Restarting apache2 (via systemctl): apache2.serviceJob for apache2.service failed because the control process exited with error code.

 

sudo /etc/init.d/apache2 restart    not starting

There is some syntax error in the file apache2.conf.

In a terminal, type:

cd /etc/apache2

Then:

apache2ctl configtest

Cannot load modules/mod_rewrite.so into server: /etc/apache2/modules/mod_rewrite.so: cannot open shared object file: No such file or directory

Enabling mod_rewrite

Now, we need to activate mod_rewrite.

sudo a2enmod rewrite

This will activate the module or alert you that the module is already in effect. To put these changes into effect, restart Apache.

sudo service apache2 restart

for 

LoadModule vhost_alias_module /usr/lib/apache2/modules/mod_vhost_alias.so

sudo a2enmod vhost_alias

Where is httpd.conf?

 

Ubuntu and debian   

/etc/apache2/apache2.conf

Centos and redhat

/etc/httpd/conf/httpd.conf

 

Creating a new user on ubuntu

sudo adduser <username>

to add this user to group

sudo addsuer <username> sudo