Set up your Garry's Mod server

Set the base server launch

A Garry’s Mod dedicated server normally starts with a map, gamemode and maximum-player setting. Runic manages the underlying SRCDS install, allocation and required provider-side networking.

Use server.cfg for persistent server rules that belong there, and keep RCON/admin credentials secret.

Add a Workshop collection

1. Create or choose the intended public or unlisted Steam Workshop collection.
2. Record the collection ID and configure it through the validated Runic startup field.
3. Back up the server before replacing a large live addon set.
4. Restart the server and watch the console while the collection downloads or updates.
5. Verify the map, gamemode and required content from a normal player account before adding more addons.

Troubleshoot addons one change at a time

Lua errors, missing mounted content and incompatible addons can all break a Garry’s Mod startup. Start with the first useful console error and the most recent addon change rather than reinstalling the entire service immediately.