[[PageOutline]]

 = MCstats =
 * [https://bukkit.org/threads/mcstats-plugin-metrics-r7-easy-advanced-plugin-statistics.77352/ MCStats / Plugin Metrics (R7) - Easy & advanced Plugin Statistics | Bukkit Forums]
 * [http://www.spigotmc.org/threads/random-outgoing-connections-from-spigot.50091/ Random outgoing connections from Spigot | SpigotMC - High Performance Minecraft]
 * [http://www.spigotmc.org/threads/disabling-mcstats-metrics.2890/ Disabling McStats / Metrics | SpigotMC - High Performance Minecraft]

 * 600秒おきに情報が送信される
 * plugins/PluginMetrics/config.yml
  * {{{opt-out: true}}}とすることで、サーバ情報などの自動送信は止まる

 * 実際に送受信されるデータ
{{{
POST /report/Spigot HTTP/1.1
User-Agent: Java/1.8.0_45
Host: mcstats.org
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 241

guid=4ee6e6f7-e930-4268-ada3-cf5448ae0100&version=git-Spigot-870264a-0a645a2&server=git-Spigot-870264a-0a645a2+%28MC%3A+1.8.3%29&players=0&revision=6&osname=Windows+7&osarch=x86_64&osversion=6.1&cores=8&online-mode=true&java_version=1.8.0_45
}}}
{{{
HTTP/1.1 200 OK
Server: nginx/1.6.2
Date: Sun, 31 May 2015 17:06:55 GMT
Content-Type: text/plain
Content-Length: 2
Connection: keep-alive

OK
}}}
{{{
POST /report/Spigot HTTP/1.1
User-Agent: Java/1.8.0_45
Host: mcstats.org
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 241

guid=df437b46-3e98-419b-b6c1-9ccd7eb2262a&version=git-Spigot-870264a-0a645a2&server=git-Spigot-870264a-0a645a2+%28MC%3A+1.8.3%29&players=0&revision=6&osname=Windows+7&osarch=x86_64&osversion=6.1&cores=8&online-mode=true&java_version=1.8.0_45
}}}
{{{
HTTP/1.1 200 OK
Server: nginx/1.6.2
Date: Sun, 31 May 2015 17:23:25 GMT
Content-Type: text/plain
Content-Length: 2
Connection: keep-alive

OK
}}}
  * guidはconfig.ymlに記載されているものと同一で、ファイルを消すとと再作成される模様

 * 二回目以降は{{{ping=true}}}という要素が追加される
{{{
POST /report/Spigot HTTP/1.1
User-Agent: Java/1.8.0_92
Host: mcstats.org
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 256

guid=fce313e6-a730-4cca-b905-8e1e2dfc6191&version=git-Spigot-8a048fe-71e5248&server=git-Spigot-8a048fe-71e5248+%28MC%3A+1.9.4%29&players=0&revision=6&osname=Linux&osarch=x86_64&osversion=4.5.4-1-ARCH&cores=4&online-mode=true&java_version=1.8.0_92&ping=true
}}}
{{{
HTTP/1.1 200 OK
Server: nginx/1.8.1
Date: Sun, 29 May 2016 14:12:14 GMT
Content-Type: text/plain
Content-Length: 2
Connection: keep-alive

OK
}}}

 * [../server#snoop.minecraft.net snoop.minecraft.net] と同様、現在ログインしているユーザー数は{{{players}}}として送信される
{{{
POST /report/Spigot HTTP/1.1
User-Agent: Java/1.8.0_92
Host: mcstats.org
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-type: application/x-www-form-urlencoded
Content-Length: 256

guid=fce313e6-a730-4cca-b905-8e1e2dfc6191&version=git-Spigot-8a048fe-71e5248&server=git-Spigot-8a048fe-71e5248+%28MC%3A+1.9.4%29&players=1&revision=6&osname=Linux&osarch=x86_64&osversion=4.5.4-1-ARCH&cores=4&online-mode=true&java_version=1.8.0_92&ping=true
}}}
{{{
HTTP/1.1 200 OK
Server: nginx/1.8.1
Date: Sun, 29 May 2016 14:42:52 GMT
Content-Type: text/plain
Content-Length: 2
Connection: keep-alive

OK
}}}

 = LagMeter =
 * [http://dev.bukkit.org/bukkit-plugins/lagmeter/ LagMeter - Bukkit]

 * /srv/craftbukkit/plugins/LagMeter/settings.yml
{{{
Commands:
    Lag:
        displayEntities: true
        displayChunks: true
log:
    interval: 30
    logTotalEntitiesOnly: false
    logTotalChunksOnly: false
}}}
 * /srv/craftbukkit/plugins/LagMeter/lag.log
{{{
[01-03-2016 15:50:01] TPS: 20.0
Memory free: 698.37/989.88 (70.55%)
Players online: 0/20
Chunks loaded in world "world": 256
Chunks loaded in world "world_nether": 0
Chunks loaded in world "world_the_end": 0
Total chunks loaded: 256
Entities in world "world": 70
Entities in world "world_nether": 0
Entities in world "world_the_end": 0
Total entities: 70

[01-03-2016 15:51:01] TPS: 20.0
Memory free: 798.28/989.88 (80.64%)
Players online: 0/20
Chunks loaded in world "world": 256
Chunks loaded in world "world_nether": 0
Chunks loaded in world "world_the_end": 0
Total chunks loaded: 256
Entities in world "world": 70
Entities in world "world_nether": 0
Entities in world "world_the_end": 0
Total entities: 70

(snip)

[01-03-2016 16:11:01] TPS: 20.0
Memory free: 770.26/989.88 (77.81%)
Players online: 1/20
Chunks loaded in world "world": 441
Chunks loaded in world "world_nether": 0
Chunks loaded in world "world_the_end": 0
Total chunks loaded: 441
Entities in world "world": 148
Entities in world "world_nether": 0
Entities in world "world_the_end": 0
Total entities: 148

(snip)

[01-03-2016 16:36:15] TPS: 20.0
Memory free: 740.14/989.88 (74.77%)
Players online: 1/20
Chunks loaded in world "world": 272
Chunks loaded in world "world_nether": 441
Chunks loaded in world "world_the_end": 0
Total chunks loaded: 713
Entities in world "world": 74
Entities in world "world_nether": 26
Entities in world "world_the_end": 0
Total entities: 100
}}}

 * [http://sourceforge.net/projects/mcrcon/ mcrcon]
  * [[Image(lagmeter.png,33%)]]
{{{
[01-03-2016 16:42:35] TPS: 20.0
Memory free: 751.50/989.88 (75.92%)
Players online: 1/20
Chunks loaded in world "world": 272
Chunks loaded in world "world_nether": 441
Chunks loaded in world "world_the_end": 0
Total chunks loaded: 713
Entities in world "world": 75
Entities in world "world_nether": 26
Entities in world "world_the_end": 0
Total entities: 101
}}}
  * RCONの方は手動で取得しているので、厳密に同時刻ではない

 * [http://dev.bukkit.org/bukkit-plugins/essentials/ Essentials] プラグインにも似たような機能は存在している
  * http://wiki.mc-ess.net/wiki/Command_Reference
  > gc
  >   lag, mem, memory, uptime, tps, entities	Displays server usage information.	/<command>
  > {{{
  > Instructions:	Displays chunk, memory, and world information.
  > }}}

 = munin =
 * https://fastlizard4.org/wiki/Download:Minecraft_Munin_plugins
  * github:LizardNet/munin-plugins-minecraft