No such file or directory: AH02291: Cannot access directory '/var/log/apache2

sudo mkdir /var/log/apache2/
sudo touch /var/log/apache2/{access,error,other_vhosts_access,suexec}.log
sudo chown -R root:adm /var/log/apache2/
sudo chmod -R 750 /var/log/apache2

sudo service apache2 restart

Как узнать версию Apachе, MySQL, PHP на Ubuntu

apache:
host:~$ apache2 -v

mysql:
select version()

php:
host:~$ php5 -v

Link

Как включить mod_rewrite на LAMP сервере ubuntu

sudo a2enmod rewrite
sudo a2enmod headers
проверяем
ls -l /etc/apache2/mods-enabled/rewrite.load
редактируем
sudo nano /etc/apache2/sites-available/default

update

На версии apache 2.4.7 (узнать версию apache, команда apache2 -v ) файл 
nano /etc/apache2/sites-available/000-default.conf
Сохраняем файл и перезапускаем apache
AllowOverride All 
sudo service apache2 restart
default переименовали в 000-default.conf добавляем в него 

http://stackoverflow.com/questions/19915241/apache-2-4-6-default-conf-format-changed-unable-to-run-htaccess 

No data was received to import. Either no file name was submNo data was received to import.

No data was received to import. Either no file name was submNo data was received to import.  Either no file name was submitted, or the file size exceeded the maximum size permitted by your PHP configuration.itted, or the file size exceeded the maximum size permitted by your PHP configuration.

Идем в /etc/php5/apache2/php.ini

Находим:

; Maximum allowed size for uploaded files.
upload_max_filesize = 2M

меняем на 32М, максимум можно 128

Перезапукаем 

sudo /etc/init.d/apache2 reload 

Ubuntu перезапуск Apache

sudo /etc/init.d/apache2 restart