Therefore I have to switch the A-Record I think, because I use vhosts for multiple domains. I have no idea if I can check them only by IP address. The MX-record (+DKIM, SPF…) points also to this server.
I don’t use custom templates, but nextcloud and webtop with integration issues.
I suspected that I had deleted too much per yum autoremove and hope to get a fresh installation by this way. I had excluded the path /var/lib/nethserver/webtop from backup especially to get a fresh installation.
… it’s a trie. But the main system must be operable if I switch the A-Record.
For me, the big unknown is basically whether the installation of software packages will include the necessary paths in the backup. Unfortunately, the respective manuals silent about this.