make a script with:
popd /opt/letsencrypt && /letsencrypt-auto certonly --email [email protected] --agree-tos --renew-by-default --webroot -w /var/www/
-d forums.planetice.net
Replace `--webroot -w /var/www/` with apache/nginx/standalone if you have your stuff using that instead.
Set cron to 10 minutes and redirect to log. watch it run twice then change it to once a month if it worked twice in a row. Forget about it cause you're gold.