You aren't currently able to install the software. Please see below for details.
If you are having problems meeting the requirements, see the server requirements.

Your php.ini file is located at /etc/php55/apache2/php.ini

Requirements Step 1 of 5

PHP Configuration Show All Requirements All Requirements Pass but 1 Warning
PHP5 installedOK (PHP version 5.5.38-nmm2)
GD2 supportOK
XML supportOK
DOM/XML supportOK
SimpleXML supportOK
Tokenizer supportOK
CType supportOK
Session supportOK
iconv supportOK
hash supportOK
mbstring supportOK
Reflection supportOK
SPL supportOK
date.timezone setting and validityOK (Europe/Berlin)
fileinfo supportOK
curl supportOK
tidy supportOK
asp_tags optionOK
magic_quotes_gpc optionOK
display_errors optiondisplay_errors is set to '1' in php.ini. Unless you're in a development environment, this should be turned off, as it can expose sensitive data to website users.
arg_separator.output optionOK
Memory allocation (PHP config option 'memory_limit')OK (64M)
File permissions Show All Requirements 4 Failed and 0 Warnings
Does the webserver know where files are stored?OK (/www/htdocs/w00c7509/silverstripe-v2.4.0-rc1/)
mysite/ directory exists?OK
framework/ directory exists?OK
Is the .htaccess file writeable?User 'www-data' needs to be able to write to this file:
/www/htdocs/w00c7509/silverstripe-v2.4.0-rc1/.htaccess

The file is currently owned by 'w00c7509'. There is no user-group that contains both the web-server user and the owner of this file. Change the ownership of the file, create a new group, or temporarily make the file writeable by everyone during the install process.
Is the mysite/_config.php file writeable?User 'www-data' needs to be able to write to this file:
/www/htdocs/w00c7509/silverstripe-v2.4.0-rc1/mysite/_config.php

The file is currently owned by 'w00c7509'. There is no user-group that contains both the web-server user and the owner of this file. Change the ownership of the file, create a new group, or temporarily make the file writeable by everyone during the install process.
Is the mysite/_config/config.yml file writeable?User 'www-data' needs to be able to write to this file:
/www/htdocs/w00c7509/silverstripe-v2.4.0-rc1/mysite/_config/config.yml

The file is currently owned by 'w00c7509'. There is no user-group that contains both the web-server user and the owner of this file. Change the ownership of the file, create a new group, or temporarily make the file writeable by everyone during the install process.
Is the assets/ directory writeable?User 'www-data' needs to be able to write to this file:
/www/htdocs/w00c7509/silverstripe-v2.4.0-rc1/assets

The file is currently owned by 'w00c7509'. There is no user-group that contains both the web-server user and the owner of this file. Change the ownership of the file, create a new group, or temporarily make the file writeable by everyone during the install process.
Is a temporary directory available?OK (/tmp/silverstripe-cache-php5.5.38-nmm2-www-htdocs-w00c7509-silverstripe-v2.4.0-rc1/www-data)
Is the temporary directory writeable?OK
Webserver Configuration Show All Requirements All Requirements Pass
Webserver is not Apache 1.xOK (Apache)
Server softwareOK (Apache)
URL rewriting supportOK
Recognised webserverOK
POST SupportOK
Database Configuration Show All Requirements 1 Failed and 0 Warnings
Database supportOK (MySQL)
Database serverI couldn't find a database server on 'localhost': Access denied for user 'root'@'localhost' (using password: NO)

Read more about our server requirements.

Database Configuration Step 2 of 5

Database supportOK (MySQL)
Database serverI couldn't find a database server on 'localhost': Access denied for user 'root'@'localhost' (using password: NO)

SilverStripe stores its content in a relational SQL database. Please provide the username and password to connect to the server here. If this account has permission to create databases, then we will create the database for you; otherwise, you must give the name of a database that already exists.

Other databases:
Databases in the list that are greyed out cannot currently be used. Click on them for more information and possible remedies.

CMS Admin Account Step 3 of 5

We will set up the first administrator account for you automatically. You can change these details later in the "Security" section within the CMS.

"Default language" determines the default locale settings (for dates, currencies, etc.), as well as the default language of the CMS interface. This can be changed for each user.
Warning: The CMS interface may be missing translations in certain locales.

Theme selection Step 4 of 5

You can change the theme or download another from the SilverStripe website after installation.

Confirm Install Step 5 of 5

You aren't currently able to install the software. Please see above for details.
If you are having problems meeting the requirements, see the server requirements page.