Introduction

The focus of this howto is for those users who need to host their own domains and maybe a few customer domains. This is not aimed at being used for mass web hosting.

There are many ways to do virtual websites under linux. The technique I am going to use is multiple domains on one ip address. I’m using standard linux users to log into the virtual domains.

Setting Up The Base Server

For a dedicated server start with the base server setup:

NOTE: If you don’t follow the base server setup then you may run into problems with this howto.

Install Software

We need to install an FTP server and Let’s Encrypt. So type the following:
> sudo add-apt-repository ppa:certbot/certbot
> sudo apt update
> sudo apt install vsftpd python-certbot-apache

Setup Default User Directory

A new user’s directory needs to have some files and folders created for them.  We will modify the user skel directory so when a new user is created the required folder structure will be there.

Type the following.
> sudo mkdir -p /etc/skel/{website,logs,cgi-bin,backup}
> sudo echo “HELLO WORLD” > /etc/skel/website/index.html

Configuring vsftpd

Lets create the configuration file.  Replace the contents of /etc/vsftpd.conf with the text below.

listen=NO
listen_ipv6=YES
anonymous_enable=NO
local_enable=YES
write_enable=YES
#local_umask=022
dirmessage_enable=YES
use_localtime=YES
xferlog_enable=YES
connect_from_port_20=YES
chroot_local_user=YES
secure_chroot_dir=/var/run/vsftpd/empty
pam_service_name=vsftpd
rsa_cert_file=/etc/ssl/certs/ssl-cert-snakeoil.pem
rsa_private_key_file=/etc/ssl/private/ssl-cert-snakeoil.key
ssl_enable=NO
allow_writeable_chroot=YES
pasv_enable=Yes
pasv_min_port=40000
pasv_max_port=40100

Start vsftpd.
> sudo systemctl enable vsftpd
> sudo systemctl start vsftpd.service

Configuring Apache

Most of the apache configuration is already done.  We are going to do some changes to make managing websites easier.

Create the virtual host config file. I defined macros to make virtual host creation easier.  I also turn on compression. Create /etc/apache2/conf-available/virtual.conf with the following:

# Go ahead and accept connections for these vhosts
# from non-SNI clients
SSLStrictSNIVHostCheck off

# define a macro for the virtual hosts
# the user's directory should be setup as follows:
# |- cgi-bin
# |- logs
# |- website
# |- ssl
#
LoadModule macro_module modules/mod_macro.so

<Macro virtHost $type $user $host>
    use $type $host

    ServerName $host
    ServerAlias www.$host 
    DocumentRoot /home/$user/website
    ScriptAlias "/cgi-bin/" "/home/$user/cgi-bin"
    LogFormat "%h %l %u %t \"%r\" %>s %b" common
    CustomLog /home/$user/logs/access_log common
    ErrorLog /home/$user/logs/error_log
    <Directory /home/$user/website>
      DirectoryIndex index.html index.php
      Options Indexes FollowSymLinks
      AllowOverride All
      Require all granted

      # setup file compression
      use CompressFiles

      # setup browser caching
      use BrowserCache

      # disable hotlinking for some files
      use DisableHotLink $host
    </Directory>
  </VirtualHost>
</Macro>

<Macro BrowserCache>
  # Enable expires cache
  <IfModule mod_expires.c>
    ExpiresActive On
    ExpiresByType text/css "access 1 month"
    ExpiresByType text/html "access 1 month"
    ExpiresByType image/gif "access 1 year"
    ExpiresByType image/png "access 1 year"
    ExpiresByType image/jpg "access 1 year"
    ExpiresByType image/jpeg "access 1 year"
    ExpiresByType image/x-icon "access 1 year"
    ExpiresByType application/pdf "access 1 month"
    ExpiresByType application/javascript "access 1 month"
    ExpiresByType text/x-javascript "access 1 month"
    ExpiresDefault "access 1 month"
  </IfModule>

  # Cache-Control Headers
  <ifModule mod_headers.c>
    <filesMatch "\.(ico|jpe?g|png|gif|swf)$">
      Header set Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(css)$">
      Header set Cache-Control "public"
    </filesMatch>
    <filesMatch "\.(js)$">
      Header set Cache-Control "private"
    </filesMatch>
    <filesMatch "\.(x?html?|php)$">
      Header set Cache-Control "private, must-revalidate"
    </filesMatch>
  </ifModule>
</Macro>

<Macro CompressFiles>
  # enable compression
  <IfModule mod_deflate.c>
    AddOutputFilterByType DEFLATE "application/atom+xml"
    AddOutputFilterByType DEFLATE "application/javascript"
    AddOutputFilterByType DEFLATE "application/json"
    AddOutputFilterByType DEFLATE "application/ld+json"
    AddOutputFilterByType DEFLATE "application/manifest+json"
    AddOutputFilterByType DEFLATE "application/rdf+xml"
    AddOutputFilterByType DEFLATE "application/rss+xml"
    AddOutputFilterByType DEFLATE "application/schema+json"
    AddOutputFilterByType DEFLATE "application/vnd.geo+json"
    AddOutputFilterByType DEFLATE "application/vnd.ms-fontobject"
    AddOutputFilterByType DEFLATE "application/x-font"
    AddOutputFilterByType DEFLATE "application/x-font-opentype"
    AddOutputFilterByType DEFLATE "application/x-font-otf"
    AddOutputFilterByType DEFLATE "application/x-font-truetype"
    AddOutputFilterByType DEFLATE "application/x-font-ttf"
    AddOutputFilterByType DEFLATE "application/x-javascript"
    AddOutputFilterByType DEFLATE "application/x-web-app-manifest+json"
    AddOutputFilterByType DEFLATE "application/xhtml+xml"
    AddOutputFilterByType DEFLATE "application/xml"
    AddOutputFilterByType DEFLATE "font/eot"
    AddOutputFilterByType DEFLATE "font/otf"
    AddOutputFilterByType DEFLATE "font/ttf"
    AddOutputFilterByType DEFLATE "font/opentype"
    AddOutputFilterByType DEFLATE "image/bmp"
    AddOutputFilterByType DEFLATE "image/svg+xml"
    AddOutputFilterByType DEFLATE "image/vnd.microsoft.icon"
    AddOutputFilterByType DEFLATE "image/x-icon"
    AddOutputFilterByType DEFLATE "text/cache-manifest"
    AddOutputFilterByType DEFLATE "text/css"
    AddOutputFilterByType DEFLATE "text/html"
    AddOutputFilterByType DEFLATE "text/javascript"
    AddOutputFilterByType DEFLATE "text/plain"
    AddOutputFilterByType DEFLATE "text/vcard"
    AddOutputFilterByType DEFLATE "text/vnd.rim.location.xloc"
    AddOutputFilterByType DEFLATE "text/vtt"
    AddOutputFilterByType DEFLATE "text/x-component"
    AddOutputFilterByType DEFLATE "text/x-cross-domain-policy"
    AddOutputFilterByType DEFLATE "text/xml"
  </IfModule>
</Macro>

<Macro DisableHotLink $host >
  # Disable file hotlinking - jpg jpeg png gif pdf
  <IfModule mod_rewrite.c>
    RewriteEngine on
    RewriteCond %{HTTP_REFERER} !^$
    RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?$host [NC]
    RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?google.com [NC]
    RewriteRule \.(jpg|jpeg|png|gif|pdf)$ – [NC,F,L]
  </IfModule>
</macro>

<Macro VHost443 $host >
  <VirtualHost *:443>
    SSLEngine on
    SSLProtocol all -SSLv2
    SSLCipherSuite HIGH:MEDIUM:!aNULL:!MD5
    SSLCertificateFile /etc/letsencrypt/live/$host/cert.pem
    SSLCertificateKeyFile /etc/letsencrypt/live/$host/privkey.pem
    SSLCertificateChainFile /etc/letsencrypt/live/$host/fullchain.pem
</Macro>

<Macro VHost80 $host >
  <VirtualHost *:80>
</Macro>

Enable the configuration.
> sudo a2enconf virtual

Enable macros and ssl.
> sudo a2enmod macro
> sudo a2enmod ssl

Restart apache
> sudo service apache2 restart

Configuring Let’s Encrypt

Let’s Encrypt needs to be configured to auto renew certs. Lets create a daily cron job
> sudo nano -w /etc/cron.daily/letsencrypt

#!/usr/bin/bash
# letsencrypt auto renew
/usr/bin/certbot renew --no-self-upgrade >> /var/log/le-renew.log

Adding a Default Website

Now we will create a default website.  This site will be used when no other website can be found.

Setup a DNS record for the new domain. I won’t cover this here.

Add a user. This user will be associated with the new domain name. Type the following.
> sudo useradd -m -U -s /bin/bash -c “default website” defaultweb
> sudo passwd defaultweb

Add the apache user to the new user’s group.
> sudo usermod -a -G defaultweb www-data

Update directory permissions.
> sudo chmod g+rwx /home/defaultweb
> sudo chown -R defaultweb:defaultweb /home/defaultweb

Create the virtual host file.  For the default server we will use port 80. Past the text below into the file.  Type:
> sudo nano -w /etc/apache2/sites-available/00-default.conf

# Virtual host config file
#
# MACRO FORMAT
# virtHost [type] [user] [host]
#  type = VHost80 or VHost443
#  user = the username of the website
#  host = domain name or virtual host name
#
# Use the line below to configure a site on port 80
use virtHost VHost80 defaultweb myserver.mydomain.tld

# Uncomment the line below once lets encrypt is setup
# use virtHost VHost443 defaultweb myserver.mydomain.tld

Disable the old default site and enable our default site.
> sudo a2dissite 000-default
> sudo a2ensite 00-default

Reload apache config
> sudo service apache2 reload

Test out the new website.  You should get a page that says ‘Hello World’.

Now we will setup lets encrypt for the default website.  The website must be reachable from the internet.  So lets get the cert:
> sudo certbot certonly –webroot -w /home/defaultweb/website/ -d <YOUR_DOMAIN> –email <YOUR_EMAIL_ADDRESS> –agree-tos

Edit /etc/httpd/virtualHosts.d/00-default.conf
Uncomment the last line to enable ssl connections for the virtual host.

Reload apache.
> sudo service apache2 reload

Test it out.  Connect to your default host via https.

Setup Additional Virtual Hosts

Adding a new virtual host is like adding the default virtual host.  Lets go through the steps.

Be sure DNS is configured for the new virtual host.

Setup a new user. This user will be associated with the new domain name. Type the following. Change ‘NEWUSER’ to the username you want.
> sudo useradd -m -U -s /bin/bash -c “Virtual Website User” NEWUSER
> sudo passwd NEWUSER
> sudo usermod -a -G NEWUSER www-data
> sudo chmod g+rwx /home/NEWUSER
> sudo chown -R NEWUSER:NEWUSER /home/NEWUSER

Create the virtual host file.  For the virtual server we will use port 80. Past the text below into the file.  Replace ‘NEWUSER’ with your user name.  Replace NEWVHOST with your hostname.
> sudo nano -w /etc/apache2/sites-available/NEWUSER.conf

# Virtual host config file
#
# MACRO FORMAT
# virtHost [type] [user] [host]
#  type = VHost80 or VHost443
#  user = the username of the website
#  host = domain name or virtual host name
#
# Use the line below to configure a site on port 80
use virtHost VHost80 NEWUSER NEWVHOST

# Uncomment the line below once lets encrypt is setup
# use virtHost VHost443 NEWUSER NEWVHOST

Enable the new site and reload apache config
> sudo a2ensite NEWUSER
> sudo service apache2 reload

Now we will setup lets encrypt for the new website.  The website must be reachable from the internet.  Replace NEWUSER and NEWVHOST with the info you have.  So lets get the cert.
> sudo certbot certonly –webroot -w /home/NEWUSER/website/ -d NEWHOST -d www.NEWHOST –email YOUR_EMAIL_ADDRESS –agree-tos

Edit /etc/httpd/virtualHosts.d/NEWUSER.conf
Uncomment the last line to enable ssl connections for the virtual host.

Reload apache.
> sudo service apache2 reload

Test it out.  Connect to your new host via https.

Conclusion

That’s the complete setup.