For our new ETK instance, we need to add our usual suite of NAGIOS monitoring rules.

This entails:

• Adding a NAGIOS user to one or more nodes of the new ETK cluster (just master? all nodes?)
• On the NAGIOS server, copy our existing rules templates from production, modify them to point at ETK
• Test that NAGIOS monitoring is working by triggering an alert
• Update documentation for configuring Nagios

This ticket is complete when the above steps have been completed