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123 lines
2.9 KiB
Markdown
123 lines
2.9 KiB
Markdown
---
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title: About the aws_vpc_subnet Resource
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---
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# aws_vpc_subnet
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Use the `aws_vpc_subnet` InSpec audit resource to test properties of a vpc subnet.
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To test properties of a single VPC subnet, use the `aws_vpc_subnet` resource.
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To test properties of all or a group of VPC subnets, use the `aws_vpc_subnets` resource.
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<br>
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## Syntax
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An `aws_vpc_subnet` resource block uses the parameter to select a VPC and a subnet in the VPC.
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describe aws_vpc_subnet(subnet_id: 'subnet-1234567') do
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it { should exist }
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its('cidr_block') { should eq '10.0.1.0/24' }
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end
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<br>
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## Resource Parameters
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This InSpec resource accepts the following parameters, which are used to search for the VPCs subnet.
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### subnet_id
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A string identifying the subnet that the VPC contains.
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# This will error if there is more than the default SG
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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it { should exist }
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end
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<br>
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## Matchers
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### assigning_ipv_6_address_on_creation
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Detects whether the network interface on the subnet accepts IPv6 addresses.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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it { should be_assigning_ipv_6_address_on_creation }
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end
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### available
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Provides the current state of the subnet.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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it { should be_available }
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end
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### default_for_az
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Detects if this is the default subnet for the Availability Zone.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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it { should be_default_for_az }
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end
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### exist
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The `exist` matcher indicates that a subnet exists for the specified vpc.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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it { should exist }
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end
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### mapping_public_ip_on_launch
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Provides the ID of the VPC the subnet is in.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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it { should be_mapping_public_ip_on_launch }
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end
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## Properties
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### availability_zone
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Provides the Availability Zone of the subnet.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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its('availability_zone') { should eq 'us-east-1c' }
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end
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### available_ip_address_count
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Provides the number of available IPv4 addresses on the subnet.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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its('available_ip_address_count') { should eq 251 }
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end
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### cidr_block
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Provides the block of ip addresses specified to the subnet.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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its('cidr_block') { should eq '10.0.1.0/24' }
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end
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### subnet_id
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Provides the ID of the Subnet.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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its('subnet_id') { should eq 'subnet-12345678' }
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end
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### vpc_id
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Provides the ID of the VPC the subnet is in.
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describe aws_vpc_subnet(subnet_id: 'subnet-12345678') do
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its('vpc_id') { should eq 'vpc-12345678' }
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end
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