Nagios Support Forum

All of the sudden, any time I try to write changes to Nagios, it says:

Warning: configuration file is out of date!

From there, it won't apply any changes, and is very frustrating. It had been working wonderfully for a while.

Any help would be appreciated.

First, likely unrelated, but hey: Is the time/date correct on the server's clock?
Second: Is there anything interesting in your logs that might show what the first thing to fail was?

What happens when you follow these steps?:

• Login to Core Configuration Manager
  Click Tools - Write Config Files
  Click the Go button next to Write monitoring data
  This should succeed or fail, either way it tells you on the screen the results
  Try the other Go buttons

Post the results here, this should provide some more information.

Here's what it says for the files... I'm not sure what would have changed, or how to correct that.

Write host configurations ...
Configuration file successfully written!

Write service configurations ...
Configuration file successfully written!

Write hostgroups.cfg ...
Cannot open/overwrite the configuration file (check the permissions)!
Write servicegroups.cfg ...
Cannot open/overwrite the configuration file (check the permissions)!
Write hosttemplates.cfg ...
Cannot open/overwrite the configuration file (check the permissions)!
Write servicetemplates.cfg ...
Cannot open/overwrite the configuration file (check the permissions)!

turns out I did know what to do. I ran the following command:

chown apache.nagios /usr/local/nagios/etc/*.cfg

then restarted the httpd service and all is good again...