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LinuxGSM is the best documented default for a self-managed Linux Arma 3 server. It installs the dedicated server through SteamCMD, exposes start, stop, restart, update, query and console controls, and documents mod and headless-client workflows. Bohemia Interactive’s own dedicated-server documentation remains the authority for the executable, server.cfg, profile placement and safe account permissions. Choose a web panel such as TCAdmin instead when browser administration, scheduled SteamCMD jobs and several services matter more than a lightweight command-line setup.
Quick answer: which Arma 3 manager should you use?
A server manager does not replace the Arma 3 dedicated server. It automates installation, process control, updates, configuration and routine administration around the executable supplied by Bohemia Interactive. Your choice is mainly an operating-model decision: command line and maximum transparency, or a web panel and centralized convenience.
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| Option | Best fit | Deployment and updates | Configuration and mods | Main trade-off |
|---|---|---|---|---|
| LinuxGSM | One or more Linux instances managed by an administrator comfortable with SSH | Script-based install through SteamCMD; direct update, restart, query and console actions | Uses Arma 3 configuration files and startup settings; documented Workshop and manual mod workflows; can run a separate headless-client instance | You must design your own web access, permissions, backups and scheduling around the scripts |
| Bohemia Interactive baseline | Operators who want the underlying server model with no management layer | Install and update the Linux executable with SteamCMD or your own scripts | Direct control of server.cfg, profile files, ports and launch parameters |
More manual work for service supervision, repeatable updates and multi-instance administration |
| TCAdmin | Teams that need a browser interface, scheduled tasks and several managed services | SteamCMD downloads, a documented Steam Update action, scheduled jobs and Steam Guard handling | Panel templates and service settings can centralize administration; verify that the Arma 3 template supports your required options | Licensing, template quality and panel overhead must be checked before purchase |
There is no authoritative performance, uptime or player-capacity benchmark that proves one manager is faster than another. The manager mostly changes how you deploy and operate the same game server. CPU, memory, storage, network quality, mission design and mod load remain the practical determinants of capacity.
What an Arma 3 server manager actually controls
Arma 3 has a dedicated Linux executable, and its core behavior is described by the game’s configuration and profile files. A manager adds repeatability around that core. In practice, you are choosing how to handle seven jobs:
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- Deployment: create the game-server directory, authenticate SteamCMD where required and download the files for the Arma 3 server application.
- Process lifecycle: start, stop and restart the process, detect a crashed instance and expose a console or query command.
- Updates: run SteamCMD updates manually or on a schedule, then decide when a restart is safe.
- Configuration: maintain
server.cfg, the profile location, ports, query settings and launch parameters without losing changes during an update. - Content: install Workshop or manually downloaded mods, place any required key files and keep server and client versions compatible.
- Scaling: operate multiple instances with distinct ports and directories, and optionally add a headless client for AI calculations.
- Security and accountability: run as a non-root service account, limit file ownership and record who changed a setting or triggered an update.
LinuxGSM addresses these tasks with shell scripts and documented conventions. A panel presents many of the same operations in a browser and adds scheduling and multi-service controls. The official Bohemia documentation defines what the executable and its files expect; use that documentation to validate any manager’s assumptions.
Why LinuxGSM is the best default for a self-managed Linux host
LinuxGSM describes itself as “the command-line tool for quick, simple deployment and management of Linux dedicated game servers.” Its Arma 3 target is a practical default because the workflow is visible, scriptable and close to the underlying server.
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The Arma 3 target downloads the dedicated server with SteamCMD rather than asking you to assemble files manually. The current default configuration identifies the Arma 3 server application as app ID 233780. A typical deployment is:
- Create a separate service account for the game server, commonly named
steam, and give it ownership of the instance directory. Do not run the server as root. - Install the LinuxGSM Arma 3 target and make its generated instance script executable. The conventional instance name is
arma3server; a custom name is possible if you maintain several instances. - Run the script’s
installaction. LinuxGSM invokes SteamCMD and downloads the files associated with app ID233780. - Open the generated configuration and set the hostname, password policy, mission rotation, administrator settings, ports and any launch parameters before the first public start.
- Start the instance and use the script’s query or details action to confirm the process, assigned ports and file paths.
The exact script filename depends on how you name the instance, but LinuxGSM’s action model remains the same. Keep the script, configuration and data under the service account so that an update cannot create root-owned files that later prevent a restart.
Repeatable lifecycle commands
For a conventional instance, LinuxGSM exposes actions such as:
./arma3server startto launch the service../arma3server stopto shut it down cleanly../arma3server restartafter a configuration or mod change../arma3server updateto run the SteamCMD update path../arma3server consoleto attach to the server console when supported by the instance../arma3server detailsor the target’s query action to inspect ports, files and runtime information.
Treat these as service operations, not as substitutes for editing the game configuration. Back up server.cfg, profiles and your mod manifest before changing them. If your target uses a different generated filename, substitute that filename in each command.
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Configuration depth without hiding the files
LinuxGSM keeps Arma 3’s configuration model accessible. You can edit the game’s server.cfg, profile data and startup parameters directly, while LinuxGSM supplies the surrounding paths and process controls. This matters when you need a setting that a panel template does not expose, or when you want to reproduce an instance from version-controlled text files.
Use the official Bohemia documentation to verify the accepted syntax and location of each file. Keep game settings in the appropriate Arma 3 configuration and use LinuxGSM’s instance configuration for manager-specific values such as the installation directory, ports, update behavior and process options. Separating those layers makes it easier to replace the manager later.
Updates with an explicit restart decision
Running an update downloads changed server files, but it does not make an active process magically load them. Plan a maintenance window, stop or restart the instance as appropriate, run the update, then start it and check the query output. If a mission or mod update requires a coordinated client change, announce the new content before reopening the server.
For a single private server, a manual update action is often safer than an unattended restart. For several instances, schedule the update and restart only after checking that the process is idle or that your community has been notified. LinuxGSM gives you the command-line building blocks; your scheduler and operating-system service policy determine when they run.
Using the official Bohemia Interactive server model correctly
Bohemia Interactive’s dedicated-server documentation is the reference point beneath every manager. It states that “A Linux executable is provided to launch the server.” It also instructs operators to run the server “under the steam user and not root or another administrator!” Those two points are operational requirements, not optional style preferences.
Executable, server.cfg and profile files
The executable starts the game server; server.cfg defines server behavior such as identity, access rules and mission selection; and the profile location stores persistent settings and logs. A manager can generate directories or pass launch parameters, but it cannot change what the executable accepts. When a panel or script appears to ignore a value, confirm the effective file path and parameter against Bohemia’s documentation before changing tools.
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Dedicated-user permissions
Create the service account before installing files, then ensure that account can read and write the server directory, profile data, logs and mod directories. Running the process as root makes an exploit or malformed mod more consequential and commonly leaves mixed ownership after administrative commands. If you need elevated privileges for package installation or firewall changes, perform that task separately and return to the dedicated account for game-server operations.
When a web panel such as TCAdmin is worth the overhead
TCAdmin is a reasonable choice when a browser interface and centralized scheduling are more valuable than a minimal shell workflow. Its documentation covers SteamCMD downloads, Steam Guard handling, scheduled tasks and a Steam Update action that an operator can select for a game server after SteamCMD is configured.
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- Install the panel and create a service or game-server profile on the host.
- Configure SteamCMD credentials and Steam Guard requirements according to the panel’s instructions. Use an account intended for server distribution rather than sharing a personal account with staff.
- Select the Arma 3 template or create a custom template, then verify that it exposes the ports, profile path, startup parameters and mod directories your missions require.
- Download the server files through the panel’s SteamCMD integration.
- Use the panel’s Steam Update action for a controlled update, and create a scheduled task only after testing the restart behavior.
- Assign staff roles, review file permissions and test a complete stop-update-start cycle before opening the service to players.
Advantages for multi-service operators
- A browser dashboard reduces the need to grant every moderator SSH access.
- Scheduled tasks can standardize updates, restarts, backups and maintenance notices across several services.
- One interface can administer Arma 3 alongside other supported dedicated servers.
- Role-based access and activity records can be easier to explain to a team than a collection of shell histories.
Questions to answer before buying
- Does the current Arma 3 template expose every startup parameter, profile path and port you need?
- Can you install Workshop content and manually downloaded mods without the panel overwriting your directory layout?
- How does the panel handle Steam Guard prompts, failed downloads and credentials after a password change?
- Does a scheduled update stop the server, wait for completion and restart it, or merely replace files beneath a running process?
- What license applies to your number of instances, and where are panel data and logs stored?
Do not assume a web interface is Arma 3-optimized merely because it can launch a SteamCMD server. Validate the template and licensing terms for your edition and operating system before committing.
Managing Arma 3 mods without breaking the server
LinuxGSM documents both Steam Workshop and manual-download approaches. The manager can automate file placement and lifecycle commands, but it cannot make two incompatible mod versions compatible. Treat mods as a release set that must be tested and recorded.
Workshop-based content
- Record the Workshop items required by the mission and the version or revision you intend to run.
- Download the items on the server through the supported SteamCMD or LinuxGSM workflow.
- Confirm that each downloaded directory is present in the server’s content path and that the launch configuration references the intended directories.
- Restart the server after content changes, then join with a test client that has the same mod set.
- Keep a dated manifest so a rollback can restore the previous set if a Workshop update introduces a conflict.
Manual downloads and key files
Manual installation is useful when a mod is distributed outside Workshop or when you need a fixed archive. Extract it into a predictable directory, preserve the mod’s required folder structure and copy any matching key files into the server’s key directory when the mod author requires signature verification. Never copy client-only files blindly; read the mod’s installation notes and test on a private instance first.
Compatibility checks
- Keep server and client mod revisions aligned. A client joining with a different revision can receive a signature or version error.
- Apply mod updates one at a time when possible, so the change that caused a startup failure is identifiable.
- Check dependencies and load order before blaming the manager. A script can start the process correctly while Arma 3 rejects an invalid combination.
- Back up the previous mod directories and configuration before a large update.
- Remove unused content from the launch configuration rather than leaving stale entries that make troubleshooting ambiguous.
LinuxGSM explicitly warns that mods may be unstable or incompatible. Consider that warning part of your operating procedure: maintain a test instance, schedule mod changes, and communicate required client updates.
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Adding a headless client for AI calculations
A headless client is a separate Arma 3 client process that can take on AI calculations. LinuxGSM documents operating it as a separate instance. It is not a checkbox that turns on extra capacity inside the main server; it is another process with its own files, identity and connection settings.
Separate-instance pattern
- Create a second LinuxGSM instance under the same dedicated service account or another appropriately restricted account.
- Give the headless-client instance its own directory and configuration so updates and logs cannot overwrite the primary server.
- Assign non-conflicting network ports and set the connection parameters required by the main server.
- Configure the primary server to accept and use the headless client, following Bohemia’s server configuration requirements.
- Start the main server first, then start the headless client and verify its connection in the server console or logs.
- Test a representative mission. AI behavior, scripts and mod dependencies must be validated with the headless client enabled and disabled.
The headless client needs the same relevant mod set as the mission expects. If it fails to connect, check ports, passwords, profile paths, mod revisions and the primary server’s acceptance settings before changing the manager. Keep its restart schedule coordinated with the main instance so an update does not leave one process on a different build.
LinuxGSM versus a panel: a practical decision framework
| Your situation | Better starting point | Reason |
|---|---|---|
| You administer one Linux host and are comfortable with SSH | LinuxGSM | Low overhead, transparent files and direct lifecycle commands |
| You need several Arma 3 instances with different ports and missions | LinuxGSM or a panel | LinuxGSM keeps instances explicit; a panel reduces repetitive browser administration |
| Nontechnical moderators must restart services or read status | Web panel | Role-based browser access can avoid broad SSH permissions |
| You require scheduled SteamCMD updates and restarts | Either, after testing | LinuxGSM supplies commands for your scheduler; TCAdmin supplies documented scheduled tasks |
| You run a separate headless client | LinuxGSM is a strong fit | The documented separate-instance pattern makes process and file boundaries explicit |
| You need a setting not exposed by a template | LinuxGSM or the official baseline | Direct access to configuration and startup parameters avoids panel-template limits |
| You want vendor support for a packaged hosting workflow | Panel, after verification | Confirm Arma 3 template coverage, licensing and recovery behavior first |
A safe maintenance routine
A manager is only as reliable as the routine around it. Use this checklist for every release or maintenance window:
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- Back up text and state: copy
server.cfg, profile data, mission files, mod manifests and any custom scripts. - Test privately: start a test instance with the proposed update and have a client join using the exact mod set.
- Stop cleanly: announce the window and stop the production process through LinuxGSM or the panel rather than killing it abruptly.
- Update: run the SteamCMD update action and inspect its output for authentication or disk errors.
- Apply content changes: install or remove mods, verify keys and review startup parameters.
- Start and observe: check process status, console output, logs, query response and player connectivity.
- Keep a rollback: if the server fails to start or clients report mismatches, restore the previous files and manifest instead of repeatedly changing several variables.
Troubleshooting common failures
SteamCMD cannot download or update
Check that the service account can write to the installation directory, that the host has working outbound connectivity and that Steam Guard or credentials have been completed. Confirm the app ID is the Arma 3 server ID 233780 in the effective configuration. Run the update interactively once so you can read the error before placing it in a schedule.
The server process starts but players cannot see or join it
Verify the configured game and query ports, firewall rules, host-network forwarding and the address advertised to clients. LinuxGSM’s current default Arma 3 configuration uses port 2302; a custom instance may use another port, but every related rule and query setting must match. Check the server console and query output before changing mission or mod files.
Clients receive mod or signature errors
Compare the client and server manifests, including revisions and dependencies. Confirm that required key files are in the server’s key directory and that the startup configuration does not reference an old directory. Roll back the most recent mod change if the failure appeared immediately after an update.
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The headless client will not connect
Start the primary server first, then inspect both instances’ ports, profiles, passwords, mod sets and acceptance settings. Ensure the headless client is a separate LinuxGSM instance and is not sharing a directory or port with the main process. Logs usually reveal whether the failure is authentication, networking or a missing dependency.
An update leaves files owned by root
Stop using elevated commands for the game process. Repair ownership of the instance, profile, log and mod directories for the dedicated service account, then rerun the manager action as that account. Bohemia’s guidance specifically requires running the server under the steam user rather than root or another administrator.
Costs and hosting choices
LinuxGSM is a management script for a self-managed Linux host; your costs are the virtual or dedicated machine, storage, bandwidth and your administration time. A web panel adds licensing or managed-service costs, depending on the provider and number of instances. The available evidence does not establish a universal TCAdmin price, so obtain a current quote for your deployment rather than relying on an old figure.
Choose a host with enough CPU, memory, fast storage and network capacity for your mission and mod set, and confirm that you receive firewall and operating-system access. A managed host can reduce maintenance work but may restrict kernel settings, custom startup parameters or unusual mod layouts. A self-managed host gives you full control and makes LinuxGSM’s transparent workflow especially useful.
Final recommendation
Start with LinuxGSM when you control a Linux VPS or dedicated machine and want the clearest path from SteamCMD to a working Arma 3 server. Keep Bohemia Interactive’s executable and configuration documentation as the authority, run every process under a dedicated non-root account, and treat mods and headless clients as separately tested production components. Move to TCAdmin when browser access, staff roles, scheduled SteamCMD jobs and multi-service administration justify the panel’s licensing and template checks.
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