CentOS 7 安装 Letsencrypt 客户端 Certbot

安装(搞不清楚是否两个都需要)
yum install python2-certbot-nginx
yum install certbot

解决依赖包版本问题
ImportError: No module named 'requests.packages.urllib3'

pip uninstall requests
pip uninstall urllib3
yum remove python-urllib3
yum remove python-requests
yum install python-urllib3
yum install python-requests

yum install certbot

生成证书
certbot certonly --standalone -d acme.example.com

Nginx配置

    listen       443 ssl;
    server_name  acme.example.com;
    charset      utf-8;

    ssl on;
    ssl_certificate /etc/letsencrypt/live/acme.example.com/fullchain.pem;
    ssl_certificate_key /etc/letsencrypt/live/acme.example.com/privkey.pem;

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_dhparam /etc/ssl/certs/dhparam.pem;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;
    ssl_stapling on;
    ssl_stapling_verify on;
    add_header Strict-Transport-Security max-age=15768000;

生成DH-Key
nohup openssl dhparam -out dhparam.pem 4096 1>dhkey.log &