CPU Usage Alert

Help
1

How would I create an alert rule for CPU Usage for networking equipment?

Let’s say I want an alert if the CPU Usage is equal to or above 40%.

2

Have a look at the sheet rules collection on GitHub
https://github.com/librenms/librenms/blob/master/misc/alert_rules.json

There is a rule for that.
An easier way is to check out the collection button in the UI where you can add rules from the collection to your installation.

3

Yes also in the docs. https://docs.librenms.org/#Alerting/

4

How to batch upload to the librenms?