OPs, whitelist, bans

Quick reference for the admin-side commands.

Making someone an operator (OP)

From the panel console (or in-game with /op if you're already OP):

op PlayerName

OPs can run admin commands. To revoke:

deop PlayerName

OP levels (1–4) can be set in server.properties (op-permission-level). Default is 4 (full).

Whitelist

A whitelist makes the server private — only listed players can join.

Enable:

whitelist on

Add players:

whitelist add PlayerName

Remove:

whitelist remove PlayerName

Show the list:

whitelist list

Disable entirely:

whitelist off

Bans

Ban a player by name:

ban PlayerName Reason text here

Pardon (unban):

pardon PlayerName

IP-level ban:

ban-ip 198.51.100.42

Kick (temporary)

kick PlayerName Cool down a bit

Player is disconnected. Can rejoin immediately.

Online mode

server.properties:

• online-mode=true — requires Mojang authentication (default; recommended)
• online-mode=false — allows cracked clients (only use this if you really mean to)

Cracked servers are a magnet for griefers and stolen accounts. Don't do it unless you have a specific reason and a tight whitelist.

Per-player permissions

For finer control than OP/non-OP, install LuckPerms (a permissions plugin). Lets you create groups (admin, mod, vip, default) with specific permissions, assign players to groups, and grant/revoke individual permissions.