I installed odoo in amazon EC2 and configured nginX with an elastic IP (public/static). I can access odoo using just my elastic IP address (xx.xx.xxx.xx) without using the 8069 port number. For that I know nginX working properly. 

I have a domain name registered with namecheap and I pointed that to my server IP (elastic IP). but when I try my domain name (domain.xyz) it shows me the default "Welcome ro nginx page" rather than my odoo page.

How can I solve this?

Also I want to use two FQDN (domain.xyz & example1.com) for 2 different odoo database. I know there are options like --db-filter='^%d' for Host name and --db-filter='^%h' for full domain name filtering. but coudnt find any guide for doing it using nginX. How can I achieve this with nginx.

Always appreciates community help.