Apache版本2.4
安装mod_ssl
yum install mod_ssl
建立文件夹，存放sslkey
mkdir /etc/httpd/ssl/
建立凭证档
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/httpd/ssl/apache.key -out /etc/httpd/ssl/apache.crt
...........................................................+++
..............+++
writing new private key to '/etc/httpd/ssl/apache.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]:CHN
string is too long, it needs to be less than 2 bytes long
Country Name (2 letter code) [XX]:CN
State or Province Name (full name) []:HB
Locality Name (eg, city) [Default City]:WH
Organization Name (eg, company) [Default Company Ltd]:ZZ
Organizational Unit Name (eg, section) []:ZZ
Common Name (eg, your name or your server's hostname) []:WWW^H^[[3~^[[3~^[[3~^[[3~^[[3~^[[3~
Email Address []:webmaster@xxx.com需要填写一些内容，我随便填的…
apache配置
/etc/httpd/conf.d/ssl.conf
我把这下面的内容复制到另外一个文件中配置的
<VirtualHost _default_:443>
*****
</VirtualHost>需要修改的几项
DocumentRoot "/var/www/example.com/public_html"
ServerName www.example.com:443
SSLCertificateFile /etc/httpd/ssl/apache.crt
SSLCertificateKeyFile /etc/httpd/ssl/apache.key重启apache
systemctl restart httpd.service
通过以上步骤就能打开网页的https链接了，但是此时的https浏览器会提示不安全的链接，那么就需要到阿里云去申请一个CA证书，目前有免费版的CA证书，下面的链接是我发在百度的申请证书的教程，大家可以参考一下
https://jingyan.baidu.com/album/4b07be3c92836148b380f318.html
上一个效果图
https变成绿色，说明证书生效！