Load Balancer

Step 1 — Installing Apache

date
sudo dpkg-reconfigure tzdata

sudo apt update

sudo apt install apache2

Step 2 — Adjusting the Firewall

sudo ufw app list

sudo ufw allow 'Apache'

Step 3 — Checking your Web Server

sudo systemctl status apache2

Step 4 — Setting Up Virtual Hosts

sudo a2enmod proxy*

sudo a2enmod rewrite

sudo service apache2 restart

sudo apt-get update -y

sudo apt-get install build-essential unzip curl wget rsync apache2 redis-server -y

sudo a2enmod proxy

sudo a2enmod proxy_ajp

sudo a2enmod proxy_http

sudo a2enmod rewrite

sudo a2enmod deflate

sudo a2enmod headers

sudo a2enmod proxy_balancer

sudo a2enmod proxy_connect

sudo a2enmod proxy_html

sudo a2enmod lbmethod_*

sudo a2enmod ssl

sudo a2enmod reqtimeout

sudo service apache2 restar

sudo add-apt-repository ppa:certbot/certbot

root:/etc/apache2/proxy_template.conf

RequestReadTimeout header=20-40,MinRate=500 body=20,MinRate=500
# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
SetEnv force-proxy-request-1.0 1
SetEnv proxy-nokeepalive 1
ProxyTimeout 600

SSLProxyEngine on
SSLProxyVerify none
SSLProxyCheckPeerCN off
SSLProxyCheckPeerName off
SSLProxyCheckPeerExpire off

<Proxy balancer://devcluster>
BalancerMember https://<internal_ip>:8443
Order allow,deny
Allow from all
ProxySet lbmethod=byrequests
</Proxy>

ProxyPass / balancer://devcluster/
ProxyPassReverse / balancer://devcluster/

root:/etc/apache2/site-enabled/host_name.org.conf

##### Host entry for 'host_name'
<VirtualHost *:80>
ProxyRequests off
ProxyPreserveHost On
ServerName host_name.org
RewriteEngine on
RewriteCond %{REQUEST_URI} ^/$
RewriteRule (.*) /egi/ [R=301]
Include /etc/apache2/proxy_template.conf
</VirtualHost>

root:/etc/apache2/sites-enabled# sudo certbot --apache -d host_name.org