My letsencrypt certificate will expire soon. I ran "certbot" to renew it for the next 3 months:
$ sudo certbot certonly --standalone -d $website --email admin@$website
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator standalone, Installer None
Cert is due for renewal, auto-renewing...
Renewing an existing certificate
Performing the following challenges:
tls-sni-01 challenge for my_website123.com
Waiting for verification...
Cleaning up challenges
IMPORTANT NOTES:
- Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/my_website123.com/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/my_website123.com/privkey.pem
Your cert will expire on 2018-07-08. To obtain a new or tweaked
version of this certificate in the future, simply run certbot
again. To non-interactively renew *all* of your certificates, run
"certbot renew"
- If you like Certbot, please consider supporting our work by:
Donating to ISRG / Let's Encrypt: https://letsencrypt.org/donate
Donating to EFF: https://eff.org/donate-le
Why "2018-07-08"? I even ran certbot again - the result was the same.