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feat(elasticloadbalancingv2): dualstack NetworkLoadBalancer (#27546)
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Adds support for dual-stack NetworkLoadBalancer via the [`ipAddressType`](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-elasticloadbalancingv2-loadbalancer.html#cfn-elasticloadbalancingv2-loadbalancer-ipaddresstype) property.

Example:
```
const lb = new elbv2.NetworkLoadBalancer(this, 'LB', {
  vpc,
  internetFacing: true
  ipAddressType: elbv2.IpAddressType.DUAL_STACK,
});
```

Also, added validation to enforce that UDP or TCP_UDP listeners cannot be added to a dualstack NLB.

Closes #27538.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*
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lpizzinidev authored Dec 24, 2023
1 parent 00331a7 commit e03a41f
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Showing 25 changed files with 3,338 additions and 6 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ const ipv6Block = new ec2.CfnVPCCidrBlock(
// public subnets.
const internetGateway = valueOrDie<IConstruct, ec2.CfnInternetGateway>(
vpc.node.children.find(c => c instanceof ec2.CfnInternetGateway),
new Error('Couldnt find an internet gateway'),
new Error('Couldn\'t find an internet gateway'),
);

const lb = new elbv2.ApplicationLoadBalancer(stack, 'LB', {
Expand Down

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Original file line number Diff line number Diff line change
@@ -0,0 +1,303 @@
{
"Resources": {
"VPCB9E5F0B4": {
"Type": "AWS::EC2::VPC",
"Properties": {
"CidrBlock": "10.0.0.0/16",
"EnableDnsHostnames": true,
"EnableDnsSupport": true,
"InstanceTenancy": "default",
"Tags": [
{
"Key": "Name",
"Value": "aws-cdk-nlb-dualstack-internal/VPC"
}
]
}
},
"VPCIsolatedSubnet1SubnetEBD00FC6": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"AssignIpv6AddressOnCreation": true,
"AvailabilityZone": {
"Fn::Select": [
0,
{
"Fn::GetAZs": ""
}
]
},
"CidrBlock": "10.0.0.0/17",
"Ipv6CidrBlock": {
"Fn::Select": [
0,
{
"Fn::Cidr": [
{
"Fn::Select": [
0,
{
"Fn::GetAtt": [
"VPCB9E5F0B4",
"Ipv6CidrBlocks"
]
}
]
},
256,
"64"
]
}
]
},
"MapPublicIpOnLaunch": false,
"Tags": [
{
"Key": "aws-cdk:subnet-name",
"Value": "Isolated"
},
{
"Key": "aws-cdk:subnet-type",
"Value": "Isolated"
},
{
"Key": "Name",
"Value": "aws-cdk-nlb-dualstack-internal/VPC/IsolatedSubnet1"
}
],
"VpcId": {
"Ref": "VPCB9E5F0B4"
}
},
"DependsOn": [
"IPv6Block"
]
},
"VPCIsolatedSubnet1RouteTableEB156210": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"Tags": [
{
"Key": "Name",
"Value": "aws-cdk-nlb-dualstack-internal/VPC/IsolatedSubnet1"
}
],
"VpcId": {
"Ref": "VPCB9E5F0B4"
}
},
"DependsOn": [
"IPv6Block"
]
},
"VPCIsolatedSubnet1RouteTableAssociationA2D18F7C": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "VPCIsolatedSubnet1RouteTableEB156210"
},
"SubnetId": {
"Ref": "VPCIsolatedSubnet1SubnetEBD00FC6"
}
},
"DependsOn": [
"IPv6Block"
]
},
"VPCIsolatedSubnet2Subnet4B1C8CAA": {
"Type": "AWS::EC2::Subnet",
"Properties": {
"AssignIpv6AddressOnCreation": true,
"AvailabilityZone": {
"Fn::Select": [
1,
{
"Fn::GetAZs": ""
}
]
},
"CidrBlock": "10.0.128.0/17",
"Ipv6CidrBlock": {
"Fn::Select": [
1,
{
"Fn::Cidr": [
{
"Fn::Select": [
0,
{
"Fn::GetAtt": [
"VPCB9E5F0B4",
"Ipv6CidrBlocks"
]
}
]
},
256,
"64"
]
}
]
},
"MapPublicIpOnLaunch": false,
"Tags": [
{
"Key": "aws-cdk:subnet-name",
"Value": "Isolated"
},
{
"Key": "aws-cdk:subnet-type",
"Value": "Isolated"
},
{
"Key": "Name",
"Value": "aws-cdk-nlb-dualstack-internal/VPC/IsolatedSubnet2"
}
],
"VpcId": {
"Ref": "VPCB9E5F0B4"
}
},
"DependsOn": [
"IPv6Block"
]
},
"VPCIsolatedSubnet2RouteTable9B4F78DC": {
"Type": "AWS::EC2::RouteTable",
"Properties": {
"Tags": [
{
"Key": "Name",
"Value": "aws-cdk-nlb-dualstack-internal/VPC/IsolatedSubnet2"
}
],
"VpcId": {
"Ref": "VPCB9E5F0B4"
}
},
"DependsOn": [
"IPv6Block"
]
},
"VPCIsolatedSubnet2RouteTableAssociation7BF8E0EB": {
"Type": "AWS::EC2::SubnetRouteTableAssociation",
"Properties": {
"RouteTableId": {
"Ref": "VPCIsolatedSubnet2RouteTable9B4F78DC"
},
"SubnetId": {
"Ref": "VPCIsolatedSubnet2Subnet4B1C8CAA"
}
},
"DependsOn": [
"IPv6Block"
]
},
"IPv6Block": {
"Type": "AWS::EC2::VPCCidrBlock",
"Properties": {
"AmazonProvidedIpv6CidrBlock": true,
"VpcId": {
"Ref": "VPCB9E5F0B4"
}
}
},
"LB8A12904C": {
"Type": "AWS::ElasticLoadBalancingV2::LoadBalancer",
"Properties": {
"IpAddressType": "dualstack",
"LoadBalancerAttributes": [
{
"Key": "deletion_protection.enabled",
"Value": "false"
}
],
"Scheme": "internal",
"Subnets": [
{
"Ref": "VPCIsolatedSubnet1SubnetEBD00FC6"
},
{
"Ref": "VPCIsolatedSubnet2Subnet4B1C8CAA"
}
],
"Type": "network"
}
},
"LBListener49E825B4": {
"Type": "AWS::ElasticLoadBalancingV2::Listener",
"Properties": {
"DefaultActions": [
{
"TargetGroupArn": {
"Ref": "tg2DCFFD86"
},
"Type": "forward"
}
],
"LoadBalancerArn": {
"Ref": "LB8A12904C"
},
"Port": 3000,
"Protocol": "TCP"
}
},
"tg2DCFFD86": {
"Type": "AWS::ElasticLoadBalancingV2::TargetGroup",
"Properties": {
"HealthCheckIntervalSeconds": 250,
"HealthCheckProtocol": "TCP",
"HealthCheckTimeoutSeconds": 100,
"HealthyThresholdCount": 5,
"Port": 3000,
"Protocol": "TCP",
"UnhealthyThresholdCount": 2,
"VpcId": {
"Ref": "VPCB9E5F0B4"
}
},
"DependsOn": [
"VPCIsolatedSubnet1RouteTableEB156210",
"VPCIsolatedSubnet1RouteTableAssociationA2D18F7C",
"VPCIsolatedSubnet1SubnetEBD00FC6",
"VPCIsolatedSubnet2RouteTable9B4F78DC",
"VPCIsolatedSubnet2RouteTableAssociation7BF8E0EB",
"VPCIsolatedSubnet2Subnet4B1C8CAA"
]
}
},
"Parameters": {
"BootstrapVersion": {
"Type": "AWS::SSM::Parameter::Value<String>",
"Default": "/cdk-bootstrap/hnb659fds/version",
"Description": "Version of the CDK Bootstrap resources in this environment, automatically retrieved from SSM Parameter Store. [cdk:skip]"
}
},
"Rules": {
"CheckBootstrapVersion": {
"Assertions": [
{
"Assert": {
"Fn::Not": [
{
"Fn::Contains": [
[
"1",
"2",
"3",
"4",
"5"
],
{
"Ref": "BootstrapVersion"
}
]
}
]
},
"AssertDescription": "CDK bootstrap stack version 6 required. Please run 'cdk bootstrap' with a recent version of the CDK CLI."
}
]
}
}
}

Some generated files are not rendered by default. Learn more about how customized files appear on GitHub.

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