Cloud Watch:

AmazonCloud Watch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in real-time. You can use Cloud Watch to collect and track metrics, which are variables you can quantity for your incomes and applications.

The Cloud Watch home page repeatedly displays metrics about every AWS service you use. You can additionally create custom consoles to display metrics about your custom applications and display custom groups of metrics that you choose.

You can create alarms which watch metrics and send notifications or automatically make changes to the resources you are monitoring when a threshold is breached. For example, you can monitor the CPU usage and disk reads and writes of your Amazon EC2 instances and then use this data to determine whether you should launch additional instances to handle the increased load. You can also use this data to stop under-used instances to save money.

WithCloud Watch, you gain system-wide visibility into resource utilization, application performance, and operational health.

Related AWS Service:

The following services are used along with Amazon Cloud Watch:

Amazon Simple Notification Services(Amazon SNS):

ANS coordinates and manages the delivery or sending of messages to subscribing endpoints or clients. You use Amazon SNS with CloudWatch to send messages when an alarm threshold has been reached.

Amazon EC2  Auto Scaling:

AmazonEC2  auto-scaling enables you to automatically launch or terminate Amazon EC2 instances based on user-defined policies, health status checks, and schedules. You can use a Cloud Watch alarm with Amazon EC2 Auto Scaling to scale your EC2 instances based on demand.

AWS Cloud Trails:

 Aws cloud trails enable you to monitor the calls made to the Amazon Cloud Watch API for your account, including calls made by the AWS Management Console, AWS CLI, and other services. When Cloud Trail logging is turned on, Cloud Watch writes log files to the Amazon S3 bucket that you specified when you configured Cloud Trail.

AWS Identity and Access Management:

 Aws access management is a web service that helps you securely control access to AWS resources for your users. Use IAM to control who can use your AWS resources (authentication) and what resources they can use in which ways (authorization).

Monitoring the aws services health dashboard:

You can use Amazon Cloud Watch Events to detect and react to changes in the status of AWS Personal Health Dashboard (AWS Health) events. Then, based on the rules that you create, Cloud Watch Events invokes one or more target actions when an event matches the values that you specify in a rule. Depending on the type of event, you can send notifications, capture event information, take corrective action, initiate events, or take other actions.

Create a Cloud Watch Events rule in each Region that you use. AWS Health events for a particular The region is published to Cloud Watch Events in that Region.

You can select the following types of targets when using CloudWatch Events as a part of your AWS Health workflow:

·         AWS Lambda functions

·         Kinesis streams

·         Amazon SQS queues

·         Built-in targets (CloudWatch alarm actions)

·         Amazon SNS topics

The following are some use cases:

·         Use a Lambda function to pass a notification to a Slack channel when an event occurs.

·         Send custom text or SMS notifications with Amazon SNS when an AWS Health event happens by using Lambda and CloudWatch Events.

Automating Actions for EC2  Instances:

You can automate actions in response to newly scheduled events for your EC2 instances. For example, you can create Cloud Watch Events rules for EC2 scheduled events generated by the AWS Health service. These rules can then trigger targets, such as AWS Systems Manager Automation documents, to automate actions.

For example, when an Amazon EC2 instance retirement event is scheduled for an EBS-backed EC2 instance, you can automate the stop and start of the instance so that you don't have to perform these actions manually.