Skip to content

Instantly share code, notes, and snippets.

@erikaheidi
Last active February 23, 2022 02:13
Show Gist options
  • Save erikaheidi/4d579acf553297da0fa1 to your computer and use it in GitHub Desktop.
Save erikaheidi/4d579acf553297da0fa1 to your computer and use it in GitHub Desktop.
Auto renewal for Let's Encrypt Apache
#!/bin/bash
#================================================================
# Let's Encrypt renewal script for Apache on Ubuntu/Debian
# @author Erika Heidi<erika@do.co>
# Usage: ./le-renew.sh [base-domain-name]
# More info: http://do.co/1mbVihI
#================================================================
domain=$1
le_path='/opt/letsencrypt'
le_conf='/etc/letsencrypt'
exp_limit=30;
get_domain_list(){
certdomain=$1
config_file="$le_conf/renewal/$certdomain.conf"
if [ ! -f $config_file ] ; then
echo "[ERROR] The config file for the certificate $certdomain was not found."
exit 1;
fi
domains=$(grep --only-matching --perl-regex "(?<=domains \= ).*" "${config_file}")
last_char=$(echo "${domains}" | awk '{print substr($0,length,1)}')
if [ "${last_char}" = "," ]; then
domains=$(echo "${domains}" |awk '{print substr($0, 1, length-1)}')
fi
echo $domains;
}
if [ -z "$domain" ] ; then
echo "[ERROR] you must provide the domain name for the certificate renewal."
exit 1;
fi
cert_file="/etc/letsencrypt/live/$domain/fullchain.pem"
if [ ! -f $cert_file ]; then
echo "[ERROR] certificate file not found for domain $domain."
exit 1;
fi
exp=$(date -d "`openssl x509 -in $cert_file -text -noout|grep "Not After"|cut -c 25-`" +%s)
datenow=$(date -d "now" +%s)
days_exp=$(echo \( $exp - $datenow \) / 86400 |bc)
echo "Checking expiration date for $domain..."
if [ "$days_exp" -gt "$exp_limit" ] ; then
echo "The certificate is up to date, no need for renewal ($days_exp days left)."
exit 0;
else
echo "The certificate for $domain is about to expire soon. Starting renewal request..."
domain_list=$( get_domain_list $domain )
"$le_path"/letsencrypt-auto certonly --apache --renew-by-default --domains "${domain_list}"
echo "Restarting Apache..."
/usr/sbin/service apache2 reload
echo "Renewal process finished for domain $domain"
exit 0;
fi
@kbpontius
Copy link

I used this script for a while and found it wasn't working either. This article really helped me:
https://www.digitalocean.com/community/tutorials/how-to-secure-apache-with-let-s-encrypt-on-ubuntu-14-04

It covers starting out through settings up auto-renew, but it definitely covered all the bases for me.

@sjaanus
Copy link

sjaanus commented May 5, 2017

How does this compare to certbot for renewal? Is this script created before certbot was around? Which is the best practice today?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment