I’m definitely ready to migrate my old CentOS 6 server to a brand new Ubuntu 20.04.
I have followed the instructions from the migration page of Virtualmin and made a backup of everything then i have sent the files to the new server and started to restore all domains.
The restoration stopped because of an error about the creation of an account on mysql. It was a mess and I have decided to migrate all domains one by one.
My issues and questions :
I had php 5 and mysql 5 on the old server.
The defaults on the new one are php 7 and mysql 8. I have installed php 5 but it doesn’t seem to like mysql 8 for wordpress installation. I think I need to upgrade everything on the old server before the migration.
Question about DNS : when I migrate the dns records, the A records change to the new ip but the SOA and NS will remain on the old hostname. Should I change them manually ?
It seems there are some problems when testing sites. Sometimes when I test a site on the new server (before switching DNS) I see another virtual server but not the one I wanted to test. Somebody is aware of this issue ?
The Postfix is not running on the new server, can it be because of the restoration process of Virtualmin ? I don’t think so but I feel it is strange
Thanks for your help