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Shanna517

: If I change my DNS's IP address will that change the Google Compute instance instantly? I'm currently using Google Compute to host my website. If I change the IP address under Google Cloud

@Shanna517

Posted in: #Dns #Google #GoogleCompute #IpAddress

I'm currently using Google Compute to host my website.

If I change the IP address under Google Cloud DNS will that change the instance instantly?

Upgrading Instance Video:


Or will it be delayed, like with nameserver propagation?

UPDATE:

I have created a "clone", using a Snapshot, with the new machine specifications and hard disk size I am looking for.


I have checked my FTP and it works - all my php files etc are there.
I have checked my phpmyadmin and it is working and all tables are
intact.


However, when I access the ip address in my browser it does not load the page. Does this simply mean I need to update my DNS IP Address to point to the new instance? Will this switchover be instant?

I'm trying to figure out really if the DNS IP address is something I can switch at a second's notice or if I play with it I could be disrupting my pathroute for days...

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@Hamaas447

I use Route53 which is amazons version. I can relate that I have a 60 second TTL on all my zones and when I make a change, that change syncs to their dns infrastructure in about 10 seconds. All total when I change a record with them and sync its about 2 minutes.

To affect a change to a single server I would


Change or ensure ttl is at 60s.
Verify that change has propogated. DIG. Old TTL plus New TTL = propogation time to first tiers.
Once I see that change has propogated, then I know its just 60s to a record change.
Create second record set for change to be made. TTL 60s
wait a min, do the switch.


This is why I leave my TTL at 60, that and Amazons managed DNS is essentially doing l3 routing based on geo and latency for me.

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