1.
bash < (curl -s https://raw.githubusercontent.com/cloudflare/mod_cloudflare/master/EasyApache/installer.sh)

2.
yum install -y ea-apache24-devel.x86_64 ea-apache24-debuginfo.x86_64

3.
wget https://www.cloudflare.com/static/misc/mod_cloudflare/mod_cloudflare.c

4.
apxs -a -i -c mod_cloudflare.c

5.
service httpd restart

Apache:
a2enmod ssl

apachectl configtest

Nginx:
listen server_ip:443;
ssl on;
ssl_certificate "/etc/nginx/ssl/site_name.crtca";
ssl_certificate_key "/etc/nginx/ssl/site_name.key";
ssl_ciphers EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH;
ssl_prefer_server_ciphers on;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;

rm -f /var/lib/rpm/__*
rpm --rebuilddb -v -v
yum clean all