- 如何使用Let’s Encrypt为我们的域名颁发证书
Certbot is a free, open source software tool for automatically using Let’s Encrypt certificates on manually-administrated websites to enable HTTPS.
Certbot is made by the Electronic Frontier Foundation (EFF), a 501(c)3 nonprofit based in San Francisco, CA, that defends digital privacy, free speech, and innovation.
- Web服务器：Nginx 1.18.0
- 宿主服务器：Ubuntu 20.04
SSH into the server running your HTTP website as a user with sudo privileges.
You’ll need to install snapd and make sure you follow any instructions to enable classic snap support.
Follow these instructions on snapcraft’s site to install snapd.
If you’re running Ubuntu 16.04 LTS (Xenial Xerus) or later, including Ubuntu 18.04 LTS (Bionic Beaver), Ubuntu 18.10 (Cosmic Cuttlefish) and Ubuntu 19.10 (Eoan Ermine), you don’t need to do anything. Snap is already installed and ready to go.
Execute the following instructions on the command line on the machine to ensure that you have the latest version of snapd.
sudo snap install core; sudo snap refresh core
If you have any Certbot packages installed using an OS package manager like apt, dnf, or yum, you should remove them before installing the Certbot snap to ensure that when you run the command certbot the snap is used rather than the installation from your OS package manager.
sudo apt-get remove certbot, sudo dnf remove certbot
If you previously used Certbot through the certbot-auto script, you should also remove its installation by following the instructions here.
Run this command on the command line on the machine to install Certbot.
sudo snap install --classic certbot
Execute the following instruction on the command line on the machine to ensure that the
certbot command can be run.
sudo ln -s /snap/bin/certbot /usr/bin/certbot
Run this command to get a certificate and have Certbot edit your Nginx configuration automatically to serve it, turning on HTTPS access in a single step.
sudo certbot --nginx
If you’re feeling more conservative and would like to make the changes to your Nginx configuration by hand, run this command.
sudo certbot certonly --nginx
The Certbot packages on your system come with a cron job or systemd timer that will renew your certificates automatically before they expire. You will not need to run Certbot again, unless you change your configuration. You can test automatic renewal for your certificates by running this command:
sudo certbot renew --dry-run
The command to renew certbot is installed in one of the following locations:
My timers would be:
root@us:/var/log/nginx# systemctl list-timers
To confirm that your site is set up properly, visit https://yourwebsite.com/ in your browser and look for the lock icon in the URL bar.