申請 Let's Encrypt 免費 SSL 憑證(Ubuntu + Cloudflare)

• Ubuntu 18.04.5 LTS

• 下載 Let's Encrypt certbot 工具

  sudo apt install certbot python3-certbot-dns-cloudflare

• 建立 /root/lets-encrypt/cloudflare.ini

  sudo mkdir -p /root/lets-encrypt/
  sudo vi /root/lets-encrypt/cloudflare.ini

  使用 Cloudflare 提供的資訊 Exp.

  # Cloudflare API credentials used by Certbot
  dns_cloudflare_email = [email protected]
  dns_cloudflare_api_key = 0123456789abcdef0123456789abcdef01234567

  sudo chmod 600 /root/lets-encrypt/cloudflare.ini

• 執行 certbot 工具申請憑證 Exp. harbor.ichiayi.com

  sudo certbot certonly \
    --dns-cloudflare \
    --dns-cloudflare-credentials /root/lets-encrypt/cloudflare.ini \
    --dns-cloudflare-propagation-seconds 10 \
    -d harbor.ichiayi.com

  第一次執行會出現輸入 e-mail 與需要同意的一些服務訊息
  執行範例畫面<xtermrtf>

sudo certbot certonly –dns-cloudflare –dns-cloudflare-credentials /root/lets-encrypt/cloudflare.ini –dns-cloudflare-propagation-seconds 10 -d harbor.ichiayi.com Saving debug log to /var/log/letsencrypt/letsencrypt.log Plugins selected: Authenticator dns-cloudflare, Installer None Enter email address (used for urgent renewal and security notices) (Enter 'c' to cancel): [email protected]

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Please read the Terms of Service at https://letsencrypt.org/documents/LE-SA-v1.2-November-15-2017.pdf. You must agree in order to register with the ACME server at https://acme-v02.api.letsencrypt.org/directory - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - (A)gree/(C)ancel: A

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Would you be willing to share your email address with the Electronic Frontier Foundation, a founding partner of the Let's Encrypt project and the non-profit organization that develops Certbot? We'd like to send you email about our work encrypting the web, EFF news, campaigns, and ways to support digital freedom. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - (Y)es/(N)o: Y Obtaining a new certificate Performing the following challenges: dns-01 challenge for harbor.ichiayi.com Waiting 10 seconds for DNS changes to propagate Waiting for verification… Cleaning up challenges

IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at:

 /etc/letsencrypt/live/harbor.ichiayi.com/fullchain.pem
 Your key file has been saved at:
 /etc/letsencrypt/live/harbor.ichiayi.com/privkey.pem
 Your cert will expire on 2021-01-27. 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"

- Your account credentials have been saved in your Certbot

 configuration directory at /etc/letsencrypt. You should make a
 secure backup of this folder now. This configuration directory will
 also contain certificates and private keys obtained by Certbot so
 making regular backups of this folder is ideal.

- 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

- We were unable to subscribe you the EFF mailing list because your

 e-mail address appears to be invalid. You can try again later by
 visiting https://act.eff.org.

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• 申請設定 Let's Encrypt 免費 SSL 憑證(CentOS + Apache/Nginx)