Certbot certonly20251028

フリーのLets's encrypt証明書を再発行してもらい、古くなった証明書を更新します ９０日間の期間限定なので定期的に更新必要です（普通はcronで定期的に自動更新設定しているはず）

今回は下記ドメインのみを更新します hoge.net

指定するドキュメントルートは /var/www/grav

コマンド

~$ sudo certbot certonly -w /var/www/grav -d [hoge.net](http://hoge.net/)

Saving debug log to /var/log/letsencrypt/letsencrypt.log How would you like to authenticate with the ACME CA?

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1: Apache Web Server plugin (apache) 2: Spin up a temporary webserver (standalone) 3: Place files in webroot directory (webroot)

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Select the appropriate number [1-3] then [enter] (press 'c' to cancel): 3　　＜ー私の場合は３ Renewing an existing certificate for [hoge.net](http://hoge.net/)

Successfully received certificate. Certificate is saved at: /etc/letsencrypt/live/hoge.net/fullchain.pem Key is saved at: /etc/letsencrypt/live/hoge.net/privkey.pem This certificate expires on 2026-01-24. These files will be updated when the certificate renews. Certbot has set up a scheduled task to automatically renew this certificate in the background.

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- Donating to ISRG / Let's Encrypt: https://letsencrypt.org/donate - Donating to EFF: https://eff.org/donate-le

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念の為、apache2再起動

~$ sudo systemctl restart apache2 ~$ ls -l /var/www/grav ---