Nagios Connection refused by host

Service Side (192.168.2.110) Unable to access client's Nrpe:

[Email protected] ~]#/usr/local/nagios/libexec/check_nrpe-h 127.0.0.1

NRPE v2.12

[Email protected] ~]#/usr/local/nagios/libexec/check_nrpe-h 192.168.2.120

Connection refused by host

Client (192.168.2.120):

[[email protected] etc]# lsof-i: 5666

COMMAND PID USER FD TYPE DEVICE size/off NODE NAME

Nrpe 18703 Nagios 4u IPv4 85766 0t0 TCP localhost : 5666 (LISTEN) #只在本地有效, all external IPs cannot be accessed

[Email protected] etc]# vim nrpe.conf +44

Comment out the following:

#server_address =127.0.0.1

[Email protected] etc]# Pkill Nrpe

[Email protected] etc]#/usr/local/nagios/bin/nrpe-c/usr/local/nagios/etc/nrpe.cfg-d

[[email protected] etc]# lsof-i: 5666

COMMAND PID USER FD TYPE DEVICE size/off NODE NAME

Nrpe 18766 Nagios 4u IPv4 89670 0t0 TCP *:5666 (LISTEN)

This is going to be a normal visit.

Service-Side access:

[Email protected] etc]#/usr/local/nagios/libexec/check_nrpe-h 192.168.2.120-c check_iostat

IOSTAT ok-user 0.28 Nice 0.00 sys 0.30 iowait 0.31 idle 0.00 | iowait=0.31%;; idle=0.00%;; user=0.28%;; nice=0.00%;; sys=0.30%;;

This article from "Nanshengchang Technology blog" blog, declined reprint!

Nagios Connection refused by host