Nagios Support Forum

I am new in nagios, after the installation, my nagios shows
CHECK_NRPE: Error receiving data from daemon && CHECK_NRPE: Received 0 bytes from daemon. Check the remote server logs for error messages.

Only ping works. I tried to find out the error log,

xinetd[9307]: FAIL: nrpe address from=218.5.81.133
host03 xinetd[3382]: START: nrpe pid=9307 from=218.5.81.133
xinetd[3382]: EXIT: nrpe status=0 pid=9307 duration=0(sec)

I tried to kill and restart nrpe on remote server, after the command: /usr/local/nagios/bin/nrpe -n -c /usr/local/nagios/etc/nrpe.cfg -d

This messages showed:

nrpe[7734]: Starting up daemon
nrpe[7734]: Network server bind failure (98: Address already in use)


Any ideas?

This line:
Leads me to believe that you need to add 218.5.81.133 to your allowed hosts (provided that your Nagios server is at 218.5.81.133). Depending on your distribution, the xinetd config could be in several places. If you're on a RHEL based system, its probably at /etc/xinetd.d/nrpe, if you could post your xinetd config for nrpe, I could help you a bit more.

Hi, thank you very much for your help. This is my xinet.d configure code

Hi, thank you very much for your help, please check the code, my OS is Centos 5.4

# default: on
# description: NRPE (Nagios Remote Plugin Executor)
service nrpe
{
flags = REUSE
socket_type = stream
port = 5666
wait = no
user = nagios
group = nagios
server = /usr/local/nagios/bin/nrpe
server_args = -c /usr/local/nagios/etc/nrpe.cfg --inetd
log_on_failure += USERID
disable = no
only_from = 127.0.0.1
}

When I configured the monitor via SSH, I got Remote command execution failed: stdin: is not a tty

I have no idea why this error happen