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A Bukkit plugin which exports minecraft server stats to Prometheus

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Minecraft Prometheus Exporter

A Bukkit plugin which exports Minecraft server stats for Prometheus.

Quick Start

Drop the prometheus-exporter.jar into your Bukkit plugins directory and start your Minecraft server.

After startup, the Prometheus metrics endpoint should be available at

(assuming localhost is the server hostname).

The metrics port can be customized in the plugin's config.yml (a default config will be created after the first use).

Plugin config

Here's a default config with annotations.

# Note that the HTTP server binds to localhost by default.
# If your Prometheus runs on another host or inside a Kubernetes cluster
# set this to any reachable IP or to listen on all interfaces.
host: localhost
# The port can be changed in case it conflicts with any other application.
port: 9225
# Metrics can be enabled individually. Metrics which are disabled
# by default may have a performance impact on your server.
# See the rest of the README for more information.
  jvm_threads: true
  jvm_gc: true
  players_total: true
  entities_total: true
  living_entities_total: true
  loaded_chunks_total: true
  jvm_memory: true
  players_online_total: true
  tps: true
  tick_duration_average: true
  tick_duration_median: true
  tick_duration_min: false
  tick_duration_max: true
  player_online: false
  player_statistic: false

Prometheus config

Add the following job to the

section of your Prometheus configuration:

Single server

- job_name: 'minecraft'
    - targets: ['localhost:9225']
        server_name: 'my-awesome-server'

Multiple servers

You can use labels in your Prometheus scrape configuration to distinguish between multiple servers:

- job_name: 'minecraft'
    - targets: ['localhost:9225']
        server_name: 'server1'
    - targets: ['localhost:9226']
        server_name: 'server2'

Import Grafana Dashboard

  1. Navigate to Grafana -> Dashboards -> Import
  2. Paste in or upload minecraft-server-dashboard.json
  3. Update "JVM Memory Used" to reflect your server max memory (Default 8G)
  4. Edit (bottom right widget) -> Options -> Gauage -> Max

Available metrics

These are the stats that are currently exported by the plugin.


mcplayerstotal Unique players on server (online + offline)
mcloadedchunkstotal Chunks loaded per world
mcplayersonlinetotal Online players per world
mcentitiestotal Entities loaded per world (living + non-living)
mcvillagerstotal Villagers
mcjvmmemory JVM memory usage
mcjvmthreads JVM threads info
mctps Server tickrate (TPS)
mctickdurationmedian Median Tick Duration (ns, usually last 100 ticks)
mctickdurationaverage Average Tick Duration (ns, usually last 100 ticks)
mctickdurationmin Min Tick Duration (ns, usually last 100 ticks)
mctickduration_max Max Tick Duration (ns, usually last 100 ticks)

Player metrics (experimental!)

:warning: The following feature is against Prometheus best-practices and is not recommended for production servers!

There is an option to export per-player statistics like the number of blocks mined, mobs killed, items used, etc. The amount of data stored in Prometheus can dramatically increase when this is enabled as individual time-series will be generated for each player that has ever been seen on the server. The statistic collection may also have an impact on the Minecraft server performance for bigger servers but it has not been measured or tested.

On the other hand this should be quite safe for small private servers with limited players.

You can enable the experimental player export in the config.yaml.

  player_online: true
  player_statistic: true

This will enable the additional metrics.


mcplayerstatistic Player statistics
mcplayeronline Online state by player name

There's a sample dashboard available to get you started.

Collect metrics about your own plugin

You can easily collect metrics about your own plugin.

Include the Prometheus dependency


Collect metrics

This pseudo code shows how you would count invocations of a plugin command.

public class MyPluginCommand extends PluginCommand {

// Register your counter private Counter commandCounter = .name("mc_my_plugin_command_invocations_total") .help("Counter for my plugin command invocations") .register();

@Override public boolean execute​(CommandSender sender, String commandLabel, String[] args) {

// Increment your counter;;

// Do other stuff

return true;



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