环境基础 centos7 + nginx,通过 yum 安装 letsencrypt
sudo yum install letsencrypt
生成 ssl 证书文件
sudo letsencrypt certonly --standalone --email yourself@email.com -d yourself.cn
这里注意--standalone
参数, 需要停止 nginx 服务,让出 80 端口
出现如下提示表示证书顺利生成
- IMPORTANT NOTES: - Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/yourself.cn/fullchain.pem Your key file has been saved at: /etc/letsencrypt/live/yourself.cn/privkey.pem Your cert will expire on 2019-01-01. To obtain a new or tweaked version of this certificate in the future, simply run certbot again. To non-interactively renew *all* of your certificates, run"certbot 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
这两句是关键后面配置 nginx 需要用到 \
/etc/letsencrypt/live/yourself.cn/fullchain.pem \
/etc/letsencrypt/live/yourself.cn/privkey.pem
配置 nginx 监听 443 端口
server { listen 443 ssl; server_name yourself.cn; ssl on; ssl_certificate /etc/letsencrypt/live/yourself.cn/fullchain.pem; ssl_certificate_key /etc/letsencrypt/live/yourself.cn/privkey.pem; ssl_session_cache shared:SSL:1m; ssl_session_timeout 5m; ssl_ciphers HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; location / { root /var/www; index index.html index.htm index.php; } location ~ \.php$ { root /var/www; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; include fastcgi_params; } }
把 http 访问重定向到 https
server { listen 80; server_name yourself.cn; return 301 https://yourself.cn$request_uri; }
证书有效期只有 90 天,通过定时任务设置自动更新,这里推荐一个 crontab 验证工具
sudo touch filename.sh # 创建执行脚本文件 写入以下命令sudo systemctl stop nginx && certbot renew && systemctl start nginx crontab -e # 编辑定时任务0 0 1 */2 * /path/filename.sh # 两个月更新一次
验证操作
crontab -l # 查看定时任务sudo certbot renew --dry-run # 该命令可以模拟更新证书 (记得先关掉 nginx )sudo openssl x509 -noout -dates -in /etc/letsencrypt/live/yourself.cn/cert.pem # 查看证书有效期
重启 nignx 打开
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