Server settings, Java and mods

Server settings

The common ones are plain fields: Server name, Port, Difficulty, Game mode, Whitelist in the file, PvP, Allow flight, Monsters, Nether, Enable RCON.

Everything else from server.properties is in the table below, split into sections — game, world, world generation, connection, RCON, resource pack, advanced and other. Switch sections with the dropdown, or type into Find a setting and search by name. What a setting does appears when the mouse is over it, and under the table for the row that is selected.

The list of settings is not invented by the panel. The core writes server.properties itself on the first start, so the keys of a new version appear on their own; ones the panel does not yet know about land in other rather than disappearing.

Save writes the file, Reload reads it back from disk.

Java options

Under the memory is the table of Java options: a tick, a value, and a line saying what the option does. Recommended set fills in a sensible one.

Add your own takes an option the panel does not know: it is not interpreted, it is passed to the server exactly as written.

Mods and plugins

The panel shows what is installed on the server — the plugins folder for Bukkit, Spigot and Paper, the mods folder for Forge and Fabric. Files can be added and removed.

For each one there is a verdict on whether it fits: the panel reads the metadata inside the jar — plugin.yml, fabric.mod.json, META-INF/mods.toml, mcmod.info — works out the versions declared there, including ranges, and compares them with the core and the version of the server.

Green means it fits, red means a different loader, orange means a different version. Treat it as a hint rather than a guarantee: the verdict is only as good as what the author of the mod wrote down, and that is not always exact.

Find a mod searches the Modrinth and CurseForge catalogues and installs one in a single press — into a server on this computer, or into a remote one.

Next

Copies of the world, and updating the core without losing it, are in Backups and updates.