order, that mod commands are unique and that multiple choices values are ended with a semicolon (;), otherwise the last value will be ignored. You might need to add an entry in fn_mod_tidy_files_list from mods_core.sh in order to remove lines from mod's file list so that they do not get wrongly removed with the mods-remove command. For further assistance on developing this contact UltimateByte who developed those functions and dgibbs that reworked it should be able to help.

SFTP (Secure File Transfer Protocol) is the transfer protocol to view and transfer files over SSH. SFTP works the same as FTP but is encrypted.

SFTP Advantages

• Encrypted

• Nothing extra to install (such as FTP server)

• Works like any other FTP server

• Compatible with the popular clients such as Filezilla and WinSCP

• You can login to any SSH accessable Linux user.

How to use SFTP

• Connect like any FTP except it uses the port (default 22)

• Use your linux username / password

• You might need to set protocol to SFTP in your FTP client.

Bad practice to avoid

By all means, you should never

1. Connect to a server as root.

2. Use FTP if SFTP is available.

Root login to an FTP

Here is why you shouldn't

• By logging in as root, you might accidentally remove essential system files or put useless files into the wrong place and mess up with your system.

• But even more annoying, any file you'll write will belong to root, and the user won't be able to either read, change, or execute writtent files as root.

• FTP is an unencrypted protocol, therefore it is very unsecure to edit sensitive files using it.

How to operate without root FTP login ?

• If you need to edit system config files, then do like everyone else : use an SSH text editor like "nano" or "vi".

• Set your FTP so that you can login as users with a valid shell from the machine. Eventually, disable root FTP login.

• Oh, one more thing... Did we talk about SFTP ?

Server Files

LinuxGSM uses the most recent version of UT2K4 server available for Linux.

v3369.3

This includes the various map packs such as the UT2004 Mega Pack.

Complete list of maps available with the LinuxGSM installer

AS-BP2-Acatana.ut2           CTF-Avaris.ut2               CTF-Smote.ut2                DM-CBP1-Elegance.ut2         DM-DE-Ironic.ut2             DM-UCMP-PleasantValley.ut2   DOM-ScorchedEarth.ut2
AS-BP2-Jumpship.ut2          CTF-BP2-Concentrate.ut2      CTF-TwinTombs.ut2            DM-CBP1-Emperor.ut2          DM-DE-Osiris2.ut2            DM-UCMP-RancidMetal.ut2      DOM-SepukkuGorge.ut2
AS-BP2-Outback.ut2           CTF-BP2-Pistola.ut2          CTF-UCMP-Aithanarid.ut2      DM-CBP1-Finale.ut2           DM-Deck17.ut2                DM-UCMP-ThePits.ut2          DOM-Suntemple.ut2
AS-BP2-SubRosa.ut2           CTF-BridgeOfFate.ut2         CTF-UCMP-Aquatica.ut2        DM-CBP1-GoldenDawn.ut2       DM-DesertIsle.ut2            DM-UCMP-Xanadu.ut2           DOM-UCMP-Cerebral.ut2
AS-BP2-Thrust.ut2            CTF-CBP1-Betrayal.ut2        CTF-UCMP-DecaneCaldera.ut2   DM-CBP1-Neandertalus.ut2     DM-Flux2.ut2                 DM-UCMP2-Adamantium.ut2      DOM-UCMP2-1on1-Smelter.ut2
AS-CBP2-Thrust.ut2           CTF-CBP1-Concentrate.ut2     CTF-UCMP2-Campgrounds.ut2    DM-CBP1-Ougaldwin.ut2        DM-Forbidden.ut2             DM-UCMP2-Churn.ut2           DOM-UCMP2-Meskhenet.ut2
AS-Confexia.ut2              CTF-CBP1-Ferris.ut2          CTF-UCMP2-Enlightenment.ut2  DM-CBP1-Shifter.ut2          DM-Gael.ut2                  DM-UCMP2-Dynarak.ut2         Entry.ut2
AS-Convoy.ut2                CTF-CBP1-TechDream.ut2       CTF-UCMP2-Orcus.ut2          DM-CBP2-Achilles.ut2         DM-Gestalt.ut2               DM-UCMP2-Hieron.ut2          ONS-Adara.ut2
AS-FallenCity.ut2            CTF-CBP2-Bahera.ut2          CTF-UCMP2-RottenCity.ut2     DM-CBP2-Archipelago.ut2      DM-Goliath.ut2               DM-UCMP2-Saiko.ut2           ONS-ArcticStronghold.ut2
AS-Glacier.ut2               CTF-CBP2-Botanic.ut2         CTF-UCMP2-Sublimity.ut2      DM-CBP2-Azures.ut2           DM-HyperBlast2.ut2           DM-UCMP2-Taron.ut2           ONS-Aridoom.ut2
AS-Junkyard.ut2              CTF-CBP2-Decadence.ut2       CTF-UCMP2-Vadamerca.ut2      DM-CBP2-Buliwyf.ut2          DM-Icetomb.ut2               DM-UCMP2-Thebes.ut2          ONS-Ascendancy.ut2
AS-MotherShip.ut2            CTF-CBP2-Deep.ut2            CTF-UCMP3-Tidal.ut2          DM-CBP2-Drakonis.ut2         DM-Inferno.ut2               DM-UCMP3-Altitude.ut2        ONS-CBP2-Argento.ut2
AS-RobotFactory.ut2          CTF-CBP2-Gazpacho.ut2        CTF-UCMP4-Talya.ut2          DM-CBP2-Griffin.ut2          DM-Injector.ut2              DM-UCMP3-Gantham.ut2         ONS-CBP2-Brassed.ut2
AS-UCMP2-Cruciatus.ut2       CTF-CBP2-Pistola.ut2         CTF-UCMP4-Virility.ut2       DM-CBP2-Kadath.ut2           DM-Insidious.ut2             DM-UCMP3-Glorian.ut2         ONS-CBP2-Mirage.ut2
AS-UCMP3-IslandStrike.ut2    CTF-CBP2-Skorbut.ut2         DM-1on1-Albatross.ut2        DM-CBP2-Kerosene.ut2         DM-IronDeity.ut2             DM-UCMP3-Sympathy.ut2        ONS-CBP2-Pasargadae.ut2
BR-Anubis.ut2                CTF-Chrome.ut2               DM-1on1-Crash.ut2            DM-CBP2-Khrono.ut2           DM-Junkyard.ut2              DM-UCMP4-Elucidation.ut2     ONS-CBP2-Tropica.ut2
BR-Bifrost.ut2               CTF-Citadel.ut2              DM-1on1-Desolation.ut2       DM-CBP2-KillbillyBarn.ut2    DM-Leviathan.ut2             DM-UCMP4-Mania.ut2           ONS-CBP2-Valarna.ut2
BR-BridgeOfFate.ut2          CTF-Colossus.ut2             DM-1on1-Idoma.ut2            DM-CBP2-Koma.ut2             DM-Metallurgy.ut2            DM-UCMP4-Propaganda.ut2      ONS-CBP2-Yorda.ut2
BR-CBP1-BreakLimit2004.ut2   CTF-DE-ElecFields.ut2        DM-1on1-Irondust.ut2         DM-CBP2-KroujKran.ut2        DM-Morpheus3.ut2             DM-UCMP4-Speos.ut2           ONS-Crossfire.ut2
BR-CBP2-Aquarius.ut2         CTF-DE-LavaGiant2.ut2        DM-1on1-Mixer.ut2            DM-CBP2-Masurao.ut2          DM-Oceanic.ut2               DOM-Access.ut2               ONS-Dawn.ut2
BR-CBP2-Bahera.ut2           CTF-December.ut2             DM-1on1-Roughinery.ut2       DM-CBP2-Meitak.ut2           DM-Phobos2.ut2               DOM-Aswan.ut2                ONS-Dria.ut2
BR-Canyon.ut2                CTF-DoubleDammage.ut2        DM-1on1-Serpentine.ut2       DM-CBP2-Niflheim.ut2         DM-Plunge.ut2                DOM-Atlantis.ut2             ONS-FrostBite.ut2
BR-Colossus.ut2              CTF-Face3.ut2                DM-1on1-Spirit.ut2           DM-CBP2-Reconstruct.ut2      DM-Rankin.ut2                DOM-CBP1-Aphrodite.ut2       ONS-Icarus.ut2
BR-DE-ElecFields.ut2         CTF-FaceClassic.ut2          DM-1on1-Squader.ut2          DM-CBP2-Summit.ut2           DM-Rrajigar.ut2              DOM-CBP1-Hathor.ut2          ONS-IslandHop.ut2
BR-Disclosure.ut2            CTF-Geothermal.ut2           DM-1on1-Trite.ut2            DM-CBP2-TelMecoMEX.ut2       DM-Rustatorium.ut2           DOM-CBP1-Verde.ut2           ONS-Primeval.ut2
BR-IceFields.ut2             CTF-Grassyknoll.ut2          DM-Antalus.ut2               DM-CBP2-Tempest.ut2          DM-Sulphur.ut2               DOM-CBP2-Gerroid.ut2         ONS-RedPlanet.ut2
BR-Serenity.ut2              CTF-Grendelkeep.ut2          DM-Asbestos.ut2              DM-CBP2-TensileSteel.ut2     DM-TheDeck2004.ut2           DOM-CBP2-Summit.ut2          ONS-Severance.ut2
BR-Skyline.ut2               CTF-January.ut2              DM-BP2-Calandras.ut2         DM-CBP2-Torkenstein.ut2      DM-TokaraForest.ut2          DOM-Conduit.ut2              ONS-Torlan.ut2
BR-Slaughterhouse.ut2        CTF-Lostfaith.ut2            DM-BP2-GoopGod.ut2           DM-CBP2-Tydal.ut2            DM-TrainingDay.ut2           DOM-Core.ut2                 ONS-Tricky.ut2
BR-TwinTombs.ut2             CTF-Magma.ut2                DM-CBP1-Arkanos.ut2          DM-Compressed.ut2            DM-UCMP-1on1-Derelict.ut2    DOM-Junkyard.ut2             ONS-UCMP-ABC-ECE.ut2
BR-UCMP2-Sublimity.ut2       CTF-Maul.ut2                 DM-CBP1-AugustNoon.ut2       DM-Corrugation.ut2           DM-UCMP-BloodRun.ut2         DOM-OutRigger.ut2            ONS-UCMP-ABC.ut2
CTF-1on1-Joust.ut2           CTF-MoonDragon.ut2           DM-CBP1-BlackJackal.ut2      DM-Curse4.ut2                DM-UCMP-Contrast.ut2         DOM-Renascent.ut2            ONS-Urban.ut2
CTF-AbsoluteZero.ut2         CTF-Orbital2.ut2             DM-CBP1-Downgrave.ut2        DM-DE-Grendelkeep.ut2        DM-UCMP-ImMortalis.ut2       DOM-Ruination.ut2            VCTF-UCMP2-RiverCanyon2.ut2

Server Files

Unreal Tournament 99 Requires a few alterations from the official server download. Because of this, the LinuxGSM version of the server files includes the following.

• OldUnreal-UTPatch469a-Linux.tar.bz2 (OldUnreal Patch)

• ut-server-436.tar (Latest Official Version)

• UTBonusPack.zip

• UTBonusPack2.zip (maps only)

• UTInoxxPack.zip

• UTBonusPack4.zip

Server Resources

UT99.org is a community website for UT99

OldUnreal is another community website

Config File Settings

With a default LinuxGSM Install, server settings can be configured in this file:

/home/user/serverfiles/System/ut99server.ini

You can change most of these settings in a browser by enabling the webserver and putting in settings there.

[Engine.GameReplicationInfo]
ServerName= 
ShortName=
AdminName=
AdminEmail=
Region=0
MOTDLine1=
MOTDLine2=
MOTDLine3=
MOTDLine4= 

[Botpack.ChallengeBotInfo]
Difficulty=4

[Botpack.DeathMatchPlus]
bNoviceMode=True
bHardCoreMode=True
bUseTranslocator=False
bCoopWeaponMode=False
MinPlayers=10
AirControl=0.350000
FragLimit=30
TimeLimit=0
bChangeLevels=True
bMegaSpeed=False
bAltScoring=False
bMultiWeaponStay=True
bForceRespawn=False
bTournament=False
NetWait=10
RestartWait=15
MaxCommanders=0
InitialBots=9
bNoMonsters=True
bHumansOnly=False
bClassicDeathMessages=False
MinFOV=80.000000
MaxFOV=130.000000
MaxNameChanges=0

[UWeb.WebServer]
Applications[0]=UTServerAdmin.UTServerAdmin
ApplicationPaths[0]=/ServerAdmin
Applications[1]=UTServerAdmin.UTImageServer
ApplicationPaths[1]=/images
DefaultApplication=0
ListenPort=8076
bEnabled=True

[UTServerAdmin.UTServerAdmin]
AdminUsername=
AdminPassword=

Slack is a cloud-based set of proprietary team collaboration software tools and online services.

Create a Slack Webhook

A webhook is required to post alerts to a slack.

1. Follow slack's guide to setting up an incoming webhook.

2. Copy the Webhook URL

3. Turn on slack alerts and enter the URL in to the LinuxGSM settings. (~/lgsm/config-lgsm/<gameserver>/common.cfg)

# Slack Alerts | https://docs.linuxgsm.com/alerts/slack
slackalert="on"
slackwebhook="your webhook url"

LinuxGSM uses tmux to run servers in the background so the server instance is not terminated when you close a terminal session.

Tmux is a key component of LinuxGSM and replaced screen which was used on earlier versions. tmux has a few improvements over screen; mainly being better at handling standard Linux users, this was a major issue when developing with screen. tmux allows LinuxGSM to call up a game server running in the background so you can see what it is doing; this feature is available with console feature.

tmuxception

Some server admins have attempted to run LinuxGSM within a tmux or screen session. As LinuxGSM calls tmux it is not possible to run LinuxGSM within a tmux or screen session.

Known Issues

Tmux 1.8

tmux 1.8 has an issue that prevents console logging from working. This is because the pipe-pane feature is broken in tmux 1.8 causing it not to output the console to the console log files. The only solution is to use another version of tmux.

create session failed: Operation not permitted

This issue normally occuires with CentOS and is caused by the standard user not having permissions to user /dev/ptmx.

create session failed: ./srcds_linux -game csgo: Operation not permitted

To fix this the user needs to be part of the tty group.

usermod -G tty csgoserver

To confirm the user has been added check /etc/group.

grep tty /etc/group

tty:x:5:csgoserver

Upgrade tmux CentOS 7 using Ghettoforge

If the default version of tmux (1.8) installed on CentOS 7 it will fail to log the console output. To fix this it is possible to upgrade to a newer version of tmux using the Ghettoforge repository.

Install Ghettoforge with the following command.

yum install http://mirror.ghettoforge.org/distributions/gf/gf-release-latest.gf.el7.noarch.rpm

Install tmux using the Ghettoforge repo.

yum --enablerepo=gf-plus install tmux

Once installed restart the server to complete the upgrade.

restart

Ports are communication endpoints for an application. A port will either listen to or transmit network traffic on specific ports.

There are port standards set by IANA for common protocols such as HTTP (port 80), SSH (port 22), SMTP (port 25), etc. Game servers tend to use standard ports depending on the game engine. For example source engine games by default use port 27015 as the port it listens on.

Vocabulary

• Port listening is what a service like a game server does in order to receive packets from incoming connections: by listening to a port, the program waits for incoming packets on a given port.

• Port opening happens on a firewall, it consists of allowing traffic to a port.

• Port redirection is part of NAT and happens on a router or firewall. It consists of forwarding incoming traffic on a given port to a specific local IP.

• Network Address Translation (NAT) is a method of remapping an IP address into another by modifying information.

Game Server Ports

Game Servers typically have ports for the following functions.

Game port: The port that players connect to. Query port: Used by software to gather information from the server such as server name, map, and number of players. Rcon port: Some game servers have remote console port allowing remote administration of a game server. Web port: used for game servers that have web interface.

Depending upon which game server is being used, you can set game server ports within your or config file.

LinuxGSM allows you to see the ports your game server is using with the ./gameserver details command.

Changing Default Ports

Default ports are set in either the or .

You can use ./gameserver details to find out where to edit port settings

To alter them you will need to edit the file using nano.

Example: for source games, you need to alter the following:

Which ports can be used?

You can use any port as long as it is not already in use and it is up to you to set up port allocation. It is recommended that ports are close together and sequential i.e. 27015, 27016, 27017 to save confusion. Some server's ports by default are not sequential, however, there is nothing stopping you from changing this. For example for source engine game servers; you could set port 27015, source TV port 27016, client port 27018. The next game server instance could simply follow on from this.

Multiple IP addresses

Should a server have multiple dedicated IP addresses allocated, it is possible for game servers to have the same ports but bound to different IP addresses. Admins will need to set the specific IP address in the LinuxGSM config or game config.

Port Allocation Scheme

Each type of server has a default set of ports. This is fine to use if only one server is being set up. However, if multiple servers are being used a port scheme needs to be considered. There is no requirement to stick to specific ports but it is recommended they are in a logical order.

Source Default Ports

Incremental (recommended)

You can allocate ports incrementally, one after the other. With each server following on from the last.

This scheme is the simplest option to avoid confusion when managing ports. Plus this is the most efficient scheme for reducing unused ports.

Standard Port Increment

This method increments each type of port keeping the scheme closer to the default. It is not as efficient but keeps ports more "standard".

Then increment those ports by 1 for every new server. 25 servers are using 75 ports. After making 25 servers, if you need more it is a good idea to add +100 to this 27000 range.

Separate IP Addresses

You can get new IP addresses for your dedicated server, and assign each server a new IP. This scheme is quite inefficient.

Track your ports

If you are running several game servers it is a good idea to create a spreadsheet of the ports you have used. Allowing you to keep track of what you have already used.

Diagnosing server accessibility

Check ports are bound

Ensure the game server ports are bound and listening before anything else. You can check if your server is actually listening by using ./gameserver details if a port is bound and listening then the LISTEN column will not be zero.

Running the ss command will bring up any ports that are listening. If not, the game server has not started or not correctly binding to its allocated ports.

• Check that ports are not already in use by another application.

• Check that you are trying to listen to an actual interface IP.

• Check that the server does not crash upon start by checking console logs or try starting the server with ./gameserver debug

Check the Firewall

are a regular source of connectivity issues. When diagnosing connection issues temporarily disabling a firewall will help identify if it is the source of the problem.

Check Port Forwarding (Local Networks)

Ensure that the router correctly redirects incoming traffic to the correct ports and local IP displayed with ./gameserver details with the correct protocol (TCP and/or UDP).

Depending upon the configuration of your server you may need to be more aware of its IP address configuration and how it relates to your game server.

Network Locations

Your game server can be hosted online using a server provider such as Linode or on a at home for either local-only LAN parties or allowing online players in through your router.

Internet (Public)

If your server is hosted on the internet using a server provider you should have been allocated a public internet IP address that will be accessible by everyone on the internet.

Local Networks (Private)

Using a home server or virtual machine on your desktop is a great way to get started with LinuxGSM. However, a local network (LAN) may require a better understanding of networking equipment, how local IP addressing works, and technologies such as and .

When a server is hosted on a local network it will be given a private IP address that is only accessible to other devices on your local network. This is fine if you want to get friends around host a game server for a good old-fashioned LAN party. But if you want to allow online players access to your local game server you will need to configure your home router's firewall and setup port forwarding using NAT.

Network Interfaces

All computers will have some sort of physical or virtual (ethernet, fiber optic, wi-fi) to connect to a network. On Linux, you can see your server's interfaces by using the following command.

Typically you may see (depending on distro) a localhost loopback interface and an eth0 interface. The eth0 (Ethernet) is used for your standard copper network cable and is what you will likely see. If you have multiple interfaces you may also see eth1, eth2, etc. More advanced setups can choose to bond together interfaces to work as one to increase bandwidth and resilience.

IP Address

An IP (Internet Protocol) address is a numerical label assigned to each device connected to a computer network that uses the Internet Protocol for communication. It serves two primary functions: host or network interface identification and location addressing. IP addresses enable devices to send and receive data within a network, facilitating communication and data transfer across the Internet.

1. LAN IP Address:

   • Example: 192.168.1.10

   • Explanation: In a typical home or office network, devices are often assigned private IP addresses within the range defined by the Internet Engineering Task Force (IETF) for private networks. The "192.168.1.10" address is an example of a private IP address commonly used within a LAN. Each device on the local network would have a unique private IP address for internal communication.

2. Internet IP Address:

   • Example: 203.0.113.45

   • Explanation: Internet IP addresses, also known as public IP addresses, are assigned by Internet Service Providers (ISPs) and are globally unique. The "203.0.113.45" address is an example of a public IP address. Websites, servers, and other devices connected to the Internet have public IP addresses that are used for communication between different networks on a global scale. These addresses are essential for routing data across the Internet.

Virtual Private Networks

Some servers may be connected to a VPN (Virtual Private Network) using software such as Wireguard or OpenVPN. This normally creates its own interface that gets allocated an IP address. It is possible to use a VPN to create a private connection to a LAN server

Tunneling

A relatively new technology is starting be become popular that allows applications hosted (think self-hosted web applications) on a private network to be accessed on the internet via a network "tunnel". This typically involves running a tunnel client in the private network that points to a specific internal IP and port. This bypasses the need to port forward on a router. Currently, there is a service called that is specifically designed for game servers. However other solutions may work.

IP Address Allocation

Each network interface can be allocated an IP address either manually on the server or via DHCP. If you are using a provider an internet IP address is normally automatically allocated to your server. For a local network, your router DHCP server will allocate a local IP address. A local IP address can be reserved using DHCP or you can manually set an IP on the server.

Game Servers will typically bind (attach a network socket) to all available IP addresses making the game server available on all networks. However, sometimes a particular IP address may need to be specified if you only want a particular network to access it or the game server requires it.

Single Server IP Address

The simplest and most common server configuration will have one network interface and thus one IP address. When your game server starts it will simply listen and bind to this IP address.

Multiple Server IP Addresses

Some servers will have multiple network interfaces available, allowing for multiple IP addresses to be assigned to your server. In this configuration, a server might listen and bind itself to all IP addresses or just one (depending on the game server).

Multihome

If you have multiple interfaces you may choose to multihome your server. This simply means each interface is on a different network. For example, eth0 is on the 192.168.0.0 network and eth1 is on the 192.168.1.0 network and wg0 (WireGuard VPN) is attached to 10.0.0.0. While it is unlikely there is a specific use case for game servers to use multiple networks you need to be aware of what IP addresses your server is bound to.

0.0.0.0

The 0.0.0.0 IP is a meta-address means non-specific or all addresses. When you set up a game server you may notice the IP address 0.0.0.0 in command line parameters and settings. It is the default IP for game servers just signifies that the game server can bind to all available server IP addresses.

Many Steam games support the . It is an easy way to share community game modes, maps, skins, and other community-made content.

For game servers, the Workshop allows community content (mainly maps and game modes) to be made available to play on game servers. The Workshop content is automatically downloaded by the game client of the player connecting to the server. This removed the need to set up a server.

LinuxGSM adds workshop pre-configuration to game server scripts when available.

Supported Games Servers

This is a list of game servers that are known to support Workshop

• Ark: Survival Evolved

• ARMA 3

• Day of Infamy

• Counter-Strike 2

• Garrys Mod

• Hurtworld

• Insurgency: Sandstorm

• Killing Floor 2

• Natural Selection 2

• Starbound

Steam Web API Key/Auth Key

Some game servers require a Steam API key to access Workshop content. To get this key visit the and follow the instructions.

Items and Collections

The Steam Workshop is made up of individual items such as maps, game modes, skins, etc, and also collections of these items. Game servers can download these items and collections by getting their unique ID number and adding it to the game server config or parameter. For collections, it is possible to find and use an existing one or create your own.

Get an Item or Collection ID

To get and item or collection ID browse to the item you want to add and look at the URL; it will contain the required ID number. In the example below the ID is 3075706807.

Create a Collection

Creating a collection is a great way to manage and group all the content that you want on your game server.

To create your collection go to the collections section of your games Workshop, and select Create Collection.

Fill out the form.

Add any maps to the collection, then publish the completed collection. Then get the collection ID which can be found on the page URL. The collection ID in the url below is 157384458.

Server Configurations

Introduction

Linux files and directories always belong to a user and group. That is what we call ownership. If this can be boring to new users, remember that this is a huge part of what makes Linux as secure as it is.

Check current ownership

Check ownership in the current directory:

ls -l

Example output:

Syntax of the output is:

• d for directory or - for file

• user, then group, then others permissions

• number specifies the number of links or directories inside of a directory

• The user that owns the file, or directory

• The group that file or directory belongs to

• The size in bytes

• The date of last modification

• The name of the file

Check ownership from all files and hidden files of any directory

ls -al /path/to/file/or/dir

Sample output:

All these commands require elevated privileges!

Change owner

Change owner from files or directories

Command

chown

As usual, chown --help will provide you with all available arguments

Single file syntax

chown newowner /path/to/file/or/directory

Recursive syntax (include sub files and directories)

chown -R newowner /path/to/directory

Example

chown -R myuser /home/myuser

Group ownership

Change group ownership on files or directories

Command

chgrp

As usual, chgrp --help will provide you with all available arguments

Single file syntax

chgrp newgroup /path/to/dir/or/file

Recursive syntax (include sub files and directories)

chgrp -R newgroup /path/to/dir/

User and group ownership

Change user and/or ownership for files and directories at the same time

Command

chown

As usual, chown --help will provide you with all available arguments

Single file command

chown user:group /path/to/dir/or/file

Recursive

chown -R user:group /path/to/dir

Example:

chown -R myuser:myuser /home/myuser

Call of Duty 4 Server Files

Many tutorials state that the game disk is required to install a CoD4 server. This is because the server is built into the client. This made it difficult to distribute and create a CoD4 server.

After investigating this issue, it was found that it is possible to run a server with most of the client files removed. This greatly reduces the file size and prevents the client from being used. Because of this LinuxGSM provides a download to only the files required to run the server. Preventing the use of the client, removing the opportunity to use the server to pirate the game.

CoD4x

cod4server uses CoD4x project for its server, rather than the original, as it fixes various bugs and adds a few features over the vanilla server.

https://cod4x.ovh

Updating CoD4x

CoD4x has its own update functionality. It will automatically check for updates and does not require LinuxGSM to check for updates.

CoD4x Master Server

CoD4x game servers (since version 17.6) require a server token to be listed on the CoD4x master server.

To generate a token visit here.

Once a token is generated add it to the sv_authtoken cvar in server.cfg or command-line parameters.

server.cfg

set sv_authtoken "mytokenhere"`

command-line parameters

+set sv_authtoken "mytokenhere"

The server then needs to be restarted to allow the game server to be listed.

CoD4x master server list

Mod Support

Mods for Call of Duty 4 have to be manually added to the game server.

Adding Mods

To run a mod the servers fs_game variable must be set correctly. Mods reside in the mods folder inside fs_homepath. Example directory tree:

mods/                                  
     ├── pml220                         
     │   ├── mod.ff                         
     │   ├── pml220.iwd                     
     │   ├── z_c_r.iwd

To start the server with a mod set the fs_game variable accordingly.

parms="+set sv_punkbuster 0 +set fs_basepath ${serverfiles} +set dedicated 1 +set net_ip ${ip} +set net_port ${port} +set sv_maxclients ${maxplayers} +exec ${servercfg} +map ${defaultmap} +set fs_game "mods/pml220""

Custom Maps

Modded CoD4 servers have the ability to run with user-created maps. To run a server with a custom map, it has to first be placed in the usermaps directory (if missing simply create it yourself).

    ├── usermaps
    │   ├── mp_nuketown
    │   │   ├── mp_nuketown.ff
    │   │   ├── mp_nuketown.iwd
    │   │   ├── mp_nuketown_load.ff

Typically, maps are prefixed by mp_ following the maps name.

Running custom maps on unmodded servers

Running custom maps on unmodded servers is not supported, but there is a neat workaround to still load custom maps. First, create a mods folder and some empty folder inside it.

    ├── mods
    │   ├── myemptymod

Now set fs_game to mods/myemptymod and you will be able to run custom maps.

Fast Download

Fast download is possible with CoD4 to allow custom maps and mods to be hosted on a webserver.

set sv_allowDownload "1" // allow clients to download gamefiles
set sv_wwwDownload "1" // enable download redirection
set sv_wwwBaseURL "http://domain.tld/cod4fastdl/" // defines url to download from
set sv_wwwDlDisconnected "0" // disconnect clients while downloading

here sv_wwwBaseURL has to point to a URL served by your web server.

An example directory tree for a served folder may look as below:

    cod4fastdl/
    ├── mods
    │   ├── pml220
    │   │   ├── mod.ff
    │   │   ├── pml220.iwd
    │   │   ├── z_c_r.iwd
    ├── usermaps
    │   ├── mp_nuketown
    │   │   ├── mp_nuketown.ff
    │   │   ├── mp_nuketown.iwd
    │   │   ├── mp_nuketown_load.ff

The backup command allows the creation of .tar.gz archives of a game server. This can be used to transfer a game server to another Linux server, to backup the game server before a risky change, to save the current state of the game server.

Commands

Standard: ./gameserver backup

Short: ./gameserver b

Example Output

mumbleserver@game:~$ ./mumbleserver b
[ INFO ] Backup mumble-server: A total of 34M will be compressed into the following backup:
/home/mumbleserver/backups/mumble-server-2016-10-28-194346.tar.gz
Warning! mumble-server will be stopped during the backup.
[  OK  ] Stopping mumble-server: Mumble Port 64738
[  OK  ] Backup mumble-server: Backup created: mumble-server-2016-10-28-194346.tar.gz is 36M size

Backup Settings

Alter these three settings by editing LinuxGSM config.

maxbackups

Set the maximum number of backups with maxbackups. If the number of backups exceeds this value, the oldest backup will be removed after a successful backup.

maxbackups="4"

maxbackupdays

Set the maximum age of a backup using maxbackupdays. Any backups older than X days will be removed after a successful backup.

maxbackupdays="30"

stoponbackup

Set if the server should be stopped for a backup using stoponbackup. If the server is running it will be stopped while the backup is running and started again once complete. This is useful to prevent any file changes during compression that could result in a corrupt or failed backup.

stoponbackup="on"

Automated Backups

Automated backups can be set using cronjobs. It is recommended that frequently you backup and your retention policy to prevent your server is carefully considered to prevent storage issues.

cronjob example

see cronjobs

crontab -e

0 5 * * *  /home/username/gameserver backup > /dev/null 2>&1

Backups Location

By default backups are saved in the backup directory.

├── home
├── csgoserver
    ├── ** backup **       
    ├── lgsm
    ├── log       
    ├── serverfiles

You can change this using the configuration file and the property backupdir.

backupdir="${lgsmdir}/backup"

Checking Backups

Use ./gameserver details to view information about created backups.

Backups
===============================================================================
No. of backups:    1
Latest backup:
    date:          Fri Jan 23 15:54:52 CET 2015
    file:          /home/csgoserver/backups/csgo-server-2015-01-23-155447.tar.gz
    size:          1.6G

Disk Usage
===============================================================================
Disk available:  5.4G
Serverfiles:     1.6G
Backups:         6.2G

Alternative Backup Methods

Using the backup feature is not the only way to backup a game server. There are other methods that have more features are are more powerful than the basic LinuxGSM backup feature. Below are are few applications that can be used instead of, or with LinuxGSM backups.

rsync

rsync is one of the most common ways to backup. It is a remote sync tool that is created for sending files/directory's to another location. Particularly good for syncing to another server.

Duplicity

Is an incremental backup solution that allows backups to all sorts of different locations including many different cloud storage solutions like BackBlaze B2 and Amazon S3. Once configured it can be a powerful and efficient backup solution.

duplicity-backup.sh

duplicity-backup.sh is a very useful bash wrapper to help automate duplicity.

rclone

rclone is similar to rsync however can easily sync to cloud storage solutions.

Telegram is an instant messaging app that provides a powerful API that enables applications to send messages through bots. LinuxGSM leverages the Telegram Bot API to dispatch alerts to users, enhancing monitoring and management of gaming servers.

Creating a Telegram Bot

1. Initiate Bot Creation: Chat with @BotFather on Telegram to start creating your bot. Begin the conversation by clicking "Start".

2. Register Your Bot: Send /newbot to @BotFather and follow the provided instructions to set up your bot. Upon completion, you will receive an API token.
3. Configure LinuxGSM: Fill in the API token into your LinuxGSM config as follows:

   Copy

   # Telegram Alerts | https://docs.linuxgsm.com/alerts/telegram
   telegramapi="api.telegram.org"
   telegramalert="on"  # Enable alerts by changing "off" to "on"
   telegramtoken="XXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX" # Replace with your bot token
   telegramchatid=""
   telegramthreadid=""
   telegramsilentnotification="false" # Set to "true" to disable notification sounds and send alerts silently
   curlcustomstring=""  # Optional: For proxies, etc.

Configuring Alerts for a Group

New Group Creation

1. Select New Group within Telegram.

2. Name your group.

3. Add your bot by searching its @Username.

Adding to an Existing Group

1. Open group info.

2. Choose to add members.

3. Search and select your bot by its @Username.

Retrieving Your Telegram Chat ID

1. Activate Your Bot: Interact with your bot in Telegram.

2. Form the getUpdates URL: Replace the placeholder with your bot's token in https://api.telegram.org/botXXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/getUpdates.

3. Visit the URL: Use a web browser to access the URL.

4. Locate the Chat ID: In the JSON response, find the id field under the chat object.

   Copy

   "chat": {
       "id": 123456789,
       "first_name": "Your Name",
       "username": "YourUsername",
       "type": "private"
   }

   Note: The Chat ID for private chats is a positive number and for a group, it's a negative number.

5. Update LinuxGSM Config: Place your Chat ID in the LinuxGSM config file.

   Copy

   # Telegram Alerts | https://docs.linuxgsm.com/alerts/telegram
   telegramapi="api.telegram.org"
   telegramalert="on"
   telegramtoken="XXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
   telegramchatid="123456789" # Fill in your chat ID
   telegramthreadid=""
   telegramsilentnotification="false"
   curlcustomstring=""

Enabling Telegram Topics (Threads)

1. Verify that Topics are enabled for your group by checking the group's settings.

2. If you don't already have a topic created. Create a new Topic by clicking the three dots in the top right corner of the group chat and selecting New Topic.

3. Send a message in the Topic you want to use.

4. Repeat Retrieving Your Telegram Chat ID to retrieve the thread ID by looking for the message_thread_id field in the message object.

   Copy

   {
       "update_id": 123456,
       "message": {
           "message_id": 123,
           "from": {
               "id": 12345,
               "is_bot": false,
               "first_name": "Sender",
               "username": "SenderUsername",
               "language_code": "en"
           },
           "chat": {
               "id": -123456789,
               "first_name": "Your Name",
               "username": "YourUsername",
               "type": "supergroup"
           },
           "date": 1709691014,
           "message_thread_id": 11, // Use this number as your telegramthreadid
           "forum_topic_created": {
               "name": "LinuxGSM",
               "icon_color": 12345
           },
           "is_topic_message": true
       }
   }

5. Update the telegramthreadid field in the LinuxGSM config with the thread ID.

   Copy

   # Telegram Alerts | https://docs.linuxgsm.com/alerts/telegram
   telegramapi="api.telegram.org"
   telegramalert="on"
   telegramtoken="XXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
   telegramchatid="123456789"
   telegramthreadid="5" # Fill	in your thread ID
   telegramsilentnotification="false"
   curlcustomstring=""

Testing the Configuration

Execute a test alert with ./gameserver test-alert to verify the setup.

If you receive an alert on Telegram in the right place (group or private chat), the configuration is correct.

Advanced Configuration: Custom cURL String

For specific needs such as bypassing network restrictions, you can specify custom cURL arguments in the configuration.

    # Telegram Alerts | https://docs.linuxgsm.com/alerts/telegram
    # You can add a custom cURL string eg proxy (useful in Russia) in "curlcustomstring".
    # For example "--socks5 ipaddr:port" for socks5 proxy see more in "curl --help all".
    telegramapi="api.telegram.org"
    telegramalert="on"
    telegramtoken="XXXXXXXXX:XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
    telegramchatid="123456789"
    telegramthreadid="5"
    telegramsilentnotification="false"
    curlcustomstring="--socks5 ipaddr:port" # Fill in your custom cURL string
    ```

SteamCMD is a command-line based Steam client developed by Valve that is used to remotely download game files. This is very useful for game servers, as it is significantly easier to keep them up-to-date. Any game that supports dedicated servers will have its server files available on SteamCMD. All you need is the AppID which can be found on Valve's wiki or SteamDB.

SteamCMD Login

SteamCMD requires a login to download some game servers.

It is recommended that you create a new Steam username just for the server.

Anonymous Login

The majority of game servers using SteamCMD only require an anonymous login. LinuxGSM will not require any configuration if this is the case.

Steam User Login

Some game servers require you to login to SteamCMD using a steam login to allow download of the server. Some also require you to own a copy of the game on the steam account.

If this is the case LinuxGSM will prompt you on installation to set a steam username and password. This can be set by editing the following settings within the LinuxGSM config.

## SteamCMD Login
steamuser="username"
steampass="password"

If you get the error ERROR! Failed to install app '2430930' (No subscription) then you do not own a copy of the game in your account and will need to login on the standard steam client and buy the game. If the game is free you will need to "add to account".

Plain Text Passwords

SteamCMD prints out passwords in plain text meaning that the Steam login password is visible to anyone on the server. LinuxGSM saves logs and the Steam login password will be view-able in the logs.

Steam Guard

Steam Guard is an additional layer of security that can be applied to a Steam account. The first layer is the account login credentials: the Steam account username and password. With Steam Guard, a second layer of security is applied to the account, making it harder for a Steam account to fall into the wrong hands.

If Steam Guard is enabled on an account when a login to from an unrecognized device happens an access code will be required as verification. Depending on the account Steam Guard settings, either an email with a code or a code from the Steam Mobile app on a smartphone is required.

Authentication Methods for SteamCMD

1. Username and password - No Steam Guard

2. Username and password - Steam Guard via Email

3. Username and password - Steam Guard via Smartphone (not compatible with LinuxGSM)

Username and Password - No Steam Guard

Simply requires your Steam username and password.

Username and Password - Steam Guard via Email

Requires your Steam username and password and you will also receive an email on the first login to SteamCMD and be required to enter a code. Once the code is entered your server is authorised to use the steam account you entered.

Username and Password - Steam Guard via Smartphone (not compatible with LinuxGSM)

Requires your Steam Username & Password but also requires you have the Steam app on your phone to use 2-factor Authentication.

Using Steam Guard with LinuxGSM

Both options 1 & 2 work with LinuxGSM.

Steam Guard via Smartphone is not compatible because it requires a code every time you login to SteamCMD. This is problematic if you want your game servers to auto-update.

If you have Steam Guard via email enabled the first time you start SteamCMD you will be prompted to enter a steam Guard code and you will receive an email with the code. Copy and paste the code into the prompt and press enter. You will not need to enter a code again.

Server Resources

Ports

• Game Port Default: 26000 UDP

Default Config Location

Client Specific

As written in the FAQ, the default Configuration files are located in:

Serverhosting Locations

You can start Xonotic with the startparameter '-userdir'. With this parameter, Xonotic expects in that folder a subfolder data with the server.cfg. For example for choosing ./xonotic-linux64-dedicated -userdir /home/xonotic/server1 your server.cfg location should be /home/xonotic/server1/data/server.cfg

Game Modes

A list is currently located in . with the following server parameters

Custom Maps

Server side

Xonotic has Custom Maps support in fileformat pk3. Maps should be located in the data folder like server.cfg on your dedicated Server.

Make it useable for Clients

Xonotic doesn't provide a Filedownloader inside the gameserver, have need to host your custommaps on HTTP Webspace and set the correct values in server.cfg.

Example

• Userdir: -userdir /home/xonotic/server1: add foo.pk3in /home/xonotic/server1/data/

• server.cfg: Add sv_curl_defaulturl="http://xonotic.foo.bar"

• Put foo.pk3 in the HTTP Root Folder to make it accessable via http://xonotic.foo.bar/foo.pk3

Look at for more infos about Custom Map Hosting

Start parameters

Every Server cvar can be overwritten in an starting argument, but it's recommended to setup as much as possible in server.cfg

Game Server Login Token is a new system by Valve for managing game servers.

Games using GSLT

• Ballistic Overkill

• Brainbread 2

• Black Mesa: Deathmatch

• Blade Symphony (required)

• Counter-Strike: Global Offensive (required)

• Counter-Strike: Source (required)

• Counter-Strike 2 (required)

• Day of Defeat: Source

• Empires Mod

• Garry’s Mod (required)

• Insurgency

• Insurgency: Sandstorm

• No more Room in Hell (required)

• Nuclear Dawn

• Team Fortress 2

• Tower Unite

• Unturned

• Zombie Panic! Source