The nginx web server is a fast, lightweight server designed to efficiently handle the needs of both low and high traffic websites. Although commonly used to serve static content, it's quite capable of handling dynamic pages as well. This guide will help you get nginx up and running with Perl and FastCGI on your Ubuntu 10.04 LTS (Lucid) Linux VPS.
It is assumed that you've already followed the steps outlined in our getting started guide. These steps should be performed via a root login to your Linode over SSH.
Contents
Before you begin installing and configuring the components described in this guide, please make sure you've followed our instructions for setting your hostname. Issue the following commands to make sure it is set properly:
hostname hostname -f
The first command should show your short hostname, and the second should show your fully qualified domain name (FQDN).
Issue the following commands to update your system and install the nginx web server and FastCGI components:
apt-get update apt-get upgrade apt-get install nginx spawn-fcgi libfcgi0ldbl
You'll also need to install fcgiwrap, which unfortunately isn't included in the Ubuntu 10.04 repositories. The version provided in Ubuntu 11.04 will be used instead; issue one of the following commands to download and install the required deb package, selecting either the 32-bit or 64-bit version as appropriate.
Commands:
wget http://mirrors.us.kernel.org/ubuntu//pool/universe/f/fcgiwrap/fcgiwrap_1.0.3-1_i386.deb dpkg -i fcgiwrap_1.0.3-1_i386.deb
Commands:
wget http://mirrors.us.kernel.org/ubuntu//pool/universe/f/fcgiwrap/fcgiwrap_1.0.3-1_amd64.deb dpkg -i fcgiwrap_1.0.3-1_amd64.deb
Create an "A" record pointing your domain name to your Linode's IP address. If you're using the Linode DNS Manager interface, please refer to our Linode DNS manager guide for instructions.
In this guide, the domain "example.com" is used as an example site. You should substitute your own domain name in the configuration steps that follow. First, create directories to hold content and log files:
mkdir -p /srv/www/www.example.com/public_html mkdir /srv/www/www.example.com/logs chown -R www-data:www-data /srv/www/www.example.com
Next, you'll need to define the site's virtual host file. This example uses a UNIX socket to connect to fcgiwrap. Be sure to change all instances of "example.com" to your domain name.
File:/etc/nginx/sites-available/www.example.com
server {
listen 80;
server_name www.example.com example.com;
access_log /srv/www/www.example.com/logs/access.log;
error_log /srv/www/www.example.com/logs/error.log;
root /srv/www/www.example.com/public_html;
location / {
index index.html index.htm;
}
location ~ \.pl$ {
gzip off;
include /etc/nginx/fastcgi_params;
fastcgi_pass unix:/var/run/fcgiwrap.socket;
fastcgi_index index.pl;
fastcgi_param SCRIPT_FILENAME /srv/www/www.example.com/public_html$fastcgi_script_name;
}
}
Alternately, you may wish to use TCP sockets instead. If so, modify your nginx virtual host configuration file to resemble the following example. Again, make sure to replace all instances of "example.com" with your domain name.
File:/etc/nginx/sites-available/www.example.com
server {
listen 80;
server_name www.example.com example.com;
access_log /srv/www/www.example.com/logs/access.log;
error_log /srv/www/www.example.com/logs/error.log;
root /srv/www/www.example.com/public_html;
location / {
index index.html index.htm;
}
location ~ \.pl$ {
gzip off;
include /etc/nginx/fastcgi_params;
fastcgi_pass 127.0.0.1:8999;
fastcgi_index index.pl;
fastcgi_param SCRIPT_FILENAME /srv/www/www.example.com/public_html$fastcgi_script_name;
}
}
If you elected to use TCP sockets instead of UNIX sockets, you'll also need to modify the fcgiwrap init script. Look for the following section in the /etc/init.d/fcgiwrap file:
File excerpt:/etc/init.d/fcgiwrap
# FCGI_APP Variables
FCGI_CHILDREN="1"
FCGI_SOCKET="/var/run/$NAME.socket"
FCGI_USER="www-data"
FCGI_GROUP="www-data"
Change it to match the following excerpt:
File excerpt:/etc/init.d/fcgiwrap
# FCGI_APP Variables
FCGI_CHILDREN="1"
FCGI_PORT="8999"
FCGI_ADDR="127.0.0.1"
FCGI_USER="www-data"
FCGI_GROUP="www-data"
Issue the following commands to enable the site:
cd /etc/nginx/sites-enabled/ ln -s /etc/nginx/sites-available/www.example.com
Start nginx and fcgiwrap by issuing the following commands:
/etc/init.d/fcgiwrap start /etc/init.d/nginx start
Create a file called "test.pl" in your site's "public_html" directory with the following contents:
File:/srv/www/www.example.com/public_html/test.pl
#!/usr/bin/perl
print "Content-type:text/html\n\n";
print <<EndOfHTML;
<html><head><title>Perl Environment Variables</title></head>
<body>
<h1>Perl Environment Variables</h1>
EndOfHTML
foreach $key (sort(keys %ENV)) {
print "$key = $ENV{$key}<br>\n";
}
print "</body></html>";
Make the script executable by issuing the following command:
chmod a+x /srv/www/www.example.com/public_html/test.pl
When you visit http://www.example.com/test.pl in your browser, your Perl environment variables should be shown. Congratulations, you've configured the nginx web server to use Perl with FastCGI for dynamic content!
You may wish to consult the following resources for additional information on this topic. While these are provided in the hope that they will be useful, please note that we cannot vouch for the accuracy or timeliness of externally hosted materials.
This guide is licensed under a Creative Commons Attribution-NoDerivs 3.0 United States License.
Last edited by Phil Paradis on Tuesday, May 10th, 2011 (r1827).