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Guides - Configure Email Alerts for Resource Usage on Compute Instances
Linux virtual machines equipped with a tailored set of resources designed to run any cloud-based workload.
The Cloud Manager allow you to configure email alerts that automatically notify you through email if certain performance thresholds are reached, including:
- CPU Usage
- Disk IO Rate
- Incoming Traffic
- Outbound Traffic
- Transfer Quota
When setting the threshold for CPU usage, the maximum value can be calculated by multiplying the total number of available CPUs by 100. For example, this means that if an instance has 4 CPUs, the maximum threshold is 400%. Therefore, if you wish to be notified of relative CPU usage greater than 80% over 2 hours, you would set the Usage Threshold value to 320%.
To turn on and customize the alerts:
Log in to the Cloud Manager.
Click the Linodes link in the sidebar.
Select your Compute Instance. The instance’s details page appears.
Click the Settings tab. The Notification Thresholds panel appears, as shown below.
To enable an email alert, toggle the appropriate switch.
To configure the threshold for an alert, set a value in the threshold text field.
Click Save to save the email alert thresholds.
You have successfully configured email alerts in the Cloud Manager.
If you receive an email threshold alert from the Cloud Manager, do not be alarmed. It does not mean there is anything necessarily wrong with your instance.
For example, the instance may be operating above its normal threshold if it is performing intensive tasks such as compiling software (CPU, IO, or both) or if a major website just linked to your blog (increased traffic).
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