There's a tutorial for getting a LEMP stack up and running:

https://www.digitalocean.com/community/articles/how-to-install-linux-nginx-mysql-php-lemp-stack-on-ubuntu-12-04

In that tutorial, you'll get MySql and php set up to work with Nginx. There's also a quick tutorial on getting phpMyAdmin working with the LEMP stack here:

https://www.digitalocean.com/community/articles/how-to-install-phpmyadmin-on-a-lemp-server/

Thank you for the reply, the condition is not as simple as the tutorial.

While I type in "sudo ln -s /usr/share/phpmyadmin/ /usr/share/nginx/www",
I get the error as,

ln: failed to create symbolic link '/usr/share/nginx/www/phpmyadmin': File exists

How can I fix it?

It sounds like you already did it. What's the output of:

ls /usr/share/nginx/www/phpmyadmin

Have you tried to access http://your.ip.address/phpmyadmin ?

Thanks for the hint, but there is no luck.
"ls /usr/share/nginx/www/phpmyadmin" got lots of files listed.

When I enter http://my_ip/phpmyadmin

The error message shows up as,

404 Not Found

There must be something wrong. Should I set up something else?

This assumes that you have "/usr/share/nginx/www/" set as the root directory for your Nginx server block. The file "/etc/nginx/sites-enabled/default" should have a section that looks like:

server {

        listen   80;



        root /usr/share/nginx/www;

On newer version of Ubuntu the root might be "/usr/share/nginx/html" In that case you'd need to link phpmyadmin there instead.

Could you pastebin your Nginx configuration?