Problem

I created a Route 53 zone with the following code:

this.apiV2Zone = new PublicHostedZone(this, "ApiV2", {
  zoneName: "api-v2.example.com"
});

The zone was created as expected, but I noticed the TTL attribute for the NS record was set to 172800 (2 days). This is a bit high at the moment, because I'm just experimenting - setting the TTL lower won't cost me much for now.

But, how do I go about seting the TTL of the NS record with the CDK?

---

What I've tried

I tried to force the NS record myself with:

let target = RecordTarget.fromValues(
  ...this.apiV2Zone.hostedZoneNameServers ?? [] );
const recordSet = new RecordSet(this, 'ApiV2Ns', {
  recordType: RecordType.NS,
  target,
  zone: this.apiV2Zone,
  deleteExisting: true,
  recordName: this.apiV2Zone.zoneName,
  ttl: cdk.Duration.minutes(10),
});

But that failed on deploy with:

 Received response status [FAILED] from custom resource. Message returned: InvalidChangeBatch
: [A HostedZone must contain at least one NS record for the zone itself.]

Also tried with deleteExisting: false but that failed too because it was duplicating the existing NS record.

---

Workaround

Set it manually in the AWS console. Doesn't seem to cause any change to be reported when I do a CDK diff.

---

https://stackoverflow.com/questions/75217593/cdk-how-to-set-the-ttl-of-the-ns-record-for-a-route53-publichostedzone