Nagios Support Forum

sudo systemctl start nagios.service
Failed to start nagios.service: Unit nagios.service not found.
root@ukldn-ixhs-nms02:/# sudo update-rc.d nagios defaults
update-rc.d: error: initscript does not exist: /etc/init.d/nagios

Is this a new install?
What version?
How was it installed?

If from source did you run the following?

thanks

I have sorted it out
I just have to reinstall it
I think I missed some steps

Excellent, glad you got it working.