Let’s Encryptで証明書取得
①mod_sslを有効にする
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# a2enmod ssl |
②Gitをインストール
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# apt-get install -y git |
③証明書取得ツールのインストール
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# cd /usr/local/ # git clone https://github.com/certbot/certbot |
/usr/local/certbot以下に「Certbot」がインストールされました
④証明書のインストール
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# certbot certonly --webroot -w /var/www/html/<ドキュメントルート> -d <FQDN> |
# 初回のみメールアドレスの登録と利用条件への同意が必要
# 受信可能なメールアドレスを指定
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Saving debug log to /var/log/letsencrypt/letsencrypt.log Enter email address (used for urgent renewal and security notices) (Enter 'c' to cancel): <mail address> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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. Do you agree? - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - (Y)es/(N)o: y - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Would you be willing, once your first certificate is successfully issued, 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 Account registered. Requesting a certificate for <FQDN> Successfully received certificate. Certificate is saved at: /etc/letsencrypt/live/<FQDN>/fullchain.pem Key is saved at: /etc/letsencrypt/live/<FQDN>/privkey.pem This certificate expires on 2022-09-22. These files will be updated when the certificate renews. Certbot has set up a scheduled task to automatically renew this certificate in the background. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 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 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - |
「Successfully received certificate.」と表示されれば成功
# メッセージ中に記載の通り [/etc/letsencrypt/live/<FQDN>/] 配下に次の証明書が取得されている
# cert.pem ⇒ SSLサーバー証明書(公開鍵含む)
# chain.pem ⇒ 中間証明書
# fullchain.pem ⇒ cert.pem と chain.pem が結合されたファイル
# privkey.pem ⇒ 公開鍵に対する秘密鍵