Optimized LEMP Installer for Debian/Ubuntu with Virtual Hosts Automator.

LAMP stacks are used widely but they are notorious for being less resource friendly and in the same time, incredibly attracting to script kiddies and part time crackers.

There's a tradition to play with most popular toys rather than one which was designed to be small and less expensive. As a kid, what would you like to steal in a kindergarten: a Spider-Man toy or a small spider miniature?
Leaving aside these arguments, let's move on to the real-valued part. I wrote this script which I think, has the following featured jobs:(Some literary art)

• Configures Nginx for performance and static file caching as well as gzipping the output.
• Installs and PHP-FPM as well as PHP-APC for Opcode Caching
• Optimizes MySQL for caching queries, while being light on resources.
• Facilitates interactive virtual hosts creation with dedicated PHP-FPM pool for each user so that each PHP process runs as the owner. This eliminates the need to install FTP server for updating Wordpress or installing plugins. Since, PHP runs as the user owning the script, "wp-config" can be set to very strict permissions like 700.

There's even more...

• Virtual hosts generation script also has the ability to create MySQL user and database as well as allowing user to import SQL file onto the newly created database for easy migration.
• PHPMyAdmin installer is also built-in which allows PHPMyAdmin to be installed on specified domain or sub-domain. 
• This script uses unix sockets instead of TCP which promises some more improvement and lowers TCP overhead within the system. 
• I have implemented some security practices like "cgi.fixpath_info=0". 

Download the script here and run it as root:

wget https://raw.github.com/aatishnn/lempstack/master/lemp-debian.sh
chmod +x lemp-debian.sh
./lemp-debian.sh

This script works for me but I cannot guarantee that it will work for you too. I am not a Bash expert. Please add some regexp to your brain to ignore my scripting laziness. This is designed to work with Debian and Ubuntu. You may freely use it to suit your needs under the condition that you will thank me. I would be glad if you can share something about this script, test it, debug it or just scold, rebuke or criticize.

Setup Static IP Address on Debian 6 (Squeeze)

During installation, Debian uses DHCP by default.You should disable DHCP feature for primary network interface by editing /etc/network/interfaces
By default, it looks like following:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo
inet loopback


# The primary network interface
allow-hotplug eth0
iface eth0 inet dhcp

We should make this look like:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo
inet loopback


# The primary network interface
#allow-hotplug eth0
#iface eth0 inet dhcp
auto eth0
iface eth0 inet static
address 192.168.1.100
netmask 255.255.255.1
network 192.168.1.0
broadcast 192.168.1.255
gateway 192.168.1.1

You may not need to enter network and broadcast details.
Now, restart service by 

/etc/init.d/networking restart

Fully Qualified Domain Name on Debian Squeeze

Debian uses a simple FQDN approach by getting the values from hosts file.So, if you would like to set up ns1.example.com as a FQDN for your server, then modify /etc/hosts file so it looks like

127.0.0.1 localhost
127.0.1.1 ns1.example.com ns1

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts

Other values may depend on your system.