# certbot 自动签发Let's Encrypt https免费证书,python实现 ## Usage apt源安装 ``` apt install snapd snap install --classic certbot ln -s /snap/bin/certbot /usr/bin/certbot ``` 二级泛域名: ``` certbot certonly --manual \ -d '*.b.exampple.com','example.com' \ --agree-tos \ --email domain@example.com \ --server https://acme-v02.api.letsencrypt.org/directory ``` 三级泛域名: ``` certbot certonly --manual \ -d '*.b.exampple.com' \ --agree-tos \ --email domain@example.com \ --server https://acme-v02.api.letsencrypt.org/directory ``` nginx 检出域名签名: ``` certbot certonly --nginx ``` 自动更新证书 ``` 0 3 15 */1 * /usr/bin/certbot renew --dry-run ```