I would highly suggest following this documentation for installing Nagios Core:
https://support.nagios.com/kb/article/n ... ource.html

Here's the official documentation on monitoring Linux machines with Nagios Core: https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/4/en/monitoring-linux.html You don't actually install Nagios Core on each machine you want to monitor. You typically locate the Nagios Core service centrall...

Integrating SNMP traps with Nagios Core/XI is going to involve some sort of translation from "SNMP OID -> Nagios Check Result". I believe what you're looking for are " passive checks ", which skip that translation step completely and just pushes Nagios check results directly. Tha...

Which version of the check_wmi_plus.pl plugin are you using? Can you run the check_wmi_plus.pl plugin from the command-line with the debug flag enabled and share the output? -d Enable debug. Use this to see a lot more of what is going on including the exact WMI Query and results. User/passwords shou...

Could you clarify which product you're using? You've posted in the Nagios XI section, but the URLs you reference are for Nagios Core . Could you share the relevant Apache configurations you're using to make this change? Assuming Nagios Core, the only major difference I see in the Map and Trends link...

What steps/documentation did you use to install Nagios Core? Here is the official documentation, which is recommended: https://support.nagios.com/kb/article/nagios-core-installing-nagios-core-from-source.html I'd switch the Options directive under the /useraccount/nagios/sbin/ Directory from All to ...

There are a multitude of options available for monitoring Linux machines. If you're not picky, I would suggest following the "Getting Started" guide for NCPA, which is a monitoring agent that Nagios Core can talk to: https://www.nagios.org/ncpa/getting-started.php That documentation has st...

What method did you use to install Nagios Core? I would suggest installing Nagios Core via the official documentation: https://support.nagios.com/kb/article/nagios-core-installing-nagios-core-from-source-96.html I can pretty much guarantee Nagios Core's front-end is going to bump heads with cPanel a...

After upgrade to 6.7 the existing Plugin doesn't work. Can you provide a full copy of this "existing plugin"? Also, any error output this "existing plugin" is currently producing -- preferably with "verbose" output enabled if available. box293_check_vmware is the go-to...

I'll plug Nagios XI because it handles multi-tenancy in a much better way: https://assets.nagios.com/downloads/nagiosxi/docs/Understanding-Multi-Tenancy-Within-Nagios-XI.pdf Here's how Nagios Core handles multi-tenancy: https://assets.nagios.com/downloads/nagioscore/docs/nagioscore/4/en/cgiauth.html...