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139 lines
3.5 KiB
Text
139 lines
3.5 KiB
Text
---
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title: About the aws_vpc Resource
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platform: aws
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---
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# aws\_vpc
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Use the `aws_vpc` Chef InSpec audit resource to test properties of a single AWS Virtual Private Cloud (VPC).
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To test properties of all or multiple VPCs, use the `aws_vpcs` resource.
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A VPC is a networking construct that provides an isolated environment. A VPC is contained in a geographic region, but spans availability zones in that region. A VPC may have multiple subnets, internet gateways, and other networking resources. Computing resources--such as EC2 instances--reside on subnets within the VPC.
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Each VPC is uniquely identified by its VPC ID. In addition, each VPC has a non-unique CIDR IP Address range (such as 10.0.0.0/16) which it manages.
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Every AWS account has at least one VPC, the "default" VPC, in every region.
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<br>
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## Availability
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### Installation
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This resource is distributed along with Chef InSpec itself. You can use it automatically.
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### Version
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This resource first became available in v2.0.16 of InSpec.
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## Syntax
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An `aws_vpc` resource block identifies a VPC by id. If no VPC ID is provided, the default VPC is used.
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# Find the default VPC
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describe aws_vpc do
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it { should exist }
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end
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# Find a VPC by ID
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describe aws_vpc('vpc-12345678987654321') do
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it { should exist }
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end
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# Hash syntax for ID
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describe aws_vpc(vpc_id: 'vpc-12345678') do
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it { should exist }
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end
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<br>
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## Examples
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The following examples show how to use this Chef InSpec audit resource.
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### Test that a VPC does not exist
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describe aws_vpc('vpc-87654321') do
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it { should_not exist }
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end
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describe aws_vpc('vpc-abcd123454321dcba') do
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it { should_not exist }
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end
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### Test the CIDR of a named VPC
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describe aws_vpc('vpc-87654321') do
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its('cidr_block') { should cmp '10.0.0.0/16' }
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end
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<br>
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## Properties
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* `cidr_block`, `dhcp_options_id`, `state`, `vpc_id`, `instance_tenancy`
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<br>
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## Property Examples
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### cidr\_block
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The IPv4 address range that is managed by the VPC.
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describe aws_vpc('vpc-87654321') do
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its('cidr_block') { should cmp '10.0.0.0/16' }
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end
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### dhcp\_options\_id
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The ID of the set of DHCP options associated with the VPC (or `default` if the default options are associated with the VPC).
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describe aws_vpc do
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its ('dhcp_options_id') { should eq 'dopt-a94671d0' }
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end
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### instance\_tenancy
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The allowed tenancy of instances launched into the VPC.
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describe aws_vpc do
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its ('instance_tenancy') { should eq 'default' }
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end
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### state
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The state of the VPC (`pending` | `available`).
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describe aws_vpc do
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its ('state') { should eq 'available' }
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end
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### vpc\_id
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The ID of the VPC.
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describe aws_vpc do
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its('vpc_id') { should eq 'vpc-87654321' }
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end
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<br>
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## Matchers
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This Chef InSpec audit resource has the following special matchers. For a full list of available matchers, please visit our [matchers page](https://www.inspec.io/docs/reference/matchers/).
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### be\_default
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The test will pass if the identified VPC is the default VPC for the region.
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describe aws_vpc('vpc-87654321') do
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it { should be_default }
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end
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## AWS Permissions
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Your [Principal](https://docs.aws.amazon.com/IAM/latest/UserGuide/intro-structure.html#intro-structure-principal) will need the `ec2:DescribeVpcs` action with Effect set to Allow.
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You can find detailed documentation at [Actions, Resources, and Condition Keys for Amazon EC2](https://docs.aws.amazon.com/IAM/latest/UserGuide/list_amazonec2.html).
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