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Download NSClient++ 0.3.9

Install NSClient++

  • Run the installer
  • The welcome page appears
  • Click Next
  • Tick the box I accept the terms in the License Agreement
  • Click Next
  • Accept the defaults
  • Click Next
  • Configuration page, being a fresh install there is nothing to select here
  • Click Next
  • Allowed hosts, type the IP Address of your Nagios Core host, for example:
  • NSClient Password
    • This can be left blank, it is not used with NRPE
  • Modules to load (tick the following):
    • Enable common check plugins
    • Enable NRPE server (check_nrpe)
    • Enable WMI checks
  • Click Next
  • Click Install
  • Wait for NSClient++ to install
  • When finished click Finish (don't tick the box Start service)

Configure NSClient++

There are a couple of final settings to change in the config file.

  • Open the Run dialog (Windows Key + R)
  • Type notepad "C:\Program Files\NSClient++\NSC.ini" and press Enter
  • This opens the config file in Notepad
  • There is a section called [NRPE]
  • Change:
    • ;allow_arguments=0
    • to
    • allow_arguments=1
  • Change:
    • ;allow_nasty_meta_chars=0
    • to
    • allow_nasty_meta_chars=1
  • Save and Close the file

Start NSClient++

  • Open the Run dialog (Windows Key + R)
  • Type services.msc and press Enter
  • This opens the services management console
  • Find NSClient++ service
  • Right click it and select Start
  • Wait for the service to start
  • Close the services manangement console when service is started

Test NSClient++

This will test that the NSClient++ is properly installed and listening on port 5666. The following command is executed on a Nagios Core server and the computer running NSClient++ has the ip address
  • Type /usr/local/nagios/libexec/check_nrpe -H and press Enter
  • You should receive a response like:
    • I ( 2011-08-16) seem to be doing fine...
  • This confirms the NSClient++ is working