What's best solution to make a primary server DNS / IPS change?

I actually have (example domain/ips)

ns1.domain.com 192.000.000.1
ns2.domain.com 192.000.000.2

Can setup all dns records on new server and then change these nameservers IP to new ones?
In this way all will be "invisible" for domains
There is some problem doing this? (possible downtime, dns de-syncs...)

Other way is create new dns entries (newserver-ns1.domain.com / newserver-ns2.domain.com) pointing to new ips and change all domains to new DNS.

Anyone experienced with this situation before?


Electrik.-

As long as the old DNS server still running during the transition and about a week after, there should be no problem.

Ok thanks,

and other question:

nameservers needs to have A record?

ns1.domain.com IN A xxx.xxx.xxx.xxx
ns2.domain.com IN A xxx.xxx.xxx.xxx

(problem is I have domain.com in other server)

Yes, name servers do need A records. It is fine if the name servers are outside your zone.

Priyadi,

I have the same doubt [in the same situ] and I am planning to set up all my domains in the new server and then go to netsol and change the IP's of both the nameservers ns1.valai.net and ns2.valai.net at once. I will retain the old server for some more time

So whether the DNS cache is old or new will not my sites be visible.. isn't this simpler than asking all my clients to change their DNS?

Thx
Balaji

Check out www.internic.net 's whois then select nameserver . They maintain one of the root server. Correct information made changed through any registrars (ie. netsol) should be shown here so that people around the world will check it out . If you make change at Netsol but internic did not update within a few days, then Netsol is out of service . If I were you, I will move my domain to opensrs so that I can easily make change to nameservers.

Note that although you made change to internic.
Some registrars like corenic might not update your nameservers' IP in their whois database but don't worry, that has no effect to the world.

Originally posted by MotleyFool
Priyadi,

I have the same doubt [in the same situ] and I am planning to set up all my domains in the new server and then go to netsol and change the IP's of both the nameservers ns1.valai.net and ns2.valai.net at once. I will retain the old server for some more time

So whether the DNS cache is old or new will not my sites be visible.. isn't this simpler than asking all my clients to change their DNS?

Thx
Balaji

I hope I understand your question :)

I believe you should change the DNS records on your old servers too, because for some time the old server will still be queried.

Are all your clients use ns1/ns2.valai.net for their NS records? If that's the case, all you need is change the IP address for both DNS servers. You also need to update the DNS entries (A records, etc) to reflect the change of server, of course. To avoid problems, you still need to make sure all of your servers contains the same DNS information.

Priyadi & jakis,

Thanks very much for the answers

I see that I have been cryptic.

I currently am on a reseller plan with a server in nac.net. My DNS and my ns1/ns2.valai.net IP's are on this machine. I have 21 little domains some using my nameservers, some using enoms nameservers [where I have registered the domain for the clients and I can change the DNS records at my will] all hosted on this server at nac.net.

Now I am moving to a server all my own in 2 weeks. I am planning to keep my old server space and the domains intact and create and set up the same accounts in the new server [on a name based hosting], upload the sites again to the new server redundantly and then just change the IP's of ns1.valai.net and ns2.valai.net with netsol [where I registered valai.net and the nameservers] [Ofcourse I have to change the DNS records in the enom dB for those domains]

Once all the domains resolve to the new server I will drop the old ones

Is this a fool proof plan is what I wanted to know - you being an expert in DNS?

Thanks
Balaji

If all your domains uses your ns1/ns2.valai.net, then all you need is:

- change the IP for ns1/ns2.valai.net to the new server
- make sure the DNS records reflect your new server, i.e. A records pointing to new server, etc.
- if possible, make the old server a slave for the new server, so the old server will serve your new records as well as the new server. If you can't, it is ok, but some visitor will be using your old server for some time, and mail occasionally will be sent to the old server.
- to make transition more seamless, you need to keep the old server serving for a few days. It won't be 100% seamless however, especially for web sites like forum or similar.

here's a brief of how DNS travel (http://cr.yp.to/djbdns/faq/orientation.html) . You should have no problem if Netsol allow you to make change in their local then propragate your new information to 13 root servers out there.

Goodluck with netsol. (i'd never been successfully change IP with them).