trailing slash at end URL with nginx as a reverse proxy for multiple website

[Nguyen Hai Nam]

 Hi,

I'm running OpenIndiana 151a server then now I'd like to build the web
service with nginx. Briefly, my scenario is: one central server installed a
few website in virtual machines, and there is a different real machine that
stores static contents. I want nginx in central server will be the reverse
proxy (get idea from
http://tumblr.intranation.com/post/766288369/using-nginx-reverse-proxy).

For example, if someone open website a.com, it will be redirected to
10.0.0.2:8001, and if other go to b.com it will be redirected to
10.0.0.3:8001, etc ...

server {
    listen       80;
    server_name  a.com;

    location / {
        proxy_pass         http://10.0.0.2:8001;
        proxy_redirect     off;
        server_name_in_redirect off;
    }
}

Nginx works fine, but I don't know how to rewrite/redirect the URL looks
like: http://a.com/something becomes http://a.com/something/

If someone open the link http://a.com/something nginx can't serve it then
return the error message that says "http://a.com:8001/something"
unreachable.

If you have any advice, please tell. It's highly appreciated.

Thanks,
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