Web Application on Erlang: Configure Nginx with Mochiweb
My previous post, the first of our series dedicated to the Erlang world, was definitively getting too long, so here is the second chapter of this marvelous article.
I’ll assume that you have successfully installed Erlang and Mochiweb and deployed your first small tiny app.
When it comes to deliver static content at lightning speed and do reverse proxy job, there is one name : Nginx, the Igor Sysoev high-performance HTTP server.
It plays well with ssl and in the last dev version you can even find an interesting module for uploading files, nothing less … we will probably tell you more about that in the series.
Nginx is really turning itself into a real handy swiss knife.
Step 0 - SSL packages check
So let’s start by ensuring that the ssl packages are already installed on your box :
foo@bar:~$ sudo apt-get install openssl libssl-devStep 1 - Install Nginx
Now, we are ready to download, compile and install Nginx.
Here, we want to install the last stable version (0.6.32).
foo@bar:~$ sudo apt-get build-dep nginx
foo@bar:~$ wget http://sysoev.ru/nginx/nginx-0.6.32.tar.gz
foo@bar:~$ tar -zxvf nginx-0.6.32.tar.gz
foo@bar:~$ cd nginx-0.6.32
foo@bar:~/nginx-0.6.32$ ./configure –with-http_ssl_module
foo@bar:~/nginx-0.6.32$ make && sudo make installDone.
Step 2 - Nginx configuration
We do have now to tell Nginx what to proxy, in our case http://my_server_name:8000 (in the previous post, remember?)
You can find the Nginx configuration file, nginx.conf, under /usr/local/nginx/conf/.
Here is a working example one :
Discover the code in Friendpaste
user www-data;
worker_processes 4;
...
http {
include mime.types;
...
upstream mochiweb {
server my_server_name:8000;
}
server {
listen 80;
server_name my_server_name;
...
location / {
root path_to_myapp/myapp/priv/www;
index index.html index.htm;
...
if (!-f $request_filename) {
proxy_pass http://mochiweb;
break;
}
}
}
}
Step 3 - Start, Stop Nginx
Finally, we are going to tell Ubuntu how to start and stop the server.
Just create a new file named ‘nginx’ in /etc/init.d and paste the content of this link:
Discover the code in Friendpaste
foo@bar:~/nginx-0.6.32$ cd /etc/init.d
foo@bar:~/etc/init.d$ sudo vi nginxAbove, for those of you who are not in love with vi, you can use nano instead: sudo nano nginx
foo@bar:~/etc/init.d$ sudo chmod +x nginx
foo@bar:~/etc/init.d$ sudo update-rc.d nginx defaults
foo@bar:~/etc/init.d$ sudo ./nginx startCool, you have now a working reverse proxy.
foo@bar:~/etc/init.d$ cd ~/myapp
foo@bar:~/myapp$ ./start-dev.shBrowse this link http://my_server_name
Peace!
As a reminder, the next points we will discuss are:
- The basic configuration of Postfix (mail)
- The use of Imagemagick to create dynamically a captcha for your application
- The configuration of Bind9 in order to play with the url CNAME
So, stay tuned
