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terraria-server-manager/README.md
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2026-09-30 17:11:22 +00:00

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# terraria-server-manager
Run any number of vanilla **Terraria** and **tModLoader** dedicated servers on one Linux host. Each server is its own systemd service, and they're all managed with the `terractl` command.
```bash
sudo terractl new calamity tmodloader
sudo terractl mods calamity add ~/tmod-export
sudo terractl enable calamity --now
sudo terractl attach calamity
```
## Features
- **Many servers, one host.** Each instance is `terraria@<name>.service`, with its own directory, port, world and mods.
- **Vanilla and tModLoader side by side**, chosen per instance.
- **No manual installs.** Drop the official server zips into `/var/lib/terraria/dist`; they're unpacked on demand, and each instance can be pinned to a specific version.
- **Safe shutdowns.** Stopping a server saves the world first.
- **A live console.** `terractl attach` shows the server's output and lets you type commands into it; `terractl watch` just shows the output.
- **Mod management.** `terractl mods` installs, enables and removes mods, with correct file ownership.
- **Tab completion** for commands, instance names, mods and console commands.
- **Export and import.** Pack an instance into one `.tar.gz` for backups or moving to another machine, and import it anywhere, with paths, ports and ownership adjusted.
- **Manage other hosts.** Run any command on another host with `terractl --host nas ...`, and copy or move instances between hosts with `terractl copy` and `terractl move`, like LXD/Incus remotes. Hosts opt in by running the `terractld` daemon; access is per computer, over pinned TLS.
- **Hardened.** Servers run as an unprivileged `terraria` user and can only write to their own data.
- **Access for moderators.** Members of the `terraria` group can start, stop and restart servers, use the console and read the servers' own logs, without `sudo` and without seeing the rest of the system's logs.
- **Helper for Windows.** A PowerShell script exports your enabled tModLoader mods for the server.
## Requirements
- Debian 12+ or Ubuntu 22.04+ (other systemd-based distributions should work with `make install`)
- `unzip`, `systemd`; for tModLoader, also `curl` and ICU (`libicu`)
- `python3` and `openssl`, for managing other hosts
## Install
Download the `.deb` from the releases page, then:
```bash
sudo apt install ./terraria-server-manager_<version>_all.deb
```
Or install from source, without a package:
```bash
sudo make install
```
## Documentation
See [docs/guide.md](docs/guide.md). It covers installation, creating instances, the console, configuration, mods, versions and upgrades, permissions and troubleshooting. Installed systems also have it at `/usr/share/doc/terraria-server-manager/README.md`.
## Repository layout
```
bin/terractl The command-line tool
systemd/ terraria@.service and terraria@.socket
completions/bash/ Bash completion for terractl
config/ /etc/default settings, sysusers.d and tmpfiles.d entries
packaging/deb/ Debian package metadata and install/remove scripts
docs/guide.md Full documentation
tools/windows/ export-tmod-mods.ps1 for exporting mods from Windows
VERSION Current version, used by the build
Makefile make check | deb | install | uninstall | clean
```
## Building
```bash
make check # bash -n on all scripts, plus shellcheck if installed
make deb # build/terraria-server-manager_<version>_all.deb
```
To release: update `VERSION` and `CHANGELOG.md`, run `make deb`, and attach the `.deb` to the release.
## Disclaimer
This is an unofficial community tool. It is not affiliated with or endorsed by Re-Logic or the tModLoader team. It does not include any Terraria or tModLoader software; you supply the official server downloads.