Simple Bukkit plugin that exposes CPU temperature as a placeholder.
Depends on the plugin PlaceholderAPI.
Should work on majority of Linux hosts, even inside Docker. However, you do need LibreHardwareMonitor on Windows. Not all hosts properly expose CPU sensors, especially VMs.
Values are set to refresh every second (20 ticks).
Use the placeholder %proctemp_temp%, or %proctemp_temp_colored% for a colored version (default green, turns yellow when temp is 80 or higher, and turns red when it's above 90)
A command, /cputemp, also exists.
gradlew.bat build on Windows, or ./gradlew build on *nix.
Resulting JAR file will be available in build/libs