I just installed certbot on a new DigitalOcean droplet. How can I check whether autorenewal has been set to run? As far as I can tell no entires were added to crontab.
You should also check with
systemctl list-timers because newer versions of Certbot are likely to use systemd timers instead of cron jobs.
We also have a bit written about automated renewal here.
It does depend on your installation method, but you can follow those instructions to set up a cronjob, if you are still not sure.
I presume this means that it’s enabled:
NEXT LEFT LAST PASSED UNIT ACTIVATES
Thu 2021-07-22 19:40:00 UTC 15h left Thu 2021-07-22 00:49:30 UTC 3h 19min ago snap.certbot.renew.timer snap.certbot.renew.service