Issue while adding new host for monitoring

[chinmaypatil]

Hello,
I am configuring Nagios Core Version 4.5.0 and nagios plugin version 2.4.8 on Ubuntu 24.04 LTS and have everything set properly. Now when I add a new machine to monitor like deb12.cfg, it doesn't compile when added the define service section in the file. It throws an error as below:
sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg

Error: Service check command './check_ncpa.py -t NagiosCore123 -M system/agent_version' specified in service 'NCPA Agent Version' for host 'deb12' not defined anywhere!
Checked 9 services.
Checked 2 hosts.
Checked 1 host groups.
Checked 0 service groups.
Checked 1 contacts.
Checked 1 contact groups.
Checked 25 commands.
Checked 5 time periods.
Checked 0 host escalations.
Checked 0 service escalations.
Checking for circular paths...
Checked 2 hosts
Checked 0 service dependencies
Checked 0 host dependencies
Checked 5 timeperiods
Checking global event handlers...
Checking obsessive compulsive processor commands...
Checking misc settings...

Total Warnings: 0
Total Errors: 1

Now I am not sure why its happening. I did installed it 2-3 months back using same version and it did worked but now its not.

If need any more info then please let me know I will share it ASAP.

Thank You.

[MaterazziSan]

Hi,

I would check:

• Host "deb12" definition.

• Service definition.

• Command definition.

Can you share those?

Best regards