AWS EC2 Instance (advance section script) with webserver and availability zone info

The use of this script requires basic knowledge of AWS and shell scripting. This is the script I normally use when I want to test something in my personal account and let the instance be powered off after 2 hours.

This script will bring up EC2 instance with following :

* updated packages,
* HTTPD service installed and started,
* Also run a job at startup to Poweroff instance after 2 hours (refer 7200)

(Note: Poweroff is kept only for those who need instance only for practicing and/or limited time and to save costs. In case of production use, comment out poweroff statement)

#!/bin/bash
yum update -y
yum install httpd24 -y
service httpd start
chkconfig httpd on
echo "Hello, this is a test instance from `curl http://169.254.169.254/latest/meta-data/placement/availability-zone`" > /var/www/html/index.html

echo "# This will bring up instance only for below mentioned seconds" >> /etc/rc.local
echo "(sleep 7200; poweroff) &" >> /etc/rc.local