Update blocked for DNS-Only server. (CentOS 6.10 / Cpanel 56.0)

electric

Well-Known Member
Nov 5, 2001
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318
Hello,

We have an old cpanel "DNS-Only" nameserver that is currently running cpanel v56 on CentOS 6.10. Cpanel can't be upgraded, because the OS is too old.

So it seems we must upgrade to CentOS 7.

This nameserver is one of four cpanel DNS-Only nameservers that are connected as a DNS Cluster to all our web servers. (ns1/ns2/ns3/ns4 -- This server is "ns1".)

Can you tell me what is the process to do this upgrade? My concern is how to sync the zonefiles from the other nameservers in the DNS Cluster, after the OS upgrade is completed. Here is what I am planning:

  1. Re-image the server with a fresh installation of CentOS 7.
  2. Install fresh cpanel DNS-Only version.
  3. Log into each cpanel web server that uses this nameserver, click the "DNS Cluster" link, and re-add this nameserver using DNS Role of "Synchronize Changes".
  4. Sync all the zonefiles from the other nameservers in the DNS Cluster.

It is step #4 that I don't know how to do. Can anyone tell me what is needed to get all the zonefiles onto the nameserver after it's ready?

Thanks!
 

electric

Well-Known Member
Nov 5, 2001
789
10
318
Hello,

Is it possible to update our cpanel DNS-Only server to latest cpanel version? We are running:

CENTOS 6.10 i686 virtuozzo – ns1 WHM 56.0 (build 52)
In the top right corner of our cpanel we see this message:

The last attempt to update cPanel & WHM was blocked. Details
I click the details link, and here is the reason:

Reasons for blocked updates.
Please correct these issues and rerun updates.

fatal: Newer releases of cPanel & WHM are not compatible with your operating system. Upgrade your OS, or use the Update Preferences screen to select a Long-Term Support release for use with your OS. Please see our OS End of Life policy for more information.
When I click the "Update Preferences" screen, it does nothing.

Is it not possible to update a DNS-Only server running CentOS 6 to latest version of cpanel?
 

electric

Well-Known Member
Nov 5, 2001
789
10
318
Yes, this is what the top right corner of the cpanel DNS-Only says:

CENTOS 6.10 i686 virtuozzo – ns1 WHM 56.0 (build 52)
It's definitely CentOS 6.10.

Any ideas what to do to fix this? If cpanel doesn't recognize CentOS 6, what should I do?
 

cPanelKenneth

cPanel Development
Staff member
Apr 7, 2006
4,607
79
458
cPanel Access Level
Root Administrator
Hi,

I'm guessing your operating system is 32-bit. We stopped supporting 32-bit versions of CentOS with cPanel & WHM version 11.56. You'll need to convert to an x86-64 server to use a version newer than 11.56.
 
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electric

Well-Known Member
Nov 5, 2001
789
10
318
I still do not have any answer for my original problem:

Can you tell me what is the process to do the upgrade? My concern is how to sync the zonefiles from the other nameservers in the DNS Cluster, after the OS upgrade is completed. Here is what I am planning:

  1. Re-image the server with a fresh installation of CentOS 7.
  2. Install fresh cpanel DNS-Only version.
  3. Log into each cpanel web server that uses this nameserver, click the "DNS Cluster" link, and re-add this nameserver using DNS Role of "Synchronize Changes".
  4. Sync all the zonefiles from the other nameservers in the DNS Cluster.

It is step #4 that I don't know how to do. Can anyone tell me what is needed to get all the zonefiles onto the nameserver after it's ready?

** This nameserver is one of four cpanel DNS-Only nameservers that are connected as a DNS Cluster to all our web servers. (ns1/ns2/ns3/ns4 -- This server is "ns1".)

Thanks!
 

cPanelLauren

Product Owner
Staff member
Nov 14, 2017
13,295
1,273
313
Houston
  1. Re-image the server with a fresh installation of CentOS 7.
  2. Install fresh cpanel DNS-Only version.
  3. Log into each cpanel web server that uses this nameserver, click the "DNS Cluster" link, and re-add this nameserver using DNS Role of "Synchronize Changes".
  4. Sync all the zonefiles from the other nameservers in the DNS Cluster.
It is step #4 that I don't know how to do. Can anyone tell me what is needed to get all the zonefiles onto the nameserver after it's ready?
Logging into the webservers and running a manual sync would be sufficient for this - this will also take place automatically once it's added to the cluster. We have some great documentation on how to manage DNS servers here: DNS Cluster - Version 82 Documentation - cPanel Documentation