Nginx http和https 共存

　　　　nginx https 配置，添加证书启动https

server {

    listen  default_server;
    listen ;
    server_name  _;
    ssl on;
    ssl_certificate conf.d/server.crt;
    ssl_certificate_key conf.d/server.key;
    root         /usr/share/nginx/html;

}

nginx 配置https，配置证书以后，https可以正常访问，但是访问http时提示"The plain HTTP request was sent to HTTPS port"，由于请求转发到了https导致

解决办法：

　　去掉ssl on，在listen 443后面增加ssl,重新启动，此时http和https都可以访问到对应资源

server {

    listen  default_server;
    listen  ssl;
    server_name  _;
    ssl on;
    ssl_certificate conf.d/server.crt;
    ssl_certificate_key conf.d/server.key;
    root         /usr/share/nginx/html;

}