Add ip subnets to nginx config from cloudflare website.

cloudflare.sh

#! /bin/bash
# The original source
# I don't know who made it.
# Update cloudflare.conf with new IPs
#

cloudFlareConf="/etc/nginx/conf.d/cloudflare.conf"
IPV4=$(curl -s "https://www.cloudflare.com/ips-v4")
IPV6=$(curl -s "https://www.cloudflare.com/ips-v6")
DATE="$(date)"

echo "# Last updated ${DATE}" > ${cloudFlareConf}

for IPV4ip in ${IPV4}
do
  echo "set_real_ip_from ${IPV4ip};" >> ${cloudFlareConf}
done

for IPV6ip in ${IPV6}
do
  echo "set_real_ip_from ${IPV6ip};" >> ${cloudFlareConf}
done

echo "real_ip_header CF-Connecting-IP;" >> ${cloudFlareConf}

cloudflare_gce.sh

#! /bin/bash
# Made by ryush00
# Update cloudflare.conf with new IPs
# It works with Google Cloud Network Load Balancer
# Subnet mask may not exact.

cloudFlareConf="/etc/nginx/conf.d/cloudflare.conf"
IPV4=$(curl -s "https://www.cloudflare.com/ips-v4")
IPV6=$(curl -s "https://www.cloudflare.com/ips-v6")
DATE="$(date)"

echo "# Last updated ${DATE}" > ${cloudFlareConf}

for IPV4ip in ${IPV4}
do
  echo "set_real_ip_from ${IPV4ip};" >> ${cloudFlareConf}
done

for IPV6ip in ${IPV6}
do
  echo "set_real_ip_from ${IPV6ip};" >> ${cloudFlareConf}
done
echo "set_real_ip_from 130.211.0.0/16;" >> ${cloudFlareConf}
echo "real_ip_header X-Forwarded-For;" >> ${cloudFlareConf}
echo "real_ip_recursive on;" >> ${cloudFlareConf}