Basically I was new to this virtualmin administration and its interface was really confusing to me. My task was to do a mass domains migration between two centos servers having virtualmin panel installed in it. Following are the steps I did for the server wide migration.
First reduced the TTLs to 5min prior to hours of migration to avoid downtimes while changing the A records.
virtualmin modify-dns –all-domains –ttl 300
Then I created a directory “/root/backups” to store all the domains backup that I generate in the source server.
virtualmin backup-domain –dest /root/backups/ –all-domains –all-features –newformat –all-virtualmin
Copy it over to new server with same directory path “/root/backups” for easiness in use.
rsync -avzrp /root/backups/ firstname.lastname@example.org:/root/backups/
if destination server is using any non standard port for ssh, then make some alteration to above rsync command.
rsync -avzrp -e “ssh -p portno” /root/backups/ email@example.com:/root/backups/
Restore your domains in destination server.
* virtualmin restore-domain –source /root/backups/virtualmin.tar.gz –all-virtualmin
* virtualmin restore-domain –source /root/backups/ –all-domains –all-features
Set the TTLs back to 4 hours now.
virtualmin modify-dns –all-domains –ttl 14400
You are done 🙂
Virtualmin install: http://www.virtualmin.com/download.html