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SOA serial in Google Cloud DNS

Posted on 01-20-2024 01:40 PM
svdr
Bronze 2
Bronze 2
Reply posted on --/--/---- --:-- AM

Hi,

We've noticed that the SOA serial number in all our domains hosted at Google Cloud DNS is '1'. This should be based on a timestamp, and updated every time a record changes.

Is this normal for Cloud DNS?

Thanks for reading.

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Posted on --/--/---- --:-- AM
Marvin_Lucero
Staff
Reply posted on --/--/---- --:-- AM

Hi @svdr ,

By default, when you create a managed zone in Cloud DNS, the system automatically generates an SOA (Start of Authority) record for that zone. This record includes a serial number, among other details.

As per documentation, Cloud DNS provides flexibility in allowing you to modify the SOA record as needed or if required, including the ability to change the serial number to an arbitrary value. This is useful for implementing your own versioning scheme, such as a timestamp-based approach.

@svdr wrote:

Is this normal for Cloud DNS?

If this is consistently showing `1`, there can be an issue. Check the zone config and the SOA record and confirm that the serial number is indeed set to a timestamp. If you have made some changes to the DNS records within the zone, it should change as well. If there are no changes, the serial number may not be updated. 

Let me know if this helps. Thanks!

Posted on --/--/---- --:-- AM
svdr
Bronze 2
Bronze 2
Reply posted on --/--/---- --:-- AM

Hi Marvin,

Thanks! That's really weird; we have more than 20 domains and all of them have a '1' for the serial number. This does not change when records are modified.