Setup Letsencrypt SSL for domain on Virtualmin GPL server setup

setup_letsencrypt_domain.sh

# Warning: use this script at your own risk - work in progress. Tested on Ubuntu 14.04 server.
# Note: Now that the letsencrypt feature is in place in Virtualmin, this script is obsolete.
# Before running the script, be sure to have Letsencrypt installed in /opt/ as descripted in the guide below:
# https://www.virtualmin.com/node/38853

# Running Drupal on the site? Remember to adjust .htaccess as described in the link below:
# https://community.letsencrypt.org/t/drupals-defualt-htaccess-file-breaks-webroot-authentication/3014

# Other resources:
# https://joealdeguer.com/how-to-install-and-setup-letsencrypt-for-virtualmin/
# https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-14-04

# @todo: modify script to allow for sub-server setups and automate further...

# Run script as root
echo "Run this script as root!"
echo -n "Enter the username of the domain > "
read MYUSERNAMEFORDOMAIN

echo -n "Enter the base domain (eg. example.com) > "
read MYDOMAIN

mkdir -p /home/${MYUSERNAMEFORDOMAIN}/ssl_certificates/${MYDOMAIN}

# Get random number between 0 and 59 for the cron job - to prevent all requests firing at the same time
MIN=$(( ( RANDOM % 59 )  + 1 ))

echo "${MIN} 3 1 1,3,5,7,9,11 * cd /opt/letsencrypt/ && ./letsencrypt-auto certonly --email info@$MYDOMAIN \
--agree-tos --webroot --renew-by-default -w /home/$MYUSERNAMEFORDOMAIN/public_html/ -d www.$MYDOMAIN -d \
$MYDOMAIN --authenticator webroot && cp /etc/letsencrypt/live/www.$MYDOMAIN/cert.pem \
/home/$MYUSERNAMEFORDOMAIN/ssl_certificates/${MYDOMAIN}/cert.pem && cp -f \
/etc/letsencrypt/live/www.$MYDOMAIN/chain.pem /home/$MYUSERNAMEFORDOMAIN/ssl_certificates/${MYDOMAIN}/chain.pem && \
cp -f /etc/letsencrypt/live/www.$MYDOMAIN/fullchain.pem /home/$MYUSERNAMEFORDOMAIN/ssl_certificates/${MYDOMAIN}/fullchain.pem \
&& cp -f /etc/letsencrypt/live/www.$MYDOMAIN/privkey.pem /home/$MYUSERNAMEFORDOMAIN/ssl_certificates/${MYDOMAIN}/privkey.pem" > \
/usr/local/bin/letsencrypt_cronjob.txt

crontab -l -u root | cat - /usr/local/bin/letsencrypt_cronjob.txt | crontab -u root -

echo "If things went well, now is the time to go and run the cron job and enable SSL and install the certificate for the virtual server"