lets-encrypt 配置HTTPS

安装网页 ：https://certbot.eff.org/lets-encrypt/centosrhel7-nginx

执行命令

```sudo certbot certonly -d "*.coinrua.com" -d coinrua.com --server https://acme-v02.api.letsencrypt.org/directory --manual --preferred-challenges dns```

执行过程中 ： 其中需要配置域名指向 TXT  2条记录

测试是否生效 dig _acme-challenge.xx.com txt

nginx 配置：

        listen 443 ssl;

        server_name  xx.com www.xx.com;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        ssl_certificate  /etc/letsencrypt/live/xx.com/fullchain.pem;

        ssl_certificate_key  /etc/letsencrypt/live/xx.com/privkey.pem;

http to https

server {

listen 80;                                                         

server_name  www.coinrua.com;                   

return 301 https://$server_name$request_uri;                   

}