AWS Classroomnotes 13/Sep/2022

AWS EC2 contd…

Activity 3

• Create an ec2 instance with
  • ubuntu 20.04 AMI
  • imported key pair
  • 22 and 80 port open to all
  • instance type: t2.micro
• Install webserver => Apache with php

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

• Solution 1: Create ec2 instance with above options. SSH into EC2 and execute the commands
  • SSH and execute the following commands
    
  • Now navigate to http://<publicip>/info.php
    
• Solution 2: User Data
  • Open Advanced details while creating ec2 instance and navigate to the user data section
    
  • Now launch ec2 instance
  • Now navigate to http://<publicip>/info.php
    
  • Userdata is the script that will be executed as a root user by your aws instance.
  • This script gets execute only while creating the ec2 instance.
  • Lets verify the logs
    
• Refer Here for cloud-init.

AWS EC2 instance Lifecycle

• The billing part of the ec2 instance will be applicable only for on-demand instances.
• Refer the below image for instance states
  
• Refer Here for the offical docs on instance lifecycle.
• Actions that can be performed on ec2
  • launch => Create an ec2 instance
  • stop => stop the ec2 instance which is running
  • start => start the ec2 instance which is stopped
  • terminate => terminate the running or stopped ec2 instance
  • stop-hibernate => hibernate the ec2 instance which is running