03/24/2020: Using Boto3 To Create NS Hosted Zone Record Set
Acknowledgements
This work is being done at the request of the Enterprise Container Working Group (ECWG) of the Office of Information and Technology (OIT - https://www.oit.va.gov/) at the Department of Veteran Affairs.
Article
I wanted to create a qwerty.va-oit.cloud sub-domain using a set of four name servers.
nameservers = ['ns-657.awsdns-18.net', 'ns-422.awsdns-52.com', 'ns-1995.awsdns-57.co.uk', 'ns-1469.awsdns-55.org']
I could not find example code how to do this. It’s not terribly complicated but providing an example might safe someone time so I’ll take a few minutes.
The first step is to add a period to the end of each nameserver to create an fully-qualified domain name (FQDN).
nameservers = ['{}.'.format(nameserver) for nameserver in nameservers]
The example from the boto3 documentation shows the following (which I have shortened):
response = client.change_resource_record_sets(
HostedZoneId='string',
ChangeBatch={
'Changes': [{
'Action': 'UPSERT',
'ResourceRecordSet': {
'Name': 'string',
'Type': 'NS',
'TTL': 123,
'ResourceRecords': [{'Value': 'string'},],
}
}]
}
)
I tried various ways to get the nameserver list into that string associated with value. However, it wasn’t until I realized that ResourceRecords actually was an array that I understood what was needed.
The following code converts from an “array of strings” to an “array of dict”.
nameserver_resource_records = [{'Value': nameserver} for nameserver in nameservers]
With the “array of dict”, calling the upsert becomes trivial.
response = client.change_resource_record_sets(
HostedZoneId=domain_hosted_zone_id,
ChangeBatch={
'Changes': [
{
'Action': 'UPSERT',
'ResourceRecordSet': {
'Name': sub_domain_name,
'Type': 'NS',
'TTL': 60,
'ResourceRecords': nameserver_resource_records
}
}
]
}
)
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