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:Monitoring and alerting

Last Updated:Dec 03, 2025

The performance metrics of an RDS Custom instance are essential for routine maintenance and troubleshooting. RDS Custom provides a wide range of performance monitoring metrics to help you promptly identify instance abnormalities.

Procedure

  1. Log on to the RDS console. In the navigation pane on the left, click Instances, and then select a region at the top of the page.

  2. Click the instance ID to go to the product page of the instance.

  3. In the navigation pane on the left, click Monitoring and Alerting.

  4. Select a time range and a monitoring frequency, and click Search to view the performance metric trends of the instance.

    Metric

    Description

    Unit

    CPU utilization

    The CPU utilization of the instance.

    %

    Inbound Internet traffic

    The inbound traffic to the instance over the Internet.

    Byte

    Outbound Internet traffic

    The outbound traffic from the instance over the Internet.

    Byte

    Inbound traffic over internal network

    The inbound traffic to the instance over the internal network.

    Byte

    Outbound traffic over internal network

    The outbound traffic from the instance over the internal network.

    Byte

    Disk usage

    The disk usage of the instance.

    %

    Connections

    The number of connections to the instance.

    Count

    Memory usage

    The memory usage of the instance.

    %

Related API operations

To view the monitoring data of an RDS Custom instance, call the DescribeRCMetricList operation.

References

For more information, see Introduction to RDS Custom.