Different States Of Metric Alarm
There are three possible states for the metric alarm
- OK: The measurement or expression falls within the specified range.
- Alarm: The measurement or expression is outside the set limit.
- Insufficient: The metric is not accessible, the alarm has just started, or there is not enough data to allow the metric to identify the alarm state.
You can set up a CloudWatch alert to keep track of your instances’ CloudWatch metrics. If you choose a threshold, CloudWatch will notify you immediately when the measure hits that level. Using the more complex options offered by the CloudWatch console or the Amazon EC2 console, you can set a CloudWatch alarm.
How to Create Alarm to Terminate an EC2 Instance using the Amazon CloudWatch?
Amazon CloudWatch Alarms are a feature of AWS(Amazon Web Services) that allows you to monitor various metrics and take automated actions based on the conditions, you define. CloudWatch Alarms help you keep track of the health and performance of your AWS resources and Applications.