Subdomain in nginx not working

Going to have to see your config file - at least the important parts.

server { <br> listen 80 default_server; <br> listen [::]:80 default_server ipv6only=on; <br> <br> root /usr/share/nginx/html/main; <br> index index.html index.htm index.php; <br> <br> # Make site accessible from http://localhost/ <br> server_name localhost; <br> include hhvm.conf; <br> <br> location / { <br> # First attempt to serve request as file, then <br> # as directory, then fall back to displaying a 404. <br> try_files $uri $uri/ /index.html; <br> # Uncomment to enable naxsi on this location <br> # include /etc/nginx/naxsi.rules <br> } <br> <br> location /doc/ { <br> alias /usr/share/doc/; <br> autoindex on; <br> allow 127.0.0.1; <br> allow ::1; <br> deny all; <br> } <br>} <br> <br>server { <br> listen 80; <br> listen [::]:80; <br> <br> root /usr/share/nginx/html/api; <br> index index.html index.htm index.php; <br> <br> # Make site accessible from http://localhost/ <br> server_name api.airiverse.com; <br> include hhvm.conf; <br>} <br>

Your configuration looks fine. But maybe you get error because of listen [::]:80 default_server ipv6only=on; and listen [::]:80; are enabled which are for ipv6. DO currently don’t support ipv6. Try to comment those 2 and restart nginx. Also have you added the subdomain in your DNS?