PATH=/sbin:/usr/sbin:/bin:/usr/bin

# Replace letsencrypt with certbot / certbot-auto or the full path to letsencrypt command
# Replace nginx test and reload with relevant HTTP server
# Try renewing certs once a week
0 0 * * 0 root letsencrypt renew && nginx -t && service nginx reload

# certbot-auto with apache2
#0 0 * * 0 root certbot-auto renew && apache2ctl configtest && service apache2 reload