• TipAndDoc/monitor/munin
  • TipAndDoc/monitor/munin
  • TipAndDoc/monitor/munin/plugins
  • TipAndDoc/monitor/munin/sample

• ​http://munin-monitoring.org/

• ​muninの集計負荷をtmpfsで低減する（集計時間の短縮も） | へびにっき
• ​HOWTO Rename Munin node without losing history « BeezNest Open-Source specialists
• ​munin設定チェックリストまとめ - Layer8 Reference
• ​MuninTLSSetup - Munin - Trac

  If your Munin installations resides in a hostile network environment, or if you just don't want anyone passing by with a network sniffer to know the CPU load of your Munin nodes, a quick solution is to enable Munin's built-in Transport Layer Security (TLS) support.

• ​Munin で温度を記録しよう。 - よこいまさる日記(2010-11-12)
• ​http://wiki.kartbuilding.net/index.php/Munin_Statistics
• ​muninのプラグインの追加/削除 - 玉虫色に染まれ！
• ​munin で困ったときは munin-node-configure してみる - trial and error
• ​Bug #830564 in munin (Ubuntu): “munin_stats plugin does not work”

  munin_stats

  @@ -52 +52 @@
   
   if ($ARGV[0] and $ARGV[0] eq "config") {
       print "graph_title Munin processing time\n",
  -          "graph_info This graph shows the run time of the four different processes making up a munin-master run.  Munin-master is run from cron every 5 minutes and we want each of the programmes in munin-master to complete before the next instance starts.  Especially munin-update and munin-graph are time consuming and their run time bears watching. If munin-update uses too long time to run please see the munin-update graph to determine which host is slowing it down.  If munin-graph is running too slow you need to get clever (email the munin-users mailing list) unless you can buy a faster computer with better disks to run munin on.",
  +          "graph_info This graph shows the run time of the four different processes making up a munin-master run.  Munin-master is run from cron every 5 minutes and we want each of the programmes in munin-master to complete before the next instance starts.  Especially munin-update and munin-graph are time consuming and their run time bears watching. If munin-update uses too long time to run please see the munin-update graph to determine which host is slowing it down.  If munin-graph is running too slow you need to get clever (email the munin-users mailing list) unless you can buy a faster computer with better disks to run munin on.\n",
             "graph_args --base 1000 -l 0\n",
             "graph_scale yes\n",
             "graph_vlabel seconds\n",

• ​Adjusting Munin's accept timeout - Server Fault

  I have a Munin master that's contacting 5 nodes at the moment and I'm seeing one to two warnings like this in the munin-update.log.

  [WARNING] Call to accept timed out.  Remaining workers: xyz;abc
  

  in your plugin configuration file add

  timeout 120

  or on a per plugin basis in plugin-conf.d

  [plugin_name] timeout 120

• ​Fixing Munin

  Here is how you fix Munin 1.24 for CPanel to get the mysql graphs, the HDD temp graphs, and the Mailman graphs:

  (snip)
  
  [mailman]
  user mailman
  

  • Debianでは「user list」
  • MLの数が多いと数え上げがタイムアウトするので、タイムアウト秒数を増やしておくこと
• ​muninの設定(つづき) - 玉虫色に染まれ！

  • sensors_fan のアラートを消す
  • ping プラグインの追加
  • 複数のグラフを1つにまとめる

• ​rrdtool の RRD はアーキテクチャが異なると使用できない - maruko2 Note.

  この場合、XML 形式に書き出した後、バイナリ形式の RRD として読み込めばよい。

• ​MuninのグラフをCGIリアルタイム生成して負荷軽減する方法(munin-cgi-graph) | Pocketstudio.jp log3

  5. CGI 版のバグに対する対処（ここがハマりどころ）

  • 1.4.6-3ubuntu3.4 では修正済の模様

munin 2.0

• デフォルトではpngによるグラフ画像は生成されなくなった模様
• ​CgiHowto2 - Munin - Trac

• /var/log/munin/munin-graph.log

  2012/10/06 22:10:08 Opened log file
  2012/10/06 22:10:08 [PERL WARNING] Use of uninitialized value in concatenation (.) or string at /usr/share/munin/munin-graph line 74.
  2012/10/06 22:10:08 [PERL WARNING] Use of uninitialized value $graph_fh in <HANDLE> at /usr/share/munin/munin-graph line 75.
  2012/10/06 22:10:08 [PERL WARNING] readline() on unopened filehandle at /usr/share/munin/munin-graph line 75.
  

  • バグ？
  • ​User support list for the munin RRD graphing front end
    • ​fix munin-graph typo in opening $graph_fh · fd27d4c · munin-monitoring/munin
  • /usr/share/munin/munin-graph

    my $graph_fh = new IO::File($config->{libdir} . "/graphs");
    

  • /etc/munin/munin.conf に次の一文を追加すればとりあえずエラーは出なくなる

    libdir /var/lib/munin
    

  • 別のエラーを引き起こす
  • /usr/bin/munin-cron

    2012/10/09 17:47:46 [ERROR] config error under [] for 'libdir /var/lib/munin' : Parse error in /etc/munin/munin.conf for libdir:
     Unknown keyword at end of left hand side of line 9 (libdir )
     at /usr/share/munin/munin-update line 49
    ERROR: Failed to parse config file '/etc/munin/munin.conf': [ERROR] config error under [] for 'libdir /var/lib/munin' : Parse error in /etc/munin/munin.conf for libdir:
     Unknown keyword at end of left hand side of line 9 (libdir )
     at /usr/share/munin/munin-update line 49
     at /usr/share/munin/munin-update line 49
    

counter vs derive

• ​fieldname.type – Munin
• ​HowToWritePlugins – Munin

  To avoid spikes in the graph when counters are reset (as opposed to wrapping), use ${name}.type DERIVE and ${name}.min 0.

• ​munin×JMXでColdFusionのJVMをモニタリングする | @哀T

  追記：GAUGE、COUNTER、DERIVE、ABSOLUTEの違いについて

change interval

• ​graph - Showing a longer timespan in Munin - Server Fault
• ​format-graph_data_size – Munin
• ​#1282 (update_rate needs documentation) – Munin
  • ​Change Interval in Munin With Existing RRD Data - Justin Silver
• ​Waiting for Munin 2.0 - Keep more data with custom data retention plans - Personal Workflow Blog

Windows

• ​http://munin-monitoring.org/wiki/HowToMonitorWindows
  • ​http://code.google.com/p/munin-nude-win32/
  • ​github:munin-monitoring/munin-node-win32
  • ​github:rrzefox/munin-node-win32/tree/recompile forked version
  • ​http://www.iversendata.no/snmagent/

• ​Serf を使用した Munin-node 自動追加, ついでに Winodws8 に Munin-nodeいれてみる - Qiita

• ​Windows

  [MuninNode]
  PortNumber=4949
  LogConnections=1
  MasterAddress=*
  

• ​Munin Node for Windows x64

plugins

• standard plugin list => plugins

• ​https://github.com/renard/munin-exchange-plugins/blob/master/munin-exchange/cpuspeed2
  • ​3.2.3. CPUfreq のポリシーと速度のチューニング

• ​Bash-scripting for iptables/munin

  I am trying to write this munin script to log all the accepted TCP/UDP/ICMP packets that are comming trough my iptable firewall.

  echo tcp.value `iptables -vxL | grep 'ACCEPT.*tcp' | cut -c1-8`
  

• ​IPTables und Munin analysieren Netzwerktraffic

• ​#1341 (cpuspeed plugin doesn't work with new p-state) – Munin

  Since linux-3.9 there is a new intel cpufreq scaling driver which does not provide "/sys/devices/system/cpu/cpu6/cpufreq/stats/time_in_state". Instead you will find "/sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq" showing the current frequency: # cat /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq 1598000

• ​https://www.kernel.org/doc/Documentation/cpu-freq/pcc-cpufreq.txt
• ​https://www.kernel.org/doc/Documentation/cpu-freq/user-guide.txt
  • ​Debian User Forums • View topic - lenny & disable CPU frequency scaling on Core i7
  • ​CPU frequency scaling in Linux with cpufreq

• ​github:SweBarre/munin-lvm
• ​github:kvisle/munin-plugins

minecraft

• ​Minecraft Munin-Plugin [wiki.natenom.name]
  • ​github:Natenom/munin-plugins
• ​github:wckd/Dev/tree/master/Minecraft
  • requred: ​github:rmichela/MCStats2
• ​Munin Plugins for Minecraft | Finn's Blog
  • ​github:thefinn93/munin-minecraft
  • ​http://www.wiki.vg/Rcon
  • ​github:barneygale/MCRcon

diskstats

• ​performance - What is the counter type for Linux's /sys/block/$DEVICE/stat - Server Fault
• ​(git/munin-dev) devel: This corrects the truncating of negative values in the diskstats plugin and calculates its value based on the evidence that this is a overflow value. (91a9e62)