AWS Cloud watch alarm, triggering autoscaling using multiple metrics

amazon-cloudwatch
Naween Ghimire picture Naween Ghimire · Feb 19, 2013 · Viewed 7.8k times · Source

I want to create a cloud watch alarm which triggers autoscaling based on more than one metric data. Since this is not natively supported by Cloud Watch ( Correct me if i am wrong ). I was wondering how to overcome this.

Can we get the data from different metrics, say CPUUtilization, NetworkIn, NetworkOut and then create a custom metrics using mon-put-data and enter these data to create a new metric based on which to trigger an autoscaling ?

Answer

Wal picture Wal · Feb 19, 2013

Yes .. Cloudwatch Alarms can only trigger on a single Cloudwatch Metric so you would need to publish your own 'aggregate' custom metric and alarm on that as you suggest yourself.

Here is a blog post describing using custom metrics to trigger autoscaling.

http://www.thatsgeeky.com/2012/01/autoscaling-with-custom-metrics/

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