Resource health metrics and alarms

What are metrics?

Lightsail reports metric data for instances, databases, and load balancers. Some metrics include your instance’s CPU utilization percentage, the amount of inbound and outbound network traffic, system and instance error counts, database disk queue depth, database free storage space, load balancer error counts, load balancer response times, and more. Metrics allow you to monitor and maintain the reliability, availability, and performance of your resources. Monitor and collect metric data from your resources regularly so that you can more readily debug a multi-point failure, if one occurs. For more information, see Resource metrics.

What are alarms?

You can create an alarm in Lightsail that watches a metric for your instances, databases, and load balancers. The alarm can be configured to notify you based on the value of the metric relative to a threshold that you specify. For more information, see Alarms.

Notifications can be a banner displayed in the Lightsail console, an email sent to your email address, and an SMS text message sent to your mobile phone number. For more information about notifications, see Notifications.

How many alarms can I add?

You can configure two alarms for each metric that is available for instances, databases, and load balancers. For more information, see Alarms.