nginx configuration for multiple domain names - nginx

Question

I have just installed nginx and have more than one domain name pointing to same IP. When calling each domain I have to redirect to different applications running on the same machine, each application is running on different port.
For ex, I have app1.domain.com, app2.domain.com & app3.domain.com
so, for app1.domain.com I have to redirect to localhost:<port1>
likewise, app2.domain.com I have to redirect to localhost:<port2>
and app3.domain.com I have to redirect to localhost:<port3>
How do I go about?
Thanks in advance

Answer 1

Well if your application are running on different ports then your nginx conf files should look like this.
upstream app1 {
server 127.0.0.1:port1; #App1
}
upstream app2 {
server 127.0.0.1:port2; #app2
}
server {
listen xxx.xxx.xxx.xxx:80;
server_name app1.domain.com;
access_log /var/log/nginx/log/app1.domain.com.access.log main;
error_log /var/log/nginx/log/app1.domain.com.error.log;
root /usr/share/nginx/html;
index index.html index.htm;
## send request back to apache1 ##
location / {
proxy_pass http://app1;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
proxy_redirect off;
proxy_buffering 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;
}
}
server {
listen xxx.xxx.xxx.xxx:80;
server_name app2.domain.com;
access_log /var/log/nginx/log/app2.domain.com.access.log main;
error_log /var/log/nginx/log/app2.domain.com.error.log;
root /usr/local/nginx/html;
index index.html;
location / {
proxy_pass http://app2;
proxy_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
proxy_redirect off;
proxy_buffering off;
proxy_set_header Host app2.domain.com;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}
}
Please let me know if you have any doubts.
Thanks