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Apache2 web server on Feisty

Apache2 installation on feisty is just one line 'sudo aptitude install apache2'.
pnix@pnix-a7n:~$ sudo aptitude install apache2
Password:
Reading package lists... Done
Building dependency tree     
Reading state information... Done
Reading extended state information
Initializing package states... Done
Building tag database... Done      
The following NEW packages will be automatically installed:
  apache2-mpm-worker apache2-utils apache2.2-common libapr1 libaprutil1
The following NEW packages will be installed:
  apache2 apache2-mpm-worker apache2-utils apache2.2-common libapr1 libaprutil1
0 packages upgraded, 6 newly installed, 0 to remove and 0 not upgraded.
.
.
Setting up apache2-mpm-worker (2.2.3-3.2ubuntu0.1) ...

 * Starting web server (apache2)...             
apache2: Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName                                    [ OK ]

Setting up apache2 (2.2.3-3.2ubuntu0.1) ...
pnix@pnix-a7n:~$
I fix the “Could not reliably determine the server's fully qualified domain name, using 127.0.1.1 for ServerName
” warning message by add “ServerName <myservername>” to '/etc/apache2/apache2.conf'.
Another thing is apache use 127.0.1.1 instead of 127.0.0.1. In '/etc/hosts' file it has a line state that 
127.0.1.1 <myservername>
I just change 127.0.1.1 to 127.0.0.1.
Now try to restart apache2 again. The warning message will be gone.
pnix@pnix-a7n:~$ sudo apache2 -k restart
Password:
pnix@pnix-a7n:~$


Note: I just know that the address 127.0.0.1 to 127.255.255.254 are all loopback address.

Now for php
pnix@pnix-a7n:www$ sudo aptitude install php5
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Reading extended state information      
Initializing package states... Done
Building tag database... Done      
The following NEW packages will be automatically installed:
  apache2-mpm-prefork libapache2-mod-php5 php5-common 
The following packages will be automatically REMOVED:
  apache2-mpm-worker 
The following NEW packages will be installed:
  apache2-mpm-prefork libapache2-mod-php5 php5 php5-common 
The following packages will be REMOVED:
  apache2-mpm-worker 
0 packages upgraded, 4 newly installed, 1 to remove and 0 not upgraded.
Need to get 3184kB of archives. After unpacking 6324kB will be used.
Do you want to continue? [Y/n/?] y
.
.
Creating config file /etc/php5/apache2/php.ini with new version

 * Forcing reload of web server (apache2)...                           [ OK ] 



Setting up php5 (5.2.1-0ubuntu1.4) ...

pnix@pnix-a7n:www$

Time to test
Now I will create the most popular php testing script in the world, yes, phpinfo(). Use any text editor create a file called phptest.php that have one line '' then move it to web root directory[/var/www by default]. Open web browser and goto 'http://myservername/phptest.php'. If everything is ok you should see something like this.
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