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Thursday, July 5, 2012

How to configure a LAMP server on Ubuntu 10.04

A LAMP server refers to Linux, Apache, MySQL, PHP or Python. Assuming you have already got a Ubuntu 10.04 (LINUX) machine up and running lets first install an Apache server.
sudo apt-get install apache2

Before we proceed with setting up apache lets set up the hosts file, this file holds ip mappings to machine names.
sudo gedit /etc/hosts

You will see something like this
127.0.0.1	localhost.localdomain	localhost

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


Add the line 127.0.0.1 test-site-name.local to make it look something like this, i have used the name "ccl" in this example
127.0.0.1	localhost.localdomain	localhost
127.0.0.1 	ccl.local		z3d-laptop

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


Now when you are done setting up the hosts file, we'll now configure virtual hosting so that we can host multiple domains (or subdomains) with the server.
cd /etc/apache2/sites-available

Once in the directory lets make setup our virtual host, for this we'll use the template provided by apache. This file is named default. Create a copy of the file first.
sudo cp default your-site-name

Now open the file you just created (by copying) for editing
sudo gedit your-site-name

This should open something similar to this
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<VirtualHost *:80>
    ServerAdmin webmaster@localhost

    DocumentRoot /var/www
    <Directory />
        Options FollowSymLinks
        AllowOverride None
    </Directory>
    <Directory /var/www/>
        Options Indexes FollowSymLinks MultiViews
        AllowOverride None
        Order allow,deny
        allow from all
    </Directory>

    ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
    <Directory "/usr/lib/cgi-bin">
        AllowOverride None
        Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
        Order allow,deny
        Allow from all
    </Directory>

    ErrorLog /var/log/apache2/error.log

    # Possible values include: debug, info, notice, warn, error, crit,
    # alert, emerg.
    LogLevel warn

    CustomLog /var/log/apache2/access.log combined

    Alias /doc/ "/usr/share/doc/"
    <Directory "/usr/share/doc/">
        Options Indexes MultiViews FollowSymLinks
        AllowOverride None
        Order deny,allow
        Deny from all
        Allow from 127.0.0.0/255.0.0.0 ::1/128
    </Directory>

</VirtualHost>

 

In this file add the line ServerName test-site-name.local just above the DocumentRoot directive (in front of line 4). Edit DocumentRoot /var/www path on line 4 and set it to /path-to-the-test-site-WITHOUT-trailing-slash. It should look something like this
DocumentRoot /path-to-the-test-site-WITHOUT-trailing-slash

Edit path on line 9 and set it to /path-to-the-test-site-WITH-trailing-slash/. It should look something like this
 Directory /path-to-the-test-site-WITH-trailing-slash/ 

Please Note: Be careful regarding where there is a trailing slash where there is none. Also change
AllowOverride None

to
AllowOverride All

for the first two directory nodes (the / one and the one with the path to your site). That will allow all the .htaccess files to work properly and allow redirection.
Now we are almost done, we just need to enable the site
sudo a2ensite test-site-name 
sudo /etc/init.d/apache2 restart

In the next step lets configure and install MySQL
apt-get install mysql-server 

when prompted for a password choose one and save it for future reference Note the configuration file for MySQL is located at /etc/mysql/my.cnf we will not be modifying it but you should know it for future reference. Running the next command is recommended for securing your server, especially if it is a production server. When you will run the command you will be prompted for many things answering them with a yes is recommended.
mysql_secure_installation 

Next lets create a database and grant control to a user
mysql -u root -p 
create database test-db;
grant all on test-db.* to 'zed' identified by 'password';
flush privileges;
quit

Note: The semicolons are important and identify end of MySQL commands. In the above case a database with the name of test-db has been created and the user zed has been granted full control over it. The password for the user is password. You can keep any password that you like. With Apache and MySQL installed we are now ready to move on to installing PHP. Install php
apt-get install php5 php-pear

If you are not experienced with PHP the following configurations are useful for more detailed logging and better performance
sudo gedit /etc/php5/apache2/php.ini

Change the fields as shown below
max_execution_time = 30
memory_limit = 64M
error_reporting = E_COMPILE_ERROR|E_RECOVERABLE_ERROR|E_ERROR|E_CORE_ERROR
display_errors = Off
log_errors = On
error_log = /var/log/php.log
register_globals = Off

Now restart Apache
sudo /etc/init.d/apache2 restart

if you need MySQL support in PHP then install the following package
apt-get install php5-mysql
apt-get install php5-suhosin

The second package is a recommended package for security, it provided additionally security for PHP Restart Apache to make sure everything is correct
sudo /etc/init.d/apache2 restart

Wola! Your lamp server is now configured and good to go! :)

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