Nagios Support Forum

Cannot apply config after upgrade to 5.2.9
Error: Could not find any host matching '<servername>'(config file '/usr/local/nagios/etc/services/<servername>.cfg', starting on line 159)
Error: Failed to expand host list '<servername>' for service 'Uptime' (/usr/local/nagios/etc/services/<servername>..cfg:159)

What is the best way to resolve this?

The Nagios XI is running in a VMware 5.5.0 environment imported from an ova.
CentOS release 6.5 (Final)
Kernel 2.6.32-358.2.1.e16.x86_64 on an x86_64, (64 bit)

The server is online and is PINGable. But services are not working and they cannot be deleted. This server is running a NS client that was working before the upgrade

Can you run the following in an ssh session on your Nagios XI host.
Then go into XI and Apply Configuration.

What output is produced in the SSH session?

PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
.
PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
............................................................tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated

PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
............................................................
PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
............................................................tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
.
PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
..
PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
.
PROCESSED 0 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
APPLYING NAGIOSCORE CONFIG...
CMDLINE=cd /usr/local/nagiosxi/scripts && ./reconfigure_nagios.sh
URL: http://localhost/nagiosxi/includes/components/ccm/
CMDLINE
--2016-08-09 08:50:22-- http://localhost/nagiosxi/includes/components/ccm/
Connecting to 172.16.2.203:80... connected.
Proxy request sent, awaiting response... 504 Gateway Timeout
2016-08-09 08:50:22 ERROR 504: Gateway Timeout.

/usr/bin/wget --save-cookies nagiosql.cookies --keep-session-cookies http://localhost/nagiosxi/includes/components/ccm/ --no-check-certificate --post-data 'submit=Login&hidelog=true&loginSubmitted=true&username=nagiosxi&password=n@gweb' -O nagiosql.loginNAGIOSQL LOGIN FAILED!
OUTPUT=/usr/bin/wget --save-cookies nagiosql.cookies --keep-session-cookies http://localhost/nagiosxi/includes/components/ccm/ --no-check-certificate --post-data 'submit=Login&hidelog=true&loginSubmitted=true&username=nagiosxi&password=n@gweb' -O nagiosql.loginNAGIOSQL LOGIN FAILED!
RETURNCODE=2
......................................
PROCESSED 1 COMMANDS
tail: /usr/local/nagiosxi/var/cmdsubsys.log: file truncated
........................................

I made sure that the host is PINGable and Tested the client install.
The NSClinet++ (x64) Stable version is installed and working properly on the host
Line 159 in the host config file matches the entries for other similar hosts

It looks like your system is setup to use a proxy server and that is causing the issue.
Here is a link for you to look at for the changes to the XI server to function behind a proxy.
https://support.nagios.com/kb/article.php?id=147
Adding the no_proxy setting to the /etc/wgetrc file should work for you.

Thanks, that resolved the issue. Please close this.