Understanding Load Balancers

• Activity:
  • Create the following vpc with two ubuntu ec2 instances
    
  • ensure 80 port is open to all, icmp is open, 22 port
  • Login into ec2 instance and install lamp stack
  • Execute the following steps
    “`bash

  ubuntu

  sudo apt update
  sudo apt install apache2 -y
  sudo apt install php libapache2-mod-php php-mysql -y

  create a file at /var/www/html/info.php with content

  <?php
  phpinfo();
  ?>
  ``
* Now accesshttp:///info.php`
  * Steps:
  
  
  
  * Now install the lamp following the above mentioned steps
  
  
  
  

• Now lets understand OSI Model for networking
  
• understand layer 4 and layer 7 LB
  
• Layer 4 LB
  
  
  
  
  
  
  
  
  
  
  
  
  
  
• Now lets Navigate using http://<lb-dns>/info.php
  
• When we try to access enterprize applications our urls will definetly not be http://ntierqt4-19ba2b1e1b642aa7.elb.ap-south-1.amazonaws.com/info.php rather they would be http://<domainname>/info.php
• Lets create a DNS record for the already purchased domain awsbykhaja.online, so we would be using Route 53
  
  
  
  
  
  
• Note: Ensure Aws CLI is installed on your system Refer Here