March 28

Certbot SSL Certification Auto Renew Cron Job

Let's encrypt SSL certificates will get expired after 90 Days of installation and you must renew it before it get expired.

Certbot Renew Command

$ sudo certbot renew --dry-run

Certbot Auto Renew Cron Job

$ cat /etc/cron.d/certbot


# /etc/cron.d/certbot: crontab entries for the certbot package
# Upstream recommends attempting renewal twice a day
# Eventually, this will be an opportunity to validate certificates
# haven't been revoked, etc. Renewal will only occur if expiration
# is within 30 days.

0 */12 * * * root test -x /usr/bin/certbot -a ! -d /run/systemd/system && perl -e 'sleep int(rand(43200))' && certbot -q renew
How Certbot's Auto Renew Script Works ?

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