I'm new in the systems world, so i'm going to explain the issue.
I'm building a H.A. Cluster with 2 nodes, with Centos 6.8 on both servers, that works so fine, I've Installed Webmin/Virtualmin on both servers too. I've made a full virtual server backup of the node in production of my client (He only had 1 server). Two nodes are in cluster at all the webmin modules, and i get the code that execute the process of synchronize when you click the synchronize button, that synchronize users, groups and all the features between the system, and I make a easy program to do this automatically each time the last process end.
When I try to restore the backup on the master node, it generate a DNS zone and MYSQL syntax errors, in fact of this, users and groups do not appear in the virtual server, but the system create the domain, after this i use vim to edit the /var/named/*******.hosts and add the zone to solve the issue, and run the restore again, but this time i let unchecked MYSQL and one option of DNS, this create without problems the virtual server, with users, groups, files.
My problem is, when i try to restore the second node I've done the same method and i get this error
a clash was detected : The DNS domain *******.com is already hosted by your DNS server
Can anyone help me to solve this?