1.检查nginx下是否有--with-http_stub_status_module 和--with-http_ssl_module两个模块，安装之后再重新编译

     nginx -V

2.用http克隆github上的certbot

    git clone https://github.com/certbot/certbot /opt/certbot-master

3.安装所有依赖

    /opt/certbot-master/letsencrypt-auto --help

4.关闭nginx，检出80端口，443端口是否有开启

    nginx -s stop

    firewall-cmd --query-port=80/tcp

    firewall-cmd --query-port=443/tcp

没有的话就开启

    firewall-cmd --permanent --zone=public --add-port=80/tcp

5.获取证书

    /opt/certbot-master/letsencrypt-auto --nginx -d www.pinnuli.com 

6.配置nginx（也可选择自动配置)

    
user nginx;
worker_processes auto;
error_log /var/log/nginx/error.log;
pid /run/nginx.pid;

include /usr/share/nginx/modules/*.conf;

events {
    worker_connections 1024;
}

http {
    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" 
                '$status $body_bytes_sent "$http_referer" '
                '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;

    sendfile            on;
    tcp_nopush          on;
    tcp_nodelay         on;
    keepalive_timeout   65;
    types_hash_max_size 2048;

    include             /etc/nginx/mime.types;
    default_type        application/octet-stream;

    include /etc/nginx/conf.d/*.conf;

    server {
        listen       80 default_server;
        listen       [::]:80 default_server;
        server_name  _;
        root        /var/www/pinnuli.github.io;

        include /etc/nginx/default.d/*.conf;

        location / {
        }

        error_page 404 /404.html;
        location = /40x.html {
        }

        error_page 500 502 503 504 /50x.html;
        location = /50x.html {
        }
    }
    server {
            server_name www.pinnuli.com; # managed by Certbot
            root        /var/www/pinnuli.github.io;
            include /etc/nginx/default.d/*.conf;
            location / {
            }
            error_page 404 /404.html;
            location = /40x.html {
            }
            error_page 500 502 503 504 /50x.html;
            location = /50x.html {
            }
            listen [::]:443 ssl ipv6only=on; # managed by Certbot
            listen 443 ssl; # managed by Certbot
            ssl_certificate /etc/letsencrypt/live/www.pinnuli.com/fullchain.pem; # managed by Certbot
            ssl_certificate_key /etc/letsencrypt/live/www.pinnuli.com/privkey.pem; # managed by Certbot
            include /etc/letsencrypt/options-ssl-nginx.conf; # managed by Certbot
            ssl_dhparam /etc/letsencrypt/ssl-dhparams.pem; # managed by Certbot
    }
}

7.设置自动更新

未完待续。。。