Nagios Support Forum

benjaminsmith wrote:Hello @epixelitsupport,

Glad Michael was able to help you set up the ping check on the private host with NCPA.

If you'd like to set this up for another service, follow the same process as described in this post.

mbellerue wrote:Okay, are you allowed to install NCPA on the machine with the internal IP address? If so, just copy check_ncpa.py from your Nagios server over to the machine with the external IP address, and then build your check command. You will do basically the same process that you did with check_ping. Your end command might look something like this.

Code: Select all

check_command    check_ncpa!-t 'ASecretToken' -M plugins/check_ncpa.py -a "check_ncpa.py -H <internal_IP> -t '<internal_token>' -M 'services' -q 'service=<your_service_name>,status=running'"

Please make careful note of the usage of single and double quotes.

Everything you need should be in this thread, and you can use your existing check_ping service as a guide.

benjaminsmith wrote:Hello,

OK. Thank you for posting screenshots of the error message. Since it's a 500 error, this is at the server level.

1. Are you able to run a simple command from the public machine to the private machine? Post the output to the following command.

Code: Select all

/usr/local/nagios/libexec/check_ncpa.py -H x.x.x.x -v -t 'test_token' -P 5693 -M 'system/version'

2. Set the log level on NCPA in the private host to debug, and post your ncpa_listener.log from the client? For a Linux system, this can be found in the following directory.

Code: Select all

/usr/local/ncpa/var/log/ncpa_listener.log

See: https://www.nagios.org/ncpa/help.php#in ... leshooting

3. Are you able to log into the web interface for NCAP on the private machine?

mbellerue wrote:Ah, it's an Ubuntu machine. Run apt install python2.7 on the external machine, and that should allow you to run the check_ncpa.py script.