nginx\default.conf

upstream app-a {
    server tomcat1:8080;
}

upstream app-b {
    server tomcat2:8080;
}

server {
        listen 80;
        server_name test1.com www.test1.com;

        location / {
            proxy_pass         http://app-a;
            proxy_redirect     off;
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   X-Forwarded-Host $server_name;

        }
}

server {
        listen 80;
        server_name test2.com www.test2.com;

        location / {
            proxy_pass         http://app-b;
            proxy_redirect     off;
            proxy_set_header   Host $host;
            proxy_set_header   X-Real-IP $remote_addr;
            proxy_set_header   X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header   X-Forwarded-Host $server_name;

        }
}