AWS Amazon EC2 Transit Gateway Route Table Propagation
This page shows how to write Terraform and CloudFormation for Amazon EC2 Transit Gateway Route Table Propagation and write them securely.
aws_ec2_transit_gateway_route_table_propagation_table_propagation (Terraform)
The Transit Gateway Route Table Propagation in Amazon EC2 can be configured in Terraform with the resource name aws_ec2_transit_gateway_route_table_propagation_table_propagation
. The following sections describe how to use the resource and its parameters.
Example Usage from GitHub
An example could not be found in GitHub.
Parameters
The following arguments are supported:
transit_gateway_attachment_id
- (Required) Identifier of EC2 Transit Gateway Attachment.transit_gateway_route_table_id
- (Required) Identifier of EC2 Transit Gateway Route Table.
In addition to all arguments above, the following attributes are exported:
id
- EC2 Transit Gateway Route Table identifier combined with EC2 Transit Gateway Attachment identifierresource_id
- Identifier of the resourceresource_type
- Type of the resource
Explanation in Terraform Registry
Manages an EC2 Transit Gateway Route Table propagation.
Tips: Best Practices for The Other AWS Amazon EC2 Resources
In addition to the aws_default_vpc, AWS Amazon EC2 has the other resources that should be configured for security reasons. Please check some examples of those resources and precautions.
aws_default_vpc
Ensure to avoid using default VPC
It is better to define the own VPC and use it.
aws_network_acl_rule
Ensure your network ACL rule blocks unwanted inbound traffic
It is better to block unwanted inbound traffic.
aws_ebs_volume
Ensure to use a customer-managed key for EBS volume encryption
It is better to use a customer-managed key for EBS volume encryption. It can be gain more control over the encryption by using customer-managed keys (CMK).
aws_instance
Ensure to avoid storing AWS access keys in user data
It is better to avoid storing AWS access keys in user data. `aws_iam_instance_profile` could be used instead.
aws_security_group
Ensure your security group blocks unwanted inbound traffic
It is better to block unwanted inbound traffic.
AWS::EC2::TransitGatewayRouteTablePropagation (CloudFormation)
The TransitGatewayRouteTablePropagation in EC2 can be configured in CloudFormation with the resource name AWS::EC2::TransitGatewayRouteTablePropagation
. The following sections describe 10 examples of how to use the resource and its parameters.
Example Usage from GitHub
Type: "AWS::EC2::TransitGatewayRouteTablePropagation"
Properties:
TransitGatewayAttachmentId: !Ref AttachAOCTANK
TransitGatewayRouteTableId: !Ref RTRed
PropagateAOCTANKGreen:
Type: AWS::EC2::TransitGatewayRouteTablePropagation
Properties:
TransitGatewayAttachmentId: !Ref pTgwAttachId
TransitGatewayRouteTableId: !Ref pManagementServicesRtId
rTenantVpcPropagationToInspectionRt:
Condition: cEnableVpcFirewall
Type: AWS::EC2::TransitGatewayRouteTablePropagation
Properties:
TransitGatewayAttachmentId: !Ref pDmzVpcTgwAttachIdId
TransitGatewayRouteTableId: !Ref pInspectionRtId
rInspectionRtPropagationManagementServicesVpc:
Type: AWS::EC2::TransitGatewayRouteTablePropagation
Type: AWS::EC2::TransitGatewayRouteTablePropagation
Properties:
TransitGatewayAttachmentId: !Ref NewAttachmentID
TransitGatewayRouteTableId: !ImportValue NetworkTGWRTID
# "Propagate" the CIDRblock on the Shared Service route table
SharedServicesTGWRouteTableRoutePropagation:
Type: AWS::EC2::TransitGatewayRouteTablePropagation
Properties:
TransitGatewayAttachmentId: !Ref NewAttachmentID
TransitGatewayRouteTableId: !ImportValue SharedServicesTGWRTID
# "Propagate" the CIDRblock on the AppIsolated Prod route table
AppIsolatedProdTGWRouteTableRoutePropagation:
"AWS::EC2::TransitGatewayRouteTablePropagation": {
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html",
"Properties": {
"TransitGatewayRouteTableId": {
"Required": true,
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html#cfn-ec2-transitgatewayroutetablepropagation-transitgatewayroutetableid",
"AWS::EC2::TransitGatewayRouteTablePropagation": {
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html",
"Properties": {
"TransitGatewayRouteTableId": {
"Required": true,
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html#cfn-ec2-transitgatewayroutetablepropagation-transitgatewayroutetableid",
"AWS::EC2::TransitGatewayRouteTablePropagation": {
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html",
"Properties": {
"TransitGatewayRouteTableId": {
"Required": true,
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html#cfn-ec2-transitgatewayroutetablepropagation-transitgatewayroutetableid",
"AWS::EC2::TransitGatewayRouteTablePropagation": {
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html",
"Properties": {
"TransitGatewayRouteTableId": {
"Required": true,
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html#cfn-ec2-transitgatewayroutetablepropagation-transitgatewayroutetableid",
"AWS::EC2::TransitGatewayRouteTablePropagation": {
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html",
"Properties": {
"TransitGatewayRouteTableId": {
"Required": true,
"Documentation": "http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-ec2-transitgatewayroutetablepropagation.html#cfn-ec2-transitgatewayroutetablepropagation-transitgatewayroutetableid",
Parameters
-
TransitGatewayRouteTableId
required - String -
TransitGatewayAttachmentId
required - String
Explanation in CloudFormation Registry
Enables the specified attachment to propagate routes to the specified propagation route table.
For more information about enabling transit gateway route propagation, see EnableTransitGatewayRouteTablePropagation in the Amazon EC2 API Reference.
Frequently asked questions
What is AWS Amazon EC2 Transit Gateway Route Table Propagation?
AWS Amazon EC2 Transit Gateway Route Table Propagation is a resource for Amazon EC2 of Amazon Web Service. Settings can be wrote in Terraform and CloudFormation.
Where can I find the example code for the AWS Amazon EC2 Transit Gateway Route Table Propagation?
For CloudFormation, the whchoi98/TGW_CF, awslabs/compliant-framework-for-federal-and-dod-workloads-in-aws-govcloud-us and awslabs/compliant-framework-for-federal-and-dod-workloads-in-aws-govcloud-us source code examples are useful. See the CloudFormation Example section for further details.