Creating CloudWatch alarms to monitor Amazon Aurora
You can create a CloudWatch alarm that sends an Amazon SNS message when the alarm changes state. An alarm watches a single metric over a time period that you specify. The alarm can also perform one or more actions based on the value of the metric relative to a given threshold over a number of time periods. The action is a notification sent to an Amazon SNS topic or Amazon EC2 Auto Scaling policy.
Alarms invoke actions for sustained state changes only. CloudWatch alarms don't invoke actions simply because they are in a particular state. The state must have changed and have been maintained for a specified number of time periods.
Note
For Aurora, use WRITER or READER role metrics to set up alarms instead of relying on metrics for specific DB instances. Aurora DB instance roles can change roles
over time. You can find these role-based metrics in the CloudWatch console.
Aurora Auto Scaling automatically sets alarms based on READER role metrics. For more information about Aurora Auto Scaling, see Using Amazon Aurora Auto Scaling with Aurora Replicas.
You can use the DB_PERF_INSIGHTS metric math function in the CloudWatch console to query Amazon RDS for Performance Insights counter metrics. The DB_PERF_INSIGHTS function also includes the DBLoad metric at sub-minute intervals. You can set CloudWatch alarms on these metrics.
For more details on how to create an alarm, see Create an alarm on Performance Insights counter metrics from an Amazon database.
To set an alarm using the Amazon CLI
-
Call
put-metric-alarm. For more information, see Amazon CLI Command Reference.
To set an alarm using the CloudWatch API
-
Call
PutMetricAlarm. For more information, see Amazon CloudWatch API Reference
For more information about setting up Amazon SNS topics and creating alarms, see Using Amazon CloudWatch alarms.