Alerting within a computer monitoring system is the ability to send notifications when certain metrics fall outside of expected ranges.

For example, you can set up an alert that is triggered when a Droplet’s CPU usage exceeds 90%.

The alerting can be for a certain metric such as:

  • CPU: The percentage of total CPU used on the Droplet, out of 100%.
  • Bandwidth Inbound: The amount of incoming traffic to the Droplet, in Mbps.
  • Bandwidth Outbound: The amount of outgoing traffic from the Droplet, in Mbps.
  • Disk Read: The read activity for the Droplet’s disks, in MB/s.
  • Disk Write: The write activity for the Droplet’s disks, in MB/s.
  • Memory Utilization: The percentage of total memory being used, out of 100%.
  • Disk Utilization: The percentage of the root disk storage being used, out of 100%.

You can specify a threshold as a percentage of total available capacity or usage rate depending on the selected metric.

To learn more about how to set up an alert, see How to Set Up Monitoring Alerts.

Alerting Articles

Create an Uptime alert to receive notifications via email and Slack when a check is failing.
Create an Uptime check to start monitoring an endpoint’s latency, uptime, and SSL certificate.
Destroy an alert to stop monitoring a metric and receiving notifications for it.