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13 votes
Current Version
Last Release Date
Compatible With
  • Nagios 2.x
  • Nagios 3.x
  • Nagios 4.x
  • Nagios XI
NCPA is a cross-platform monitoring agent that runs on Windows, Linux/Unix, and Mac OS/X machines. Its features include both active and passive checks, remote management, and a local monitoring interface.

General documentation can be found at:

Explicit NCPA installation instructions can be found at:

Downloads are available for Windows, Mac OS X, CentOS 5.x, CentOS 6.x, CentOS 7.0, Ubuntu/Debian, and OpenSUSE 13.x
Reviews (7)
It provides great information, and has a great deal of useful functionality.

Still needs an x64 Windows release, especially with nano server on the horizon.

Thei github site appears to be completely inactive though, and support questions are going unanswered. If the project isn't dead, someone needs to speak up, otherwise we're going to have to switch back to NSClient++.
byavojacek, June 6, 2014
Grat plugin, except when I tried to use it on Win Server :
OS Name: MicrosoftR Windows ServerR 2008 Standard
OS Version: 6.0.6002 Service Pack 2 Build 6002
Then I got this err message
INFO:root:Looking for config at: C:\Program Files (x86)\Nagios\NCPA\etc\ncpa.cfg
INFO:root:Looking for plugins at: C:\Program Files (x86)\Nagios\NCPA\plugins/
ERROR:root:couldn't find any physical disk
Traceback (most recent call last):
File "C:\Users\nscott\Documents\Git\ncpa\agent\", line 86, in start
File "C:\Users\nscott\Documents\Git\ncpa\agent\listener\", line 11, in
File "C:\Users\nscott\Documents\Git\ncpa\agent\listener\", line 176, in
File "C:\Python27\lib\site-packages\psutil\", line 1229, in disk_io_counters
RuntimeError: couldn't find any physical disk
please update your init files for both listener en passive in the debian packages

status() {
if [ -f /usr/local/ncpa/var/ ]; # needs space before ] and said ncpa_posix_passive
pid=`cat /usr/local/ncpa/var/` # said ncpa_posix_passive
echo "Process running with PID $pid"
echo "Process is not running."
Despite previous claims, there is no link to source code and the license included is a proprietary one.
bylonlone, October 23, 2013
How do I install NCPA on Mac OS X? In the install instructions, I see downloads for Windows, Linux RPM, and DEB packaging. Can any of those options be used for Mac or is there another download somewhere else?
byScott, October 10, 2013
Its license is included with the download. Its the Nagios Open Source License.
byeldespistado, October 4, 2013
What about NCPA license type?
Can be used with Nagios Core or need I to have contract Nagios XI?