SimpleWarnings

Description:
SimpleWarnings is just that, a simple warnings system which allows server admins to set, check, and delete warnings.
SimpleWarnings can be easily configured to execute custom commands on warning, auto-ban a user and/or execute a custom command once they've exceeded a pre-defined warning limit, broadcast a users total number of warnings to the server on join, kick a user when they receive a warning and much more…

Quote:

Upgrading to 0.8.8 or above?

In Simplewarnings-0.8.8 the data handling is changed from YAML to MySQL/SQLite.
However this doesn't mean you'll lose your previous warning data, as you can update your previous warning records quickly and easily.

To update your warning records to 0.8.8+ compatibility, simply type /fixwarn to begin the update process.
Remember: You only need run it once, and only if you're upgrading from a version earlier than 0.8.8

Installation:
1. Download the .jar
2. Place the .jar in your plugins directory
3. Restart the server

Configuration:

For details on configuration see here: Configuration

Quote:

Recent ChangeLog:
1.0
– Updated for UUID compatability
0.9.3
– Updated: DefineFinalBanMsg now refers to the message a banned user will see upon attempting to rejoin, if not set they will see their last warning instead
– Updated: Final warning will be shown as kick message and in the final warning broadcast, instead of the final BanMsg
– Fixed: SimpleWarnings no longer interferes with other banned players ban messages, only banned players with the max number of warnings.
0.9.2
– Fixed bug introduced in v0.9.1 – config.yml not generating on first use due to character conflict
0.9.1
– Updated Autoban BanMsg to be displayed when banned player attempts to log in, if BanMsg not defined the final warning is displayed instead.
– Added: Multiple commands for all custom commands & penalties