<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7654.12"> <TITLE>added host not appearing in web interface</TITLE> </HEAD> <BODY>  Hi there -- We are running Nagios 3.1.2 with the NRPE 2.12 client on our systems. We recently installed the VirtualBox application on one of our monitored systems, and have Ubuntu 10.04 LTS 64-bit as the guest operating system. We want to monitor the disk usage, processes, mysql server, and rsyslogd daemon on the virtual machine, so the NRPE client was installed and configured to start on system boot. After that was done, the appropriate changes were made to the various config files on the Nagios server. The virtual machine and Nagios server were rebooted, in that order, after the changes were made. When going through the web interface on the Nagios server, the virtual host does not appear listed in any of the pages. I confirmed the nrpe daemon was operational on the client, and also verified that port 5666 was open, and the firewall on the client was deactivated. The nrpe daemon is run via the /etc/rc.local file using the following command syntax: /usr/local/nrpe/bin/nrpe -n -c /usr/local/nrpe/etc/nrpe.cfg -d I checked the Nagios server, and confirmed the virtual host was listed in the /etc/hosts as well as the nagios configuration files. The nslookup command, run on server and client, confirmed the presence of the virtual host in the DNS database. What would cause the client not to appear in the Nagios web interface, and how can I correct it? Thanks. The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.</BODY> </HTML>