Actually the case is that the compiling process and make all, make install processes didn't report any errors but when I trying to access or start the service Nagios it gives me an error stating it's unable to find that service.
This happens with me when I try to manually install the applications from source. Am I missing any important step in the installation process that could be causing this issue.
Did you also run the rest of the make install commands (install-init, install-config, etc.)? I seem to recall that install-init is the one that sets up the services so that "service nagios start" or "systemctl start nagios.service" work.