Configure CloudLinux software, PHP and mod_lsapi on a server with no control panel

This is a practical manual of setting up Apache + mod_lsapi + CageFS + PHP Selector on a server with no panel installed.

It is assumed that our system has been converted and loaded with CloudLinux kernel. Since PHP Selector installation requires CageFS and LVE Manager installed in the system, let's start with CageFS installation:

# yum install cagefs

Next we'll need to install LVE Manager:

# yum install lvemanager

Then install Apache and native PHP:

# yum install httpd
# yum install php-cli

Then install mod_lsapi:

# yum install liblsapi liblsapi-devel
# yum install mod_lsapi

Finally, install PHP Selector:

# yum groupinstall alt-php

Now let's configure components. Initialize CageFS and enable for all users:
# cagefsctl --init
# cagefsctl --enable-all
Initialize mod_lsapi (few errors will appear, this is normal, please ignore them):
# /usr/bin/switch_mod_lsapi --setup
Enable mod_lsapi PHP handler:
# sed -i 's/#AddType/AddType/' /etc/httpd/conf.d/lsapi.conf
Update CageFS skeleton:
# cagefsctl --force-update

We also need to open access to 80 port:

# firewall-cmd --zone=public --permanent --add-port=80/tcp
# firewall-cmd --reload

Now we are ready to set up a website. Let's create user first:
# adduser cltest1
Change home directory permissions to allow httpd access it:
# chmod 711 /home/cltest1
Create required directories:
# su cltest1 -c "mkdir ~/public_html{,/logs,/cgi-bin}"

Finally, let's add website to Apache configuration. Create a file /etc/httpd/conf.d/vhosts.conf with the following contents:

<VirtualHost *:80>
  ServerName default
  DocumentRoot /var/www/html
</VirtualHost>
<VirtualHost *:80>
  ServerAdmin [e-mail]
  DocumentRoot "/home/cltest1/public_html"
  ServerName example.com
  ServerAlias www.example.com
  ErrorLog "/home/cltest1/public_html/logs/error.log"
  CustomLog "/home/cltest1/public_html/logs/access.log" common
  ScriptAlias /cgi-bin/ "/home/cltest1/public_html/cgi-bin/"
  SuexecUserGroup cltest1 cltest1
  <Directory "/home/cltest1">
    AllowOverride All
  </Directory>
  <Directory "/home/cltest1/public_html/cgi-bin">
    AllowOverride None
    Options None
  </Directory>
</VirtualHost>

Please note, first VirtualHost must be defined only once, it will be used for requests that didn't match any other VirtualHost.

Make sure that mod_php is disabled since it's not compatible with PHP Selector:

apachectl -M | grep php

You need to disable it if you see php7_module or a similar module in the output.

Everything is ready now. Restart Apache httpd:
# systemctl restart httpd.service

You can now use selectorctl utility to select PHP versions for your users.