Nagios Support Forum

I am using a proxy. I have been using a proxy the whole time and I haven't had an issue up until this point.

Some people have been able to use Nagios XI with a proxy successfully. There are some general instructions on how to set it up in the link I placed in my previous post. However, according to our policy:

We do not officially support Nagios XI when you install and use proxy software that restricts traffic to or from the Nagios XI server.

So if you are using a proxy, you would have to find a way to make it work with Nagios XI on your own. You have to configure properly yum and wget, and local host must resolve to local host:

the Nagios XI code makes several internal HTTP calls to the local Nagios XI server to import configuration data, apply configuration changes, process AJAX requests, etc.