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Join Date: Jan 2006
Posts: 907

DNS / nameservers

I have four servers. Each server has its own ns nameservers
starting with server 1, ns1/ns2, server 2 has ns3/ns4 and so on.

I realized this is not the right way to go (aside that they all work at least).

Is this the right way to go (see below)? I'm using cpanel

Server 1 (hosting the actual parent domain)

In the dns zone for the parent (host) domain, add ns records (ns3, ns4, ns5, ns6, ns7, ns8) for the other 3 servers.

Is this correct?

On the other hand, say I wanted to use only ns1/ns2 for all servers. What is the proper method to doing this? Cluster enabled on all servers or not?

Please help me out. DNS is driving me nuts. Everyone seems to have their own ways lol.

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Join Date: Oct 2005
Posts: 515
Use ns1 and ns2 for all servers and cluster them all to that one server using the same IP address (cluster). You should be able to do this manually by replicating /etc/resolv.conf and /etc/nameserverips across all of the servers.

Join Date: Jan 2006
Posts: 907
WHM has a cluster option. Would I simply use that?

If I were to use WHM's DNS cluster function, which server would be "standalone" and which would be "synchronized"?

Thanks in advance.

PS: anyway to avoid clients downtime if I were to change the ns3 and above to ns1/ns2 ?

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Join Date: Apr 2006
Posts: 296
If you have a common name server, if that server is down, all the server becomes useless. Even if they are not used or they are used very less, it is important to segregate your nameservers according to business models.

I feel it is right at this moment, apart from only hassle that, when you want to edit any entries, you need to remember which server it has to goto.

And for smaller loads, having common name server does not simplify your job at all, if you have S1 as everyone's dns and you have S2,S3,S4 without dns. If your S1 goes down, which is DNS, your all S2,S3,S4 becomes useless because no one will be able to connect to (there will be chances that people will still will be able to connect to S2,S3,S4 using their cached dns entries of ISP), but you wil not get new visitors. If your S2,S3,S4 or any of them are down, its no point having your DNS running on S1.

Unless you have huge loads and huge entries like 500+ entries on dns server, or you require same website to have mirrors on many servers, your setup i feel is correct.

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