下载certbot
# 下载certbot-auto
wget -c https://dl.eff.org/certbot-auto -P /usr/local/bin
# 设置可执行权限
chmod +x /usr/local/bin/certbot-auto
# 查看版本，第一次运行certbot-auto会安装依赖
certbot-auto --version
申请证书
certbot-auto certonly -d *.example.com --manual --preferred-challenges dns --server https://acme-v02.api.letsencrypt.org/directory
- certonly 安装模式
- -d 申请证书的域名，如果是通配符域名输入 *.example.com
- --manual 手动安装插件
- --preferred-challenges dns 使用 DNS 方式校验域名所有权
- --server，Let's Encrypt ACME v2 版本使用的服务器不同于 v1 版本，需要显示指定
# 输入电子邮箱，用于续费和安全通知
Enter email address (used for urgent renewal and security notices)
(Enter 'c' to cancel): xxx@163.com
# 服务条款，A：同意，C：取消
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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 at
https://acme-v02.api.letsencrypt.org/directory
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(A)gree/(C)ancel: A
# 是否订阅相关的邮件
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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.
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(Y)es/(N)o: N
# IP绑定
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NOTE: The IP of this machine will be publicly logged as having requested this
certificate. If you're running certbot in manual mode on a machine that is not
your server, please ensure you're okay with that.
Are you OK with your IP being logged?
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(Y)es/(N)o: Y
配置DNS TXT记录
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Please deploy a DNS TXT record under the name
_acme-challenge.example.com with the following value:
pzBqECpVNkjt8gx76qVAYevMFg6n_8dfq-Xqr2f9dI8
Before continuing, verify the record is deployed.
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Press Enter to Continue
- 到购买域名的服务商控制台解析域名
- 添加一条TXT记录
- 主机记录：_acme-challenge.example.com
- 记录值：pzBqECpVNkjt8gx76qVAYevMFg6n_8dfq-Xqr2f9dI8
- 记录生效后，回车
Waiting for verification...
Cleaning up challenges
IMPORTANT NOTES:
- Congratulations! Your certificate and chain have been saved at:
/etc/letsencrypt/live/example.com/fullchain.pem
Your key file has been saved at:
/etc/letsencrypt/live/example.com/privkey.pem
Your cert will expire on 2020-12-21. To obtain a new or tweaked
version of this certificate in the future, simply run certbot-auto
again. To non-interactively renew *all* of your certificates, run
"certbot-auto renew"
- Your account credentials have been saved in your Certbot
configuration directory at /etc/letsencrypt. You should make a
secure backup of this folder now. This configuration directory will
also contain certificates and private keys obtained by Certbot so
making regular backups of this folder is ideal.
- 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
证书目录：/etc/letsencrypt/live/example.com
ls /etc/letsencrypt/live/example.com
cert.pem chain.pem fullchain.pem privkey.pem README
自动续订
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创建续订证书脚本
touch /usr/local/bin/sslrenew.sh -
编辑脚本内容
在sslrenew.sh文件中添加以下内容certbot-auto renew
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设置脚本可执行
chmod +x /usr/local/bin/sslrenew.sh -
编辑定时任务,每月1号执行续订操作
crontab -e添加定时逻辑
0 0 1 * * /usr/local/bin/sslrenew.sh
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重新加载定时任务
service crond reload -
查看定时任务列表
crontab -l
配置nginx
server {
listen 443 ssl;
server_name localhost;
location / {
root html;
index index.html index.htm;
}
ssl on;
ssl_session_timeout 5m;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_ciphers ALL:!ADH:!EXPORT56:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv2:+EXP;
ssl_prefer_server_ciphers on;
ssl_certificate /etc/letsencrypt/live/example.com/cert.pem;
ssl_certificate_key /etc/letsencrypt/live/example.com/privkey.pem;
}
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