Install Lets encrypt on Linux AMI

Run Following Commands :

curl -O https://dl.eff.org/certbot-auto
chmod +x certbot-auto
sudo mv certbot-auto /usr/local/bin/certbot-auto

Make sure apache is running on 443 port and it is opened.

Install mod ssl using following command

sudo yum install mod24_ssl

We have used this command because we have installed httpd using `sudo yum install -y httpd24 php56 php56-mysqlnd`

If you have installed httpd using `sudo yum install httpd`, install mod_ssl using
`sudo yum install mod_ssl`
 
Now install certificates using

certbot-auto -d domain.com --debug

https://coderwall.com/p/e7gzbq/https-with-certbot-for-nginx-on-amazon-linux