o.k you had me given a little remider - I'd forgot that stable is obselete and master is the right....
Is it possible without lost of data to downgrade to master? - if so, then I will this try.
Why nginx doesn'n know 127.0.0.1 do I not know, I've never done before somthing with this webserver.
The hostfile is o.k, the hostname is ok, it's a mystery for me, because the mariadb does right run with localhost...
And another info:
I've changed the port in the 00_master of nginx in 8888; now it redirects to 4443 and then nginx gives an error message or better http-Error 502 Bad gateway.
What this shold be completely eludes my knowledge - why do nginx need a gateway and where can this be set?
Remember - its a vServer (i would think its a virtual container) with a interface venet0 with the IP 127.0.0.1 and vemet0:0 witn the public IP given by the Server-Hoster.
Could it be, that nginx can not handle virtual environments without special configuration?