Connection Refused/Connection Refused by Host

[micropact]

It doesn't appear that they are. If I run nmap from the XI server it says that port 5666 is closed.

IPTables is not running on the Debian client.

If I run:
service nagios3 status then I get:
root@dc-vm-proxy-02:/var/log/nagios3# service nagios3 status

Nagios Core 3.2.3
Copyright (c) 2009-2010 Nagios Core Development Team and Community Contributors
Copyright (c) 1999-2009 Ethan Galstad
Last Modified: 10-03-2010
License: GPL

Website: http://www.nagios.org
Reading configuration data...
Read main config file okay...
Processing object config file '/etc/nagios3/commands.cfg'...
Processing object config directory '/etc/nagios-plugins/config'...
Processing object config file '/etc/nagios-plugins/config/flexlm.cfg'...
Processing object config file '/etc/nagios-plugins/config/games.cfg'...
Processing object config file '/etc/nagios-plugins/config/check_nrpe.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_storage.cfg'...
Processing object config file '/etc/nagios-plugins/config/pgsql.cfg'...
Processing object config file '/etc/nagios-plugins/config/real.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_cpfw.cfg'...
Processing object config file '/etc/nagios-plugins/config/hppjd.cfg'...
Processing object config file '/etc/nagios-plugins/config/dhcp.cfg'...
Processing object config file '/etc/nagios-plugins/config/nt.cfg'...
Processing object config file '/etc/nagios-plugins/config/ssh.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_env.cfg'...
Processing object config file '/etc/nagios-plugins/config/mysql.cfg'...
Processing object config file '/etc/nagios-plugins/config/telnet.cfg'...
Processing object config file '/etc/nagios-plugins/config/rpc-nfs.cfg'...
Processing object config file '/etc/nagios-plugins/config/disk.cfg'...
Processing object config file '/etc/nagios-plugins/config/procs.cfg'...
Processing object config file '/etc/nagios-plugins/config/ntp.cfg'...
Processing object config file '/etc/nagios-plugins/config/tcp_udp.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_int.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_process.cfg'...
Processing object config file '/etc/nagios-plugins/config/http.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_mem.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_win.cfg'...
Processing object config file '/etc/nagios-plugins/config/users.cfg'...
Processing object config file '/etc/nagios-plugins/config/breeze.cfg'...
Processing object config file '/etc/nagios-plugins/config/mail.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_vrrp.cfg'...
Processing object config file '/etc/nagios-plugins/config/radius.cfg'...
Processing object config file '/etc/nagios-plugins/config/ping.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp.cfg'...
Processing object config file '/etc/nagios-plugins/config/ftp.cfg'...
Processing object config file '/etc/nagios-plugins/config/dummy.cfg'...
Processing object config file '/etc/nagios-plugins/config/fping.cfg'...
Processing object config file '/etc/nagios-plugins/config/apt.cfg'...
Processing object config file '/etc/nagios-plugins/config/ldap.cfg'...
Processing object config file '/etc/nagios-plugins/config/mailq.cfg'...
Processing object config file '/etc/nagios-plugins/config/disk-smb.cfg'...
Processing object config file '/etc/nagios-plugins/config/news.cfg'...
Processing object config file '/etc/nagios-plugins/config/netware.cfg'...
Processing object config file '/etc/nagios-plugins/config/ifstatus.cfg'...
Processing object config file '/etc/nagios-plugins/config/dns.cfg'...
Processing object config file '/etc/nagios-plugins/config/snmp_load.cfg'...
Processing object config file '/etc/nagios-plugins/config/load.cfg'...
Processing object config file '/etc/nagios-plugins/config/mrtg.cfg'...
Processing object config directory '/etc/nagios3/conf.d'...
Processing object config file '/etc/nagios3/conf.d/services_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/contacts_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/timeperiods_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/extinfo_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/localhost_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/hostgroups_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/generic-service_nagios2.cfg'...
Processing object config file '/etc/nagios3/conf.d/generic-host_nagios2.cfg'...
Read object config files okay...

Running pre-flight check on configuration data...

Checking services...
Checked 6 services.
Checking hosts...
Checked 1 hosts.
Checking host groups...
Checked 4 host groups.
Checking service groups...
Checked 0 service groups.
Checking contacts...
Checked 1 contacts.
Checking contact groups...
Checked 1 contact groups.
Checking service escalations...
Checked 0 service escalations.
Checking service dependencies...
Checked 0 service dependencies.
Checking host escalations...
Checked 0 host escalations.
Checking host dependencies...
Checked 0 host dependencies.
Checking commands...
Checked 177 commands.
Checking time periods...
Checked 4 time periods.
Checking for circular paths between hosts...
Checking for circular host and service dependencies...
Checking global event handlers...
Checking obsessive compulsive processor commands...
Checking misc settings...

Total Warnings: 0
Total Errors: 0

[lmiltchev]

I've updated allowed_hosts in /etc/nagios/nrpe.cfg to contain the IP Address of the Nagios server and then restarted the daemon with the command:
/etc/init.d/nagios3 restart

I believe you need to do the following - run (on the remote host that is checked by nagios - not the nagios server):

Code: Select all

netstat -at | grep nrpe

see what's the pid, and kill it:

Code: Select all

kill -9 <pid>

then start nrpe by running:

Code: Select all

/etc/init.d/nagios-nrpe-server

[micropact]

OK, I'm now getting "Could not complete SSL handshake" errors.

I've followed the guide here:
http://assets.nagios.com/downloads/nagi ... utions.pdf

And recompiled the agent with SSL enabled and I'm still seeing the SSL handshake issue.

Nate

[micropact]

OK, I disabled SSL for the client on the XI server. Now I'm getting the following error:
CHECK_NRPE: Error receiving data from daemon.

I've done some reading online and it appears that is related to ownership on the folders that Nagios runs out of not being set to the correct user. Folders does the Nagios user need to be given access to?

[abrist]

And recompiled the agent with SSL enabled and I'm still seeing the SSL handshake issue.

This is usually happens when the nagios server ip is missing from the remote host's nrpe.cfg/xinetd configuration.