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csereno/AWSSubnetCIDR.yaml

Created June 17, 2020 04:01
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Specifying the CIDR for an AWS subnet with an allowed pattern
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AWSSubnetCIDR.yaml
SubnetCIDR:
AllowedPattern: ^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])(\/(1[6-9]|2[0-8]))$
ConstraintDescription: CIDR block parameter must be in the form x.x.x.x/16-28
Default: 10.0.0.0/20
Description: CIDR block for subnet
Type: String
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