Using SSL Certificate in CentOS 6 Apache Environment

condition:
VPS or Dedicated Server
CentOS 6 or later, with Apache installed. Memory: 512MB minimum

Installation steps:
1. Install Mod SSL
yum install mod_ssl

2. Create a directory to store certificates
mkdir /etc/httpd/ssl

3. Create a self-signed certificate
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout /etc/httpd/ssl/apache.key -out /etc/httpd/ssl/apache.crt

4. Create an SSL certificate
nano /etc/httpd/conf.d/ssl.conf
Find and replace it with ServerName example.com:443. Note that example.com is the domain name you want to encrypt.
The next 3 lines should be in the following format:
SSLEngine on
SSLCertificateFile /etc/httpd/ssl/apache.crt
SSLCertificateKeyFile /etc/httpd/ssl/apache.key

5. Restart Apache service
/etc/init.d/httpd restart

Now, you can visit, for example, https://zhujiwiki.com/

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