Multi-Server Setup

Fabricator is designed around multiple server records stored in one server index. Each record has its own install path, port, loader, Minecraft version, memory setting, Java metadata, and server.properties values.

Create separate server directories

In production, server data defaults to /var/lib/fabricator/servers. Use one directory per server:

/var/lib/fabricator/servers/
├── survival/
├── creative/
└── modded-pack/

Relative install paths are resolved inside SERVER_ROOT. Absolute paths are accepted only when they still resolve inside SERVER_ROOT.

Avoid port conflicts

Every server needs a unique Minecraft port. Fabricator validates the port field when creating a server and rejects duplicates in the server index.

Common pattern:

Server	Port
Main survival	25565
Creative	25566
Modpack testing	25567

If you enable query or RCON, keep those ports unique too.

Switching servers

After selecting a server, the sidebar switcher changes the active context. Every server-scoped page uses the server_id from the route:

/server/<server_id>/overview
/server/<server_id>/console
/server/<server_id>/players
/server/<server_id>/mods
/server/<server_id>/files
/server/<server_id>/backups
/server/<server_id>/settings

Concurrent operations

Fabricator uses per-server locks, so one busy server does not block unrelated servers. For the same server, mutating operations such as install, start, stop, settings save, file write, player mutation, backup, and restore are serialized.

Resource planning

Fabricator itself is lightweight. Your host capacity is determined by the Minecraft processes you run. Plan CPU, RAM, and disk for the combined peak of all servers, worlds, backups, and Java runtimes.