Move Accounts to Another Server with No Downtime?

[[email protected]]

Hello,

I have a situation that it's a bit confuse for me. I have 2 WHM cPanel Servers and one VPS with Only DNS.

I have a domain name exampledomain.com for main domain to all these 3 servers.

Example:
Main WHM Server with DNS of the exampledomain.com -> hostname1.exampledomain.com
Second WHM Server -> hostname2.exampledomain.com
DNSONLY setup -> ns21.exampledomain.com

I want my Main WHM Server that have the main domain exampledomain.com and DNS records to format it and install new centos and cPanel fresh installation.

The problem is the time that I make this work my second server that have hostname2.exampledomain.com will not resolve the mails and sites of websites that are there?? How is possible to make my work with no downtime to my second WHM Server?

See below the structure:

Main WHM Server {That I want to shutdown and re-install}

I have it with cluster to DNSonly

hostname.exampledomain.com
    ns21.exampledomain.com {Write-only}

Main WHM Server DNS records of the domain that sharing:

DNS - Records of my Main WHM Server

exampledomain.com        300    IN    NS    ns1.exampledomain.com
exampledomain.com        300    IN    NS    ns2.exampledomain.com

ns1                14400    IN    A    123.123.123.123 {Main WHM Server IP}
ns2                14400    IN    A    123.123.123.123 {Main WHM Server IP}

ns100             14400    IN    A    123.123.123.111 {Other WHM cPanel Server}

ns200             14400    IN    A    123.123.123.222 {My OnlyDNS as second nameserver on my other cPanel Server}
ns21               14400    IN    A    123.123.123.222 {My OnlyDNS hostname and nameserver on MyOnlyDNS vps setup}

exampledomain.com        14400    IN    MX    0    exampledomain.com

exampledomain.com        14400    IN    A    123.123.123.123

hostname2    14400    IN    A    123.123.123.111    {Other WHM cPanel Server Hostname}

From intodns:

exampledomain.com Results:

ns1.exampledomain.com    123.123.123.123
ns2.exampledomain.com    123.123.123.123

I want to mention that all the records also is on ns21.exampledomain.com

Also I have setup the second WHM server as:

hostname2.exampledomain.com
    ns21.exampledomain.com {Write-only}

Can advice me how I can make no downtime of my second server that have the same domain in hostname and ns records?

Thank you in advanced!

 

[cPanelLauren]

Hi @[email protected]


I'll never promise 0 downtime because things happen, but the instructions provided in or KB article here: How to Move All cPanel Accounts from One Server to Another - cPanel Knowledge Base - cPanel Documentation are the best way to do this with minimal downtime.

Thanks!