Creating an AMI

• Create a ubuntu linux server
• Execute the following commands

sudo apt update
sudo apt install apache2 -y
sudo apt install php libapache2-mod-php php-mysql -y
echo '<?php phpinfo(); ?>' | sudo tee /var/www/html/info.php
sudo systemctl restart apache2

• Now navigate to http://<publicip>
  
• Now navigate to http://<publicip>/info.php
  
• We would like to increase or decrease number of ec2 instances based on metrics
  
• For this exercise, lets assume that the metric will be cpu utilization.
• Now for our lab purposes, we will be installing a tool which increases the load on cpu which is called as stress
  
• Now lets create an AMI
  
  
  
  
  
• Now lets create an ec2 instane with the AMI lamp
  
  
  
• Now if we want this image to be availble in other regions as well
  
  
  
  
• AMI is backup of your EBS volume i.e. Snapshot + additional information (metadata)
  
• Pricing of AMI = Pricing of EBS Snapshots
  
  
  
• To remove the AMI, Use De-register AMI
  
  
• Exercise: Create an AMI for Jenkins which is installed.