DNS Cluster for multiple cPanel servers

diWhile1

Member
Oct 11, 2015
16
0
1
Israel
cPanel Access Level
Root Administrator
What is the correct way to set up DNS CLUSTER for multiple cPanel servers (srv1.domain.com,srv2.domain.com,srv3.domain.com,...), which connect two central servers DNSonly (ns1.domain.com,ns2.domain.com).
I thought about it that way, but apparently I was wrong, or not sure:
Code:
srv1.domain.com (Write-only)-> ns1.domain.com
                (Write-only)-> ns2.domain.com

srv2.domain.com (Write-only)-> ns1.domain.com
                (Write-only)-> ns2.domain.com

srv3.domain.com (Write-only)-> ns1.domain.com
                (Write-only)-> ns2.domain.com
 

Aaron Hatton

Active Member
Jun 19, 2012
26
1
3
London, United Kingdom
cPanel Access Level
Root Administrator
What is the correct way to set up DNS CLUSTER for multiple cPanel servers (srv1.domain.com,srv2.domain.com,srv3.domain.com,...), which connect two central servers DNSonly (ns1.domain.com,ns2.domain.com).
I thought about it that way, but apparently I was wrong, or not sure:
Code:
srv1.domain.com (Write-only)-> ns1.domain.com
                (Write-only)-> ns2.domain.com

srv2.domain.com (Write-only)-> ns1.domain.com
                (Write-only)-> ns2.domain.com

srv3.domain.com (Write-only)-> ns1.domain.com
                (Write-only)-> ns2.domain.com
This is the way we have it set up however we have found the following issue:

We have recently had an issue as to where if a website is hosted on one server, for example, mydomain.com is hosted on srv1.domain.com as a cPanel website hosting account.

If the client changes MX Records from mail.mydomain.com to mail2.mydomain.com the changes will replicate to all slave servers within it's cluster but they may not replicate across to srv2.domain.com, when a support tech then changes an A record for the domain mydomain.com from srv2.domain.com it overwrites the MX record changes and thus causes issues.
 

diWhile1

Member
Oct 11, 2015
16
0
1
Israel
cPanel Access Level
Root Administrator
Okay, so I tested it in my lab and found that it worked quite well
Code:
srv1.domain.com (Synchronize)-> ns1.domain.com
                (Synchronize)-> ns2.domain.com
srv2.domain.com (Synchronize)-> ns1.domain.com
                (Synchronize)-> ns2.domain.com
srv3.domain.com (Synchronize)-> ns1.domain.com
                (Synchronize)-> ns2.domain.com

ns1.domain.com (Standalone)-> srv1.domain.com
               (Standalone)-> srv2.domain.com
               (Standalone)-> srv3.domain.com
ns2.domain.com (Standalone)-> srv1.domain.com
               (Standalone)-> srv2.domain.com
               (Standalone)-> srv3.domain.com
Is there something I'm missing?
I would like to receive a formal reply from cPanel about it And if Aaron Hatton or anyone else would try to implement it and to share thoughts would be great.
 

cPanelMichael

Technical Support Community Manager
Staff member
Apr 11, 2011
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DataCenter Provider
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