Using the old bash script for automatic renewal sometimes fail with this error (or similar one):
warning:certbot.renewal:attempting to renew cert from produce an unexpected error: the apache plugin is not working; noinstallerror()
This is probably result of two things:
- Let’s Encrypt enforce limits on request count and domain count
- The official letsencrypt client change to certbot and is ported to few distros
If you are using Debian 8 with apache this is now the recommended way to renew certs:
sudo apt-get install python-certbot-apache -t jessie-backports #crontab twice per day certbot renew --quiet
For other configuration check https://certbot.eff.org/