Certbot is a fully-featured client for the Let’s Encrypt CA that can automate the tasks of obtaining certificates and configuring webservers to use them.
I would like to introduce certbot for obtaining certiciates and renew the certiciates.
In this article, I use the following linux env:
- OS: CentOS/RHEL 7
- Server: Nginx
If your env is different, please see official guide.
You should first enable EPEL repository and install Certbot
sudo yum -y install yum-utils
Running a folloing command will get a certificate and have Certbot edit your Nginx configuration automatically to serve it.
sudo certbot --nginx
You can set up a cron or systemd job for renewaling certificate
30 3 * * * /usr/bin/certbot renew --quiet --webroot && /bin/systemctl reload nginx
If you are running Rails application, you should specify a root folder of the Rails app:
30 3 * * * /usr/bin/certbot renew --quiet --webroot --webroot-path /RAILS/PATH/TO && /bin/systemctl reload nginx
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