Announces

09-May-2010 - Release of Debain build source contributed by Laurent Foucher

12-Apr-2010 - Shutdown Freebsd+Nagios+N2rrd demo4 Server

28-Feb-2010 - Release of YAL (Yet Another Look) 1.0 see  Live Demo1

28-Feb-2010 - Release of n2rrd 1.4.1 see  Live Demo1

nagios-n2rrd.png

above diagram shows the interaction of n2rrd and rrd2graph with Nagios

Table of Contents

  1. License
  2. Example plugin output string and what n2rrd extracts
  3. Features
  4. Frequently Asked Questions
  5. Support
  6. TODO
  7. Demo
  8. Requirement
  9. Starting Point
  10. Other Links
  11. Comments to

Welcome to Nagios to RRD Project Home

 Nagios to  RRD = n2rrd, is a small perl script, which analyzes perf-data string for one or more name=value pairs and creates/updates RRA (Round Robin Archives).

The archive can later be viewed by any RRD database graph front end e.g. rrd2graph,  Cacti,  Drraw, etc.

License

 GPL Version 2

Example plugin output string and what n2rrd extracts

  • check_http output (anything after '|'): time=0.294561s;;;0. size=46869B;;;0
  • n2rrd understands nagios performance data format
    • 'label'=value[UOM];[warn];[crit];[min];[max]
  • n2rrd extracts: time: time=0. UOM=s max=0., size: size=46869 UOM=B max=0
  • at least one pair like 'name=value' must exist.

Features

  • template based RRA creation
  • simple display tool "rrd2graph" for displaying rrd data generated by n2rrd
  • template based GRAPH creation
  • zoom in/out of graphs
  • searching/grouping of graphs (e.g. screenshots of SysLoadGrouping or icmpGrouping)
  • possibility to parse non standard performance data string with external perl script
    and pass n2rrd conform string to n2rrd
  • possibility to relocate rra file
  • possibility to rewrite DS names
  • if more than one DS values stored, individual values can be viewed by rrd2graph.cgi
  • mapping service name string to single word value
    e.g. System load average to load
  • mod_perl support
  • n2rrd.pl works with  SpeedyCGI
  • dynamic creation of RRA templates (e.g. dynamic template created for nagios plugin check_disk
  • dynamic creation of RRA archives
  • dynamic update of new values in RRA archives
  • dynamic graph template creation (e.g. output of nagios plugin  check_disk)
  • new option to n2rdd/rrd2graph for storing RRA and cache images in groups

Frequently Asked Questions

Why Monitoring + graphs

  1. Monitoring performance of System, Network or Applications nowadays is a must for serious administrators.
  2. Additionally graphical representation of past and present performance data helps not only administrators to recognizing anomalies and trends, but also helps pinpoint bottlenecks or use the information as an aid in budget planning
  3. If you want to check how the system performed during your absence (Weekend, Holiday, etc). The best you can do is have a look at the graphs.
  4. more at FAQ

Support

  • First try community support channels, it is free and n2rrd developers are also members of the list:
  • if you are still interested in commercial support, please check Support

TODO

  • if you like to contribute, please have a look at TodosList

Demo

  •  Live Demo1 a complete monitoring setup based on apache, nagios, n2rrd, rrd2graph (access as username: guest, password: guest)
  •  Live Demo2 the data is collected by n2rrd and displayed using  Cacti
  •  Live Demo3 the data is collected by n2rrd and displayed using  Drraw
  •  Live Demo4 FreeBSD+Nagios+N2RRD live demo server

Requirement

  • Working  Nagios installation
    NOTE: has been developed and tested on Nagios 3.x, 2.x, should work with minimal changes on Nagios 1.x as well
  • PERL - tested with 5.8.x (perl is normally installed on most unix systems by default)
  •  RRDTOOL - including perl packages
  • PERL Module - starting n2rrd ver. 1.4.0  RRD::Simple used by n2rrd.pl for creating dynamic RRA
  • Graph tool - rrd2graph.cgi included with n2rrd package,  Cacti, Drraw or any other display tool

Starting Point

  • Nagios to cacti interface by Detrak, derived from N2RRD  N2Cacti
  • Other tools that too convert performance data to RRD  PNP,  NagiosGraph, Perfparse
    If I missed any other, please let me know..

Comments to

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