☁️ Cloudflare DDNS IP Updater - Docker

Lightweight Docker Container that dynamically updates the IP via Cloudflare API. Access your home network remotely via a custom domain name without a static IP!

About

This is a fork of K0p1-Git/cloudflare-ddns-updater script added with docker support and some notification services.

• lightweight docker image based on alpine
• written in pure BASH
• scheduled with crond
• notifications

Pull image from Docker Hub: emmello/cloudflare-ddns

Configuration

Example docker-compose.yml

services:
  ddns:
    image: emmello/cloudflare-ddns
    restart: always
    container_name: ddns
    environment:
      - CRON_JOB=* * * * *
      - [email protected]
      - AUTH_METHOD=global
      - AUTH_KEY=abcdefgh12345
      - ZONE_IDENTIFIER=123456abcdefgh
      - RECORD_NAME=example.com
      - RECORD_TYPE=A
      - TTL=3600
      - PROXY=true
      - SITENAME=example.com
      - NOTIFICATION_LEVEL=on_success_or_error
      - NTFYURI=https://ntfy.example.com/ddns

Environment variables

Required

Name	Description
AUTH_EMAIL	(required) Mail used to register with Cloudflare
AUTH_METHOD	(required) global for Global API Key or token for Scoped API Token
ZONE_IDENTIFIER	(required) Can be found in the "Overview" tab of your domain
RECORD_NAME	(required) Which record you want to be synced
TTL	(required) DNS TTL in seconds
PROXY	(required) proxy through cloudflare network true or false
CRON_JOB	(required) Array of IPs that cant access the command

Notifications

Name	Description
SITENAME	Used for notifications as identifier
NOTIFICATION_LEVEL	on_error to get notified only on error; on_success_or_error to get notified on success or error; always to get notified oon every try even if ip has not changed

Slack

Name	Description
SLACKURI	Slack Uri
SLACKCHANNEL	Slackchannel

Discord Webhook

Name	Description
DISCORDURI	Discord WebHook uri

Ntfy

Name	Description
NTFYURI	Ntfy uri and topic

Telegram

Name	Description
TELEGRAM_TOKEN	Telegram bot token
TELEGRAM_CHAT_ID	Telegram chat id

How to use cron

Cron is used to schedule the script execution. You can use crontab.guru as helper to get the cron job working.

# ┌───────────── minute (0 - 59)
# │ ┌───────────── hour (0 - 23)
# │ │ ┌───────────── day of the month (1 - 31)
# │ │ │ ┌───────────── month (1 - 12)
# │ │ │ │ ┌───────────── day of the week (0 - 6) (Sunday to Saturday 7 is also Sunday on some systems)
# │ │ │ │ │                               
# │ │ │ │ │ 
# │ │ │ │ │ 
# * * * * *