Google Cloud DNS Configuration

check google and it says you don't need to change to google name server

https://cloud.google.com/compute/docs/tutorials/setting-up-dns

Mapping your domain name using a third-party DNS provider

If you have an existing DNS provider that you want to use, you need to create a couple of records with that provider. This lesson assumes that you are mapping example.com and www.example.com to point to your website hosted on Google Compute Engine.

For the example.com domain name, create an A record with your DNS provider. For the www.example.com sub-domain, create a CNAME record for www to point it to the example.com domain. The A record maps a host name to an IP address. The CNAME record creates an alias for the A record. This lesson assumes you want example.com and www.example.com to map to the same IP address.

Get your external IP address for your instance. You can look up the IP address from the VM instances page in the Developers Console.

Sign in to your provider's DNS management interface and find the domain that you want to manage. Refer to your DNS provider's documentation for specific steps.

Create an A record and set the value to your external IP address. The name or host field can be set to @, which represents the naked domain. For more information, the Google Apps support page provides help for completing various DNS tasks.

Create a CNAME record, set the name to www, and set the value to @ or to your hostname followed by a period (example.com.). Read the Google Apps support for help creating the A record with various providers.

If appropriate for your provider, increment the serial number in your SOA record to reflect that changes have been made so that your records will propagate.

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Hi,

Thanks for your reply. I those what I considered before, but there are issues all domain register through Godaddy which not allow to customize DNS zone when we are not using their nameserver, I tried before name server can not resolve the IP of google compute instance. Is there any configuration we need to do on each instance.

Other way, I am thinking point NS1 and NS1 to IP address of google cloud name server, but this way I have to add all domain to Google Cloud DNS, which I have to pay every month.

Really appreciated your suggestion.

Thanks

what the benefit of switching to google dns?
do you have a lot of Google Compute Engine?

you just need to map each of them to the subaddress to google external ip address
a bit of headache but they are required.

if not, you need to switch both ns record to google dns.