openssl req -x509 -nodes -days 36500 -newkey rsa:2048 -keyout /usr/local/ssl/nginx.key -out /usr/local/ssl/nginx.crt

# openssl req -x509 -nodes -days 36500 -newkey rsa:2048 -keyout /u  sr/local/ssl/nginx.key -out /usr/local/ssl/nginx.crt
Generating a 2048 bit RSA private key
...............................................................................+  ++
...............+++
writing new private key to '/usr/local/ssl/nginx.key'
-----
You are about to be asked to enter information that will be incorporated
into your certificate request.
What you are about to enter is what is called a Distinguished Name or a DN.
There are quite a few fields but you can leave some blank
For some fields there will be a default value,
If you enter '.', the field will be left blank.
-----
Country Name (2 letter code) [XX]:CN
State or Province Name (full name) []:beijing
Locality Name (eg, city) [Default City]:beijing
Organization Name (eg, company) [Default Company Ltd]:xxxx
Organizational Unit Name (eg, section) []:xxxx
Common Name (eg, your name or your server's hostname) []:xxxx（一般是域名）
Email Address []:xxxx@xxxx.com
# ll
total 8
-rw-r--r--. 1 root root 1391 Apr 21 13:29 nginx.crt
-rw-r--r--. 1 root root 1704 Apr 21 13:29 nginx.key

cd /app/download/nginx-1.12.2

./configure --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module

#可能需要的依赖包
yum -y install pcre-devel openssl openssl-devel

make

cp /usr/local/nginx/sbin/nginx /usr/local/nginx/sbin/nginx_bak

cp ./objs/nginx /usr/local/nginx/sbin/

/usr/local/nginx/sbin/nginx -V

nginx version: nginx/1.12.2
built by gcc 4.8.5 20150623 (Red Hat 4.8.5-16) (GCC)
built with OpenSSL 1.0.2k-fips 26 Jan 2017
TLS SNI support enabled
configure arguments: --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module

 server {

    listen	80;
		server_name www.yourdomain.com;
	  rewrite ^(.*) https://$server_name$1 permanent; #http 跳转 https
  }

server {
	listen 443 ssl;
	server_name www.yourdomain.com;
	ssl_certificate /usr/local/ssl/nginx.crt;
	ssl_certificate_key /usr/local/ssl/nginx.key;
	ssl_session_cache  shared:SSL:1m;
	ssl_session_timeout 5m;
	#禁止在header中出现服务器版本，防止黑客利用版本漏洞攻击
	server_tokens off;
	#如果是全站 HTTPS 并且不考虑 HTTP 的话，可以加入 HSTS 告诉你的浏览器本网站全站加密，并且强制用 HTTPS 访问
	fastcgi_param  HTTPS        on;
	fastcgi_param  HTTP_SCHEME     https;
	access_log /usr/local/nginx/logs/httpsaccess.log;
}

/usr/local/nginx/sbin/nginx -t

nginx: the configuration file /usr/local/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx/conf/nginx.conf test is successful

/usr/local/nginx/sbin/nginx -s reload