Letsencrypt (Certbot) Generate The Wildcard SSL Certificate

Now with the help of Certbot will generate wildcard certificate for our test domain erpnext.xyz

sudo certbot certonly --manual --preferred-challenges=dns --email nome@erpnext.xyz --server https://acme-v02.api.letsencrypt.org/directory --agree-tos -d *.erpnext.xyz

After executing the above command, the Certbot will share a text record to add to your DNS.

Please deploy a DNS TXT record under the name
_acme-challenge.erpnext.xyz with the following value:


Then you will receive:

Press Enter to Continue
Waiting for verification...
Cleaning up challenges

 - Congratulations! Your certificate and chain have been saved at:
   Your key file has been saved at:
  Your cert will expire on 2019-08-31. 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


How do up upgrade LetsEncrypt certbot to version 0.22 which supports wildcard certificates?

Check version number

certbot --version || /path/to/certbot-auto --version

If you have already installed Certbot, you should add a parameter to apt-get install to upgrade only a specific package

sudo apt-get update
sudo apt-get install --only-upgrade certbot