Login added to serverrole

Install metric...

Metrics install automatically if you have Redgate Monitor installed.

If you are using Redgate’s SQL Server monitoring tool, Redgate Monitor, you can instantly install and run this metric on your servers.

This custom metric queries the default trace to find events related to Server roles being altered

Metric definition

Name

Login added to serverrole

Description

This custom metric queries the default trace to find events related to Server roles being altered

The T-SQL query that will collect data

Instances to collect from

Select all

Databases to collect from

Master

Collection frequency

60

Use collected or calculated values

Leave the Use a calculated rate of change between collections check box unchecked

Metric collection

Enabled

Alert definition

You could add an alert once the baseline for your environment has been established.