Nagios Support Forum

Yes, I did it. Nothing changes.

Nothing changed, same result.

I need to run again this command:
iptables -I INPUT -p tcp --destination-port 5666 -j ACCEPT

Any idea?

Thanks,
Ivan

systemctl enable iptables-persistent
Failed to start iptables-persistent.service: Unit iptables-persistent.service failed to load: No such file or directory.

Yes, the nrpe service runs correctly after reboot: debian-ftp:~# systemctl status nrpe ● nrpe.service - Nagios Remote Plugin Executor Loaded: loaded (/lib/systemd/system/nrpe.service; enabled) Active: active (running) since mar 2019-05-07 08:50:46 CEST; 3min 1s ago Docs: http://www.nagios.org/docum...

I tried the command you suggested, but no result. Same issue as before, after reboot the connection is refused.
This is the error from Nagios console: (No output on stdout) stderr: connect to address xxx.xx.xxx.xxx port 5666: Connection refused

Hi, I've configured properly nrpe client on a Debian server, and it works fine. After rebooting this server, it stops to connect to the nagios server. this is the error from the Nagios console: "(No output on stdout) stderr: connect to address ...". I did some tests and finally find that t...