Nginx server configuration for subdomains

Nginx subdomains config

upstream project {
    server 127.0.0.1:3000;
}

server {
    listen       80;
    server_name  mysite.com;

    location / {
        proxy_pass http://project;
        proxy_http_version 1.1;
        proxy_set_header Host      mysite.com;
    }
}

server {
    listen       80;
    server_name  subdomain.mysite.com;

    location / {
        proxy_pass http://project;
        proxy_http_version 1.1;
        proxy_set_header Host      subdomain.mysite.com;
    }
}