High availability for EC2 instances (AWS)

by Thomas Bründl

This article has not been completed yet. However, it may already contain helpful information and therefore it has been published at this stage.

https://it-infrastructure.solutions/spinning-up-your-first-ec2-instance-aws/

Add the following "User data" commands ....

#!/bin/bash
yum install httpd -y
rm /var/www/html/index.html
touch /var/www/html/index.html
echo "<!DOCTYPE html>" > /var/www/html/index.html
echo "<html>" >> /var/www/html/index.html
echo "<title>" >> /var/www/html/index.html
echo "Page 1" >> /var/www/html/index.html
echo "</title>" >> /var/www/html/index.html
echo "Hello World!" >> /var/www/html/index.html
echo "</html>" >> /var/www/html/index.html
service httpd start
#!/bin/bash
yum install httpd -y
rm /var/www/html/index.html
touch /var/www/html/index.html
echo "<!DOCTYPE html>" > /var/www/html/index.html
echo "<html>" >> /var/www/html/index.html
echo "<title>" >> /var/www/html/index.html
echo "Page 2" >> /var/www/html/index.html
echo "</title>" >> /var/www/html/index.html
echo "Hello World!" >> /var/www/html/index.html
echo "</html>" >> /var/www/html/index.html
service httpd start
#!/bin/bash
yum install httpd -y
rm /var/www/html/index.html
touch /var/www/html/index.html
echo "<!DOCTYPE html>" > /var/www/html/index.html
echo "<html>" >> /var/www/html/index.html
echo "<title>" >> /var/www/html/index.html
echo "Page 3" >> /var/www/html/index.html
echo "</title>" >> /var/www/html/index.html
echo "Hello World!" >> /var/www/html/index.html
echo "</html>" >> /var/www/html/index.html
service httpd start

Result:

Refresh the page to see the result from the beginning...