terraform-aws-transit-gateway

Repo provides module to create (or not, if already existing) transit gateway(s), handle attachments, and routes, and more

Requirements

Name	Version
terraform	>= 1.3
aws	>= 5.30.0
random	>= 3.0.0

Providers

Name	Version
aws	>= 5.30.0
random	>= 3.0.0

Modules

Name	Source	Version
subnet_route	./modules/subnet_route	n/a
transit_gateway_route	./modules/transit_gateway_route	n/a

Resources

Name	Type
aws_ec2_transit_gateway.this	resource
aws_ec2_transit_gateway_route_table.this	resource
aws_ec2_transit_gateway_route_table_association.this	resource
aws_ec2_transit_gateway_route_table_propagation.this	resource
aws_ec2_transit_gateway_vpc_attachment.this	resource
random_id.this	resource
aws_ec2_transit_gateway.this	data source
aws_vpc.this	data source

Inputs

Name	Description	Type	Default	Required
auto_accept_shared_attachments	Whether resource attachment requests are automatically accepted. Valid values: disable, enable. Default value: disable	string	"disable"	no
config	Configuration for VPC attachments, Transit Gateway routes, and subnet routes	map(object({ vpc_name = string vpc_id = string vpc_cidr = string subnet_ids = set(string) subnet_route_table_ids = set(string) route_to = set(string) route_to_cidr_blocks = set(string) transit_gateway_vpc_attachment_id = string transit_gateway_vpc_attachment_name_tag = string static_routes = set(object({ blackhole = bool destination_cidr_block = string route_transit_gateway_attachment_id = string })) }))	null	no
create_transit_gateway	Whether to create a Transit Gateway. If set to false, an existing Transit Gateway ID must be provided in the variable existing_transit_gateway_id	bool	true	no
create_transit_gateway_propagation	Whether to enable Transit Gateway propagation on the specified route table and attachment	bool	true	no
create_transit_gateway_route_table	Whether to create a Transit Gateway Route Table. If set to false, an existing Transit Gateway Route Table ID must be provided in the variable existing_transit_gateway_route_table_id	bool	true	no
create_transit_gateway_route_table_association	Whether to create Transit Gateway Route Table association	bool	true	no
create_transit_gateway_vpc_attachment	Whether to create Transit Gateway VPC Attachments	bool	true	no
default_route_table_association	Whether resource attachments are automatically associated with the default association route table. Valid values: disable, enable. Default value: enable	string	"disable"	no
default_route_table_propagation	Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: disable, enable. Default value: disable	string	"disable"	no
dns_support	Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: disable, enable. Default value: enable	string	"enable"	no
existing_transit_gateway_id	Existing Transit Gateway ID. If provided, the module will not create a Transit Gateway but instead will use the existing one	string	null	no
existing_transit_gateway_route_table_id	Existing Transit Gateway Route Table ID. If provided, the module will not create a Transit Gateway Route Table but instead will use the existing one	string	null	no
route_keys_enabled	If true, Terraform will use keys to label routes, preventing unnecessary changes, but this requires that the VPCs and subnets already exist before using this module. If false, Terraform will use numbers to label routes, and a single change may cascade to a long list of changes because the index or order has changed, but this will work when the true setting generates the error The "for_each" value depends on resource attributes...	bool	false	no
tags	A map of tags to apply to all resources	map(string)	{}	no
transit_gateway_cidr_blocks	The list of associated CIDR blocks. It can contain up to 1 IPv4 CIDR block of size up to /24 and up to one IPv6 CIDR block of size up to /64. The IPv4 block must not be from range 169.254.0.0/16.	list(string)	null	no
transit_gateway_description	Transit Gateway description. If not provided, one will be automatically generated.	string	""	no
transit_gateway_name	The name of the Transit Gateway	string	""	no
transit_gateway_route_table_name	The name of the Transit Gateway Route Table	string	""	no
use_existing_transit_gateway	Whether to use an existing Transit Gateway. If set to true, an existing Transit Gateway ID must be provided in the variable existing_transit_gateway_id	bool	false	no
vpc_attachment_appliance_mode_support	Whether Appliance Mode support is enabled. If enabled, a traffic flow between a source and destination uses the same Availability Zone for the VPC attachment for the lifetime of that flow. Valid values: disable, enable	string	"disable"	no
vpc_attachment_dns_support	Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: disable, enable. Default value: enable	string	"enable"	no
vpc_attachment_ipv6_support	Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: disable, enable. Default value: disable	string	"disable"	no
vpn_ecmp_support	Whether resource attachments automatically propagate routes to the default propagation route table. Valid values: disable, enable. Default value: enable	string	"enable"	no

Outputs

Name	Description
destination_cidr_blocks	Destination CIDR blocks
route_config_list	Route configuration list
route_config_map	Route configuration map
subnet_route_ids	Subnet route identifiers combined with destinations
transit_gateway_arn	Transit Gateway ARN
transit_gateway_association_default_route_table_id	Transit Gateway association default route table ID
transit_gateway_id	Transit Gateway ID
transit_gateway_propagation_default_route_table_id	Transit Gateway propagation default route table ID
transit_gateway_route_config	Transit Gateway route configuration
transit_gateway_route_ids	Transit Gateway route identifiers combined with destinations
transit_gateway_route_table_id	Transit Gateway route table ID
transit_gateway_vpc_attachment_ids	Transit Gateway VPC attachment IDs