Pull cloudflare ips for nginx

cloudflare_ips_nginx.sh

# cat /etc/nginx/conf.d/cloudflare.conf
# sh cloudflare_ips_nginx.sh > /etc/nginx/conf.d/cloudflare.conf && service nginx configtest && service nginx reload

echo "# Cloudflare"
for ip in $(curl -s https://www.cloudflare.com/ips-v4); do
        echo "set_real_ip_from   $ip;"
done
for ip in $(curl -s https://www.cloudflare.com/ips-v6); do
        echo "set_real_ip_from   $ip;"
done
echo "real_ip_header     CF-Connecting-IP;"