まずはcertbotをインストールしAPIを叩く
sudo yum search --enablerepo=epel certbot
sudo certbot certonly --manual \
--server https://acme-v02.api.letsencrypt.org/directory \
--preferred-challenges dns \
-d *.upper-ricefield.net -d upper-ricefield.net \
-m ******@upper-ricefield.net \
--agree-tos
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
Requesting a certificate for *.upper-ricefield.net and upper-ricefield.net
Performing the following challenges:
dns-01 challenge for upper-ricefield.net
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Please deploy a DNS TXT record under the name
_acme-challenge.upper-ricefield.net with the following value:
FL-dArNldjaskljl*******
Before continuing, verify the record is deployed.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Press Enter to Continue
この状態でDNSへの登録を行う。確認は(別ターミナルで)
dig @8.8.8.8 -t TXT _acme-challenge.upper-ricefield.net
正常に登録できるまではEnterは押さない。以下のようになれば証明書が発行されている。
Waiting for verification...
Cleaning up challenges
Subscribe to the EFF mailing list (email: ***@upper-ricefield.net).
Starting new HTTPS connection (1): supporters.eff.org
IMPORTANT NOTES:
- Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/upper-ricefield.net/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/upper-ricefield.net/privkey.pem
Your certificate will expire on 2022-01-21. 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
ワイルドカード証明書の場合は renew できないようだ…。