Amazon Route53 Construct Library

---

cfn-resources: Stable

cdk-constructs: Stable


To add a public hosted zone:

route53.PublicHostedZone(self, "HostedZone",
    zone_name="fully.qualified.domain.com"
)

To add a private hosted zone, use PrivateHostedZone. Note that enableDnsHostnames and enableDnsSupport must have been enabled for the VPC you’re configuring for private hosted zones.

# vpc: ec2.Vpc


zone = route53.PrivateHostedZone(self, "HostedZone",
    zone_name="fully.qualified.domain.com",
    vpc=vpc
)

Additional VPCs can be added with zone.addVpc().

Adding Records

To add a TXT record to your zone:

# my_zone: route53.HostedZone


route53.TxtRecord(self, "TXTRecord",
    zone=my_zone,
    record_name="_foo",  # If the name ends with a ".", it will be used as-is;
    # if it ends with a "." followed by the zone name, a trailing "." will be added automatically;
    # otherwise, a ".", the zone name, and a trailing "." will be added automatically.
    # Defaults to zone root if not specified.
    values=["Bar!", "Baz?"],
    ttl=Duration.minutes(90)
)

To add a NS record to your zone:

# my_zone: route53.HostedZone


route53.NsRecord(self, "NSRecord",
    zone=my_zone,
    record_name="foo",
    values=["ns-1.awsdns.co.uk.", "ns-2.awsdns.com."
    ],
    ttl=Duration.minutes(90)
)

To add a DS record to your zone:

# my_zone: route53.HostedZone


route53.DsRecord(self, "DSRecord",
    zone=my_zone,
    record_name="foo",
    values=["12345 3 1 123456789abcdef67890123456789abcdef67890"
    ],
    ttl=Duration.minutes(90)
)

To add an A record to your zone:

# my_zone: route53.HostedZone


route53.ARecord(self, "ARecord",
    zone=my_zone,
    target=route53.RecordTarget.from_ip_addresses("1.2.3.4", "5.6.7.8")
)

To add an A record for an EC2 instance with an Elastic IP (EIP) to your zone:

# instance: ec2.Instance

# my_zone: route53.HostedZone


elastic_ip = ec2.CfnEIP(self, "EIP",
    domain="vpc",
    instance_id=instance.instance_id
)
route53.ARecord(self, "ARecord",
    zone=my_zone,
    target=route53.RecordTarget.from_ip_addresses(elastic_ip.ref)
)

To add an AAAA record pointing to a CloudFront distribution:

import aws_cdk.aws_cloudfront as cloudfront

# my_zone: route53.HostedZone
# distribution: cloudfront.CloudFrontWebDistribution

route53.AaaaRecord(self, "Alias",
    zone=my_zone,
    target=route53.RecordTarget.from_alias(targets.CloudFrontTarget(distribution))
)

Constructs are available for A, AAAA, CAA, CNAME, MX, NS, SRV and TXT records.

Use the CaaAmazonRecord construct to easily restrict certificate authorities allowed to issue certificates for a domain to Amazon only.

To add a NS record to a HostedZone in different account you can do the following:

In the account containing the parent hosted zone:

parent_zone = route53.PublicHostedZone(self, "HostedZone",
    zone_name="someexample.com",
    cross_account_zone_delegation_principal=iam.AccountPrincipal("12345678901"),
    cross_account_zone_delegation_role_name="MyDelegationRole"
)

In the account containing the child zone to be delegated:

sub_zone = route53.PublicHostedZone(self, "SubZone",
    zone_name="sub.someexample.com"
)

# import the delegation role by constructing the roleArn
delegation_role_arn = Stack.of(self).format_arn(
    region="",  # IAM is global in each partition
    service="iam",
    account="parent-account-id",
    resource="role",
    resource_name="MyDelegationRole"
)
delegation_role = iam.Role.from_role_arn(self, "DelegationRole", delegation_role_arn)

# create the record
route53.CrossAccountZoneDelegationRecord(self, "delegate",
    delegated_zone=sub_zone,
    parent_hosted_zone_name="someexample.com",  # or you can use parentHostedZoneId
    delegation_role=delegation_role
)

Imports

If you don’t know the ID of the Hosted Zone to import, you can use the HostedZone.fromLookup:

route53.HostedZone.from_lookup(self, "MyZone",
    domain_name="example.com"
)

HostedZone.fromLookup requires an environment to be configured. Check out the documentation for more documentation and examples. CDK automatically looks into your ~/.aws/config file for the [default] profile. If you want to specify a different account run cdk deploy --profile [profile].

new MyDevStack(app, 'dev', {
  env: {
    account: process.env.CDK_DEFAULT_ACCOUNT,
    region: process.env.CDK_DEFAULT_REGION,
  },
});

If you know the ID and Name of a Hosted Zone, you can import it directly:

zone = route53.HostedZone.from_hosted_zone_attributes(self, "MyZone",
    zone_name="example.com",
    hosted_zone_id="ZOJJZC49E0EPZ"
)

Alternatively, use the HostedZone.fromHostedZoneId to import hosted zones if you know the ID and the retrieval for the zoneName is undesirable.

zone = route53.HostedZone.from_hosted_zone_id(self, "MyZone", "ZOJJZC49E0EPZ")

You can import a Public Hosted Zone as well with the similar PubicHostedZone.fromPublicHostedZoneId and PubicHostedZone.fromPublicHostedZoneAttributes methods:

zone_from_attributes = route53.PublicHostedZone.from_public_hosted_zone_attributes(self, "MyZone",
    zone_name="example.com",
    hosted_zone_id="ZOJJZC49E0EPZ"
)

# Does not know zoneName
zone_from_id = route53.PublicHostedZone.from_public_hosted_zone_id(self, "MyZone", "ZOJJZC49E0EPZ")

VPC Endpoint Service Private DNS

When you create a VPC endpoint service, AWS generates endpoint-specific DNS hostnames that consumers use to communicate with the service. For example, vpce-1234-abcdev-us-east-1.vpce-svc-123345.us-east-1.vpce.amazonaws.com. By default, your consumers access the service with that DNS name. This can cause problems with HTTPS traffic because the DNS will not match the backend certificate:

curl: (60) SSL: no alternative certificate subject name matches target host name 'vpce-abcdefghijklmnopq-rstuvwx.vpce-svc-abcdefghijklmnopq.us-east-1.vpce.amazonaws.com'

Effectively, the endpoint appears untrustworthy. To mitigate this, clients have to create an alias for this DNS name in Route53.

Private DNS for an endpoint service lets you configure a private DNS name so consumers can access the service using an existing DNS name without creating this Route53 DNS alias This DNS name can also be guaranteed to match up with the backend certificate.

Before consumers can use the private DNS name, you must verify that you have control of the domain/subdomain.

Assuming your account has ownership of the particular domain/subdomain, this construct sets up the private DNS configuration on the endpoint service, creates all the necessary Route53 entries, and verifies domain ownership.

from aws_cdk.core import Stack
from aws_cdk.aws_ec2 import Vpc, VpcEndpointService
from aws_cdk.aws_elasticloadbalancingv2 import NetworkLoadBalancer
from aws_cdk.aws_route53 import PublicHostedZone, VpcEndpointServiceDomainName

stack = Stack()
vpc = Vpc(stack, "VPC")
nlb = NetworkLoadBalancer(stack, "NLB",
    vpc=vpc
)
vpces = VpcEndpointService(stack, "VPCES",
    vpc_endpoint_service_load_balancers=[nlb]
)
# You must use a public hosted zone so domain ownership can be verified
zone = PublicHostedZone(stack, "PHZ",
    zone_name="aws-cdk.dev"
)
VpcEndpointServiceDomainName(stack, "EndpointDomain",
    endpoint_service=vpces,
    domain_name="my-stuff.aws-cdk.dev",
    public_hosted_zone=zone
)