# Alerts from baseline monitoring in AMS


Learn about AMS monitoring defaults. For more information, see [Monitoring and event management in AMS](monitoring.md).

The following table shows what is monitored, and the default alerting thresholds. You can change the alerting thresholds with a Management \$1 Other \$1 Other \$1 Update (ct-0xdawir96cy7k) RFC after determining what changes you want and subscribing to the relevant CloudWatch Amazon SNS topic. For information about creating and subscribing to topics, see [Subscribe to a Topic](https://docs.aws.amazon.com/sns/latest/dg/SubscribeTopic.html). For general information, see [Amazon SNS FAQs](https://aws.amazon.com/sns/faqs/). To be notified directly when alarms cross their threshold, in addition to AMS's standard alerting process, follow these instructions about how to overwrite alarm configurations, [Receiving alerts generated by AMS](sent-alert-views.md).

Amazon CloudWatch provides extended retention of metrics. For more information, see [CloudWatch Limits](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_limits.html).

**Note**  
AMS calibrates its baseline monitoring on a periodic basis. New accounts are always onboarded with the latest baseline monitoring and the table describes the baseline monitoring for an account that is newly onboarded. AMS updates the baseline monitoring in existing accounts on a periodic basis and you may experience a time lag before the updates are in place. For more information, see [Viewing the monitoring configuration for an AMS account](monitoring-view-config.md).

**Note**  
The EC2 instance alert `Non-root volume usage` is **DISABLED** by default. If you require alert generation based on this alarm, then you must enable it using the RFC Change Type [ct-0erkoad6uyvvg](https://docs.aws.amazon.com/managedservices/latest/ctref/management-monitoring-cloudwatch-enable-non-root-volumes-monitoring.html#management-monitoring-cloudwatch-enable-non-root-volumes-monitoring-info)


**Alerts from baseline monitoring**  
[\[See the AWS documentation website for more details\]](http://docs.aws.amazon.com/managedservices/latest/userguide/monitoring-default-metrics.html)

AMS takes pro-active actions (scaling the cluster) when this alert is triggered.

For information on remediation efforts, see [AMS automatic remediation of alerts](auto-remediation.md).

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