This sample deploys a Lambda function that monitors IPv4 utilization for Amazon VPC Subnets and published the metrics to CloudWatch as custom metrics. The following metrics are published.
Gives a count of the total number of IPv4 addresses available in the subnet.
Gives a count of the total possible IPv4 addresses in the subnet CIDR (based on the prefix, not usable IPs).
Gives the count of IPv4 addresses current used including reserved IP addresses and IP addresses used by ENIs.
Shows the percentage (as a float, not decimal representation of the percentage) of IPv4 space unusable in the subnet.
To launch this sample, download the CloudFormation YAML file in the cloudformation directory and launch the template in each AWS region and account you wish to monitor subnet IPv4 utilization in.
See CONTRIBUTING for more information.
This library is licensed under the MIT-0 License. See the LICENSE file.