One server multiple sites problem

Thank you for this explicit answer.

I ahve 4 website, 2 is online on hostvision.ro server:
plant-shop.ro
naturaldeco.ro
Plus suculente.ro and perene.ro, this 2 i want to test my new server.
My server is a Dell with Xeon, and 16 GB Ram, and i installed Centos 6.5 + nginx + ISPConfig 3, following the guide from here, the only difference is the guide is for Centos 6.4.
I decided to install nginx, after i read some reviews about this fast webserver.
Maybe i will try with apache webserver.

Now i thinking to reinstall everything, or try to repair, my error.
Anyway thank you for helping me to all community from this forums. You do a great job.

 

What I usually do is :
- name my server (ie : levvikinghost.net), the domain has to be declared by a Registar.
- to manage DNS, usually 2 IPs are required (you need to ask your hosting company for a second IP).
- by the Registar, you declare ns1.levvikinghost.net (your 1st server IP) and ns2.levvikinghost.net (with your 2nd server IP)
- then all domain you want to host will be defined by ns1.levvikinghost.net and ns2.levvikinghost.net
- now it's just time to setup DNS/Websites/etc... in your ISPConfig for these domains.
Nicolas