1. Letsencrypt/certbot/manual_mode/dns-01/wildcard

dns認証に慣れたら、wildcard証明書も簡単だった。-- ToshinoriMaeno 2019-12-30 02:43:12

# certbot certonly --manual --preferred-challenges dns-01 -d \*.sakura.qmail.jp
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Plugins selected: Authenticator manual, Installer None
Starting new HTTPS connection (1): acme-v02.api.letsencrypt.org
Obtaining a new certificate
Performing the following challenges:
dns-01 challenge for sakura.qmail.jp

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NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you're running certbot in manual mode on a machine that is not
your server, please ensure you're okay with that.

Are you OK with your IP being logged?
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(Y)es/(N)o: y

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Please deploy a DNS TXT record under the name
_acme-challenge.sakura.qmail.jp with the following value:

OS-tgmu0AbnjksfRpQxRBCylSIbflcMmO9jhYjLSGbk

Before continuing, verify the record is deployed.
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Press Enter to Continue

TXTレコードを設定して、確認したら、Enterを入れる。

Waiting for verification...
Cleaning up challenges

IMPORTANT NOTES:
 - Congratulations! Your certificate and chain have been saved at:
   /usr/local/etc/letsencrypt/live/sakura.qmail.jp-0001/fullchain.pem
   Your key file has been saved at:
   /usr/local/etc/letsencrypt/live/sakura.qmail.jp-0001/privkey.pem
   Your cert will expire on 2020-03-28. 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