Nagios Support Forum

Post the output of the command and check the service perfdata info under the perfdata dir, specifically the timestamps on the rrd and xml files. If the files are old remove them.

Notification options are under the admin tab.

It might be a good idea to set this in resources.cfg in the future.
You could also set the C-string in cfg files, copy them to the import dir and run a reconfig to import them.

Locate the perfdata dir on the nagios host and check the timestamp on the rrd and xml files for the services that aren't graphing. If something changed about the service, like the format of the perfdata, the system can get mad and stop updating the files. Move or remove rrd files that aren't being u...

You can add it to the nsclient.ini and/or see if nsclient has an internal service check.

Check the status output for the service and the logs.

In the meantime you may want to set a cron to restart logstash.
In my experience logstash was pretty reliable BTW.

Check the status from the shell after starting via the web page.
A guess is that the web user has to sudo to start the service and it's disabled.

Silly question but what about IP addresses do you want to manage?

How to set it up is in Dell's documentation. You just set the nagios hosts as a destination, etc. You can probably figure it out w/o docs.