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philpennock/aws-free-ips.sh

Created February 4, 2022 16:53
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Report on AWS free IPs
Raw
aws-free-ips.sh
#!/bin/sh -eu
: "${VPC_ID:=}"
ShowVPCPrefix=''
format_subnets() {
jq -r '.Subnets[]
| "'"${ShowVPCPrefix}"'\(.AvailabilityZone)\t\(.SubnetId)\t\(.CidrBlock)\t\(.AvailableIpAddressCount)\t\(
if .Tags then .Tags[]|select(.Key=="Name")|.Value else "<none>" end)"' |
sort
}
if [ ".$VPC_ID" = ".all" ]; then
VPC_ID=''
ShowVPCPrefix='\(.VpcId)\t'
fi
if [ ".$VPC_ID" != "." ]; then
get_subnets() { aws ec2 describe-subnets --filters "Name=vpc-id,Values=[${VPC_ID}]"; }
else
get_subnets() { aws ec2 describe-subnets; }
fi
get_subnets | format_subnets
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