AWS Security Cookbook

How it works...

In this recipe, we selected Event Pattern and set the Service Name to EC2 and Event Type to EC2 Instance State-change Notification to match EC2 events whose state gets changed. Instead of an event pattern, we can select Schedule to invoke our targets on a schedule, just like we can with cron jobs.

We configured to notify any state change. We can also select a specific state, such as pending, running, shutting-down, stopped, stopping, or terminated. We also configured to apply this rule to all the instances within our account. Instead of doing this, we can select a specific EC2 instance. We selected our SNS topic as the target. When we configure a target, CloudWatch Events will provide necessary permissions for targets so that ...