Grant privileges and roles needed to read Metricbeat data from Kibana

Kibana users typically need to view dashboards and visualizations that contain Metricbeat data. These users might also need to create and edit dashboards and visualizations.

To grant users the required privileges:

1. Create a reader role, called something like metricbeat_reader, that has the following privilege:

   Type	Privilege	Purpose
   Index	read on metricbeat-* indices	Read data indexed by Metricbeat
   Spaces	Read or All on Dashboards, Visualize, and Discover	Allow the user to view, edit, and create dashboards, as well as browse data.
   Spaces	Read or All on Kibana Metrics	Allow the use of Kibana Metrics

2. Assign the reader role, along with the following built-in roles, to users who need to read Metricbeat data:

   Role	Purpose
   monitoring_user	Allow users to monitor the health of Metricbeat itself. Only assign this role to users who manage Metricbeat.