Nagios Support Forum

From the client not able to be monitored connecting to Nagios server I get an: telnet: Unable to connect to remote host: Connection refused

From the ones that operate I can telnet.

Don't know if you are getting my PM, it's still in Outbox. I don't know if it can, how can I check or that on the Nagios server? It can't reach it, as I get error message when I try: Connection refused by host. No worries about 3002, I killed it, it's on: nagios 5182 1 0 15:41 ? 00:00:00 nrpe -c /et...

I attached the syslog by PM.

log_facility=daemon pid_file=/var/run/nagios/nrpe.pid server_port=5666 nrpe_user=nagios nrpe_group=nagios allowed_hosts=127.0.0.1, monitor.net.x-xxx.xx dont_blame_nrpe=0 debug=1 command_timeout=60 connection_timeout=300 # webchecker for external websites include=/etc/nagios/nrpe_local.cfg include_d...

Ok, on this remote server can you see if any of the requests are getting there by looking at the system log? with a command such as grep nrpe /var/log/messages Also, is this nrpe daemon running under initd, systemd, or xinetd? And is the port you are checking somehow mapped to port 5666 on this rem...

scottwilkerson wrote:Is the client a Linux or Windows host?

We have both, this in particular I'm testing with is a Linux client, it's on the same IP as the Core server, but on a different port.

npre.cfg has it as an allowed host already:

He, of course on the client...

I have neither of these files. I have nagios.cfg and cgi.cfg[.

Should I add an entry in nagios.cfg as:

allowed_hosts=127.0.0.1,192.168.0.140

If I add one IP would I need to add all clients that are monitored, those with no VPN as well?

I have a server which I now run through a VPN, ever since, it has lost the connection with the Nagios server. root@monitor:/usr/lib/nagios/plugins$ ./check_nrpe -H 89.160.16.2 -p2222 Connection refused by host I don't know where to begin to allow the host to be able to be checked by the nagios serve...