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---
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layout: "aws"
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page_title: "AWS: aws_vpc"
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sidebar_current: "docs-aws-datasource-vpc-x"
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description: |-
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Provides details about a specific VPC
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---
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# aws\_vpc
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`aws_vpc` provides details about a specific VPC.
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This resource can prove useful when a module accepts a vpc id as
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an input variable and needs to, for example, determine the CIDR block of that
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VPC.
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## Example Usage
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The following example shows how one might accept a VPC id as a variable
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and use this data source to obtain the data necessary to create a subnet
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within it.
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2017-04-07 17:54:28 +02:00
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```hcl
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variable "vpc_id" {}
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data "aws_vpc" "selected" {
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id = "${var.vpc_id}"
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}
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resource "aws_subnet" "example" {
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vpc_id = "${data.aws_vpc.selected.id}"
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availability_zone = "us-west-2a"
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cidr_block = "${cidrsubnet(data.aws_vpc.selected.cidr_block, 4, 1)}"
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}
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```
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## Argument Reference
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The arguments of this data source act as filters for querying the available
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VPCs in the current region. The given filters must match exactly one
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VPC whose data will be exported as attributes.
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* `cidr_block` - (Optional) The cidr block of the desired VPC.
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* `dhcp_options_id` - (Optional) The DHCP options id of the desired VPC.
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* `default` - (Optional) Boolean constraint on whether the desired VPC is
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the default VPC for the region.
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* `filter` - (Optional) Custom filter block as described below.
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* `id` - (Optional) The id of the specific VPC to retrieve.
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* `state` - (Optional) The current state of the desired VPC.
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Can be either `"pending"` or `"available"`.
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* `tags` - (Optional) A mapping of tags, each pair of which must exactly match
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a pair on the desired VPC.
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More complex filters can be expressed using one or more `filter` sub-blocks,
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which take the following arguments:
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* `name` - (Required) The name of the field to filter by, as defined by
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[the underlying AWS API](http://docs.aws.amazon.com/AWSEC2/latest/APIReference/API_DescribeVpcs.html).
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* `values` - (Required) Set of values that are accepted for the given field.
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A VPC will be selected if any one of the given values matches.
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## Attributes Reference
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All of the argument attributes except `filter` blocks are also exported as
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result attributes. This data source will complete the data by populating
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any fields that are not included in the configuration with the data for
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the selected VPC.
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The following attribute is additionally exported:
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* `instance_tenancy` - The allowed tenancy of instances launched into the
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selected VPC. May be any of `"default"`, `"dedicated"`, or `"host"`.
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* `ipv6_association_id` - The association ID for the IPv6 CIDR block.
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* `ipv6_cidr_block` - The IPv6 CIDR block.
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