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Showing content from https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/MonitoringOverview.html below:

Monitoring tools for Amazon RDS

Monitoring is an important part of maintaining the reliability, availability, and performance of Amazon RDS and your other AWS solutions. AWS provides various monitoring tools to watch Amazon RDS, report when something is wrong, and take automatic actions when appropriate.

We recommend that you automate monitoring tasks as much as possible.

You can use the following automated tools to watch Amazon RDS and report when something is wrong:

• Amazon RDS instance status — View details about the current status of your instance by using the Amazon RDS console, the AWS CLI, or the RDS API.

• Amazon RDS recommendations — Respond to automated recommendations for database resources, such as DB instances, read replicas, and DB parameter groups. For more information, see Recommendations from Amazon RDS.

Amazon RDS integrates with Amazon CloudWatch for additional monitoring capabilities.

• Amazon CloudWatch – This service monitors your AWS resources and the applications you run on AWS in real time. You can use the following Amazon CloudWatch features with Amazon RDS:

  • Amazon CloudWatch metrics – Amazon RDS automatically sends metrics to CloudWatch every minute for each active database. You don't get additional charges for Amazon RDS metrics in CloudWatch. For more information, see Monitoring Amazon RDS metrics with Amazon CloudWatch.

  • Amazon CloudWatch alarms – You can watch a single Amazon RDS metric over a specific time period. You can then perform one or more actions based on the value of the metric relative to a threshold that you set. For more information, see Monitoring Amazon RDS metrics with Amazon CloudWatch.

You can use the following automated tools to monitor Amazon RDS performance:

The following AWS services are integrated with Amazon RDS:

• Amazon EventBridge is a serverless event bus service that makes it easy to connect your applications with data from a variety of sources. For more information, see Monitoring Amazon RDS events.

• Amazon CloudWatch Logs lets you monitor, store, and access your log files from Amazon RDS instances, CloudTrail, and other sources. For more information, see Monitoring Amazon RDS log files.

• AWS CloudTrail captures API calls and related events made by or on behalf of your AWS account and delivers the log files to an Amazon S3 bucket that you specify. For more information, see Monitoring Amazon RDS API calls in AWS CloudTrail.

• Database Activity Streams is an Amazon RDS feature that provides a near-real-time stream of the activity in your Oracle DB instance. For more information, see Monitoring Amazon RDS with Database Activity Streams.

You need to manually monitor those items that the CloudWatch alarms don't cover. The Amazon RDS, CloudWatch, AWS Trusted Advisor and other AWS console dashboards provide an at-a-glance view of the state of your AWS environment. We recommend that you also check the log files on your DB instance.

• From the Amazon RDS console, you can monitor the following items for your resources:

  • The number of connections to a DB instance

  • The amount of read and write operations to a DB instance

  • The amount of storage that a DB instance is currently using

  • The amount of memory and CPU being used for a DB instance

  • The amount of network traffic to and from a DB instance

• From the Trusted Advisor dashboard, you can review the following cost optimization, security, fault tolerance, and performance improvement checks:

  • Amazon RDS Idle DB Instances

  • Amazon RDS Security Group Access Risk

  • Amazon RDS Backups

  • Amazon RDS Multi-AZ

  For more information on these checks, see Trusted Advisor best practices (checks).

• CloudWatch home page shows:

  • Current alarms and status

  • Graphs of alarms and resources

  • Service health status

  In addition, you can use CloudWatch to do the following:

  • Create customized dashboards to monitor the services that you care about.

  • Graph metric data to troubleshoot issues and discover trends.

  • Search and browse all your AWS resource metrics.

  • Create and edit alarms to be notified of problems.

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