AWS-CloudWatch

• CloudWatch focuses on the activity of AWS services and resources, reporting on their health and performance.
• It is a monitoring service for AWS cloud resources and the applications you run on AWS.
• You can use it to collect and track metrics, collect and monitor log files, set alarms, and automatically react to changes in your AWS resources.

1. Standard Monitoring = 5 minutes
2. Detailed Monitoring = 1 Minutes

• It displays the metrics automatically about every AWS service that you choose.

• You can create the dashboard to display the metrics about your custom application and also display the metrics of custom collections that you choose.

• You can also create an alarm to watch metrics. For example, you can monitor CPU usage, disk read and disk writes of Amazon EC2 instance to determine whether the additional EC2 instances are required to handle the load or not. It can also be used to stop the instance to save money.

Following are the terms associated with CloudWatch:

• Dashboards: It is used to create dashboards to show what is happening with your AWS environment.

• Alarms: It allows you to set alarms to notify you whenever a particular threshold is hit.

• Logs: It logs help you to aggregate, monitor, and store logs.

• Events: It help you to respond to state changes to your AWS resources.