change host name of my server and cpanel unlicensed

I have an ovh server. Some days before I just login in my WHM and I change host name server1.domain.com to ip of my server xxx.xxx.xxx.xxx. after that change I have lost access of cpanel. When I login root I got this error screen.

Thank You for installing cPanel & WHM.

In order to access the interface, you will need to make sure that the software license on this server is active and installed.

Your license could not be activated because:

Cannot Read License File

1. First, go to http://verify.cpanel.net/ and enter the public IP address of this server to make sure it is licensed.
2. If licensed, try running /usr/local/cpanel/cpkeyclt from the command line as root.
3. You'll also need to make sure that port 80 is open to contact our license server and that your server's hostname is a FQDN.

I verify my ip is active on cpanel, port 80 is open and I try to login SSH root but I remember I block SSh access of my server for security purpose.

I tried a lot to submit tickets to ovh and cpanel but as usual they are unable to resolve my issue.

I also try OVH server rescue mode loging recue SSh root, mount drive chroot.
run command /usr/local/cpanel/cpkeyclt
got msg...
root@rescue [/]# /usr/local/cpanel/cpkeyclt
Updating cPanel license...Error, do this: mount -t proc none /proc
Done. Update succeeded.
Building global cache for cpanel...hostname: Unknown host
Done

unable to resolve issue.

Now I want help if anyone can help me.

 

Your license provider will have to edit your license in Cpanels system.

Some providers use automated tools to provision and track licenses. Providers like softlayer have great api and tools for you and them to manage servers and software licenses. The fqdn issue happens quite a bit if the tools fail or there are none in place.

Good luck.
Mark

 

There's nothing you're going to be able to do on your server without SSH access. You are very likely going to need to reinstall the OS. Perhaps the cPanel folks will be able to help you if you submit a support ticket to them, but again, without access to WHM or SSH, I'm not really sure what they're going to be able to do for you.

 

Just go to where you bought your cpanel license and re-issue it. It's very easy.

 

That's not the problem. There's nothing to reissue. cPanel licenses are based on IP addresses, not hostnames, so there is something else at play here. The OP said he changed the hostname, but the IP address has not changed.

 

Hello,

Do you have access KVM Over IP?

You may be able to fix it that way, or the only other way is maybe a OS Reload, but your going to lose your data.

Regards,
Adam

 

Reinstall oS.Next cPanel install.

 

Obviously the experience tells it is not so user-friendly.
I would prefer to switch to other reputable, long established, largest web hosting.