DDNS Cloudflare PowerShell Script¶
When building complex infrastructure and managing multiple servers and services using ip addresses is can create a lot of issues and is not always easy to manage. The preferred way is to use a DNS provider that allows you to manage your domain names and their associated IP addresses. DDNS Cloudflare PowerShell script is a simple PowerShell script that allows you to easily update your Cloudflare's DNS records dinamically regardless of your current IP address.
DDNS Cloudflare PowerShell Script can be used on Windows operating systems without any requirements for PowerShell.
Source code can be found at DDNS Cloudflare PowerShell Github Repository.
- DDNS Cloudflare PowerShell script for Windows.
- Choose any source IP address to update external or internal (WAN/LAN).
- For multiple LAN interfaces like Wifi, Docker Networks and Bridges the script will automatically detect the primary Interface by priority.
- Cloudflare's options for proxy and TTL configurable via the parameters.
- Optional Telegram or Discord Notifications
Requirements¶
- Cloudflare api-token with ZONE-DNS-EDIT Permissions
- DNS Record must be pre created (api-token should only edit dns records)
- Enabled running unsigned PowerShell
Creating Cloudflare API Token¶
To create a CloudFlare API token for your DNS zone go to https://dash.cloudflare.com/profile/api-tokens and follow these steps:
- Click Create Token
- Select Create Custom Token
- Provide the token a name, for example,
example.com-dns-zone-readonly - Grant the token the following permissions: - Zone - DNS - Edit
- Set the zone resources to: - Include - Specific Zone -
example.com - Complete the wizard and use the generated token at the
CLOUDFLARE_API_TOKENvariable for the container
Installation¶
Download the DDNS-Cloudflare-PowerShell zip file & Unzip, rename the folder to DDNS-Cloudflare-PowerShell place in a directory of your choosing
Config Parameters¶
Update the config parameters inside the update-cloudflare-dns_conf.ps1 by editing accordingly. See below for examples.
| Option | Example | Description |
|---|---|---|
| what_ip | internal | Which IP should be used for the record: internal/external |
| dns_record | ddns.example.com | DNS A record which will be updated |
| cloudflare_zone_api_token | ChangeMe | Cloudflare API Token KEEP IT PRIVATE!!!! |
| zoneid | ChangeMe | Cloudflare's Zone ID |
| proxied | false | Use Cloudflare proxy on dns record true/false |
| ttl | 120 | 120-7200 in seconds or 1 for Auto |
Optional Notifications Parameters for Telegram¶
| Option | Example | Description |
|---|---|---|
| notify_me_telegram | yes | Use Telegram notifications yes/no |
| telegram_chat_id | ChangeMe | Chat ID of the bot |
| telegram_bot_API_Token | ChangeMe | Telegram's Bot API Token |
Optional Notification Parameters for Discord¶
| Option | Example | Description |
|---|---|---|
| notify_me_discord | yes | Use Discord notifications yes/no |
| discord_webhook_URL | http://WebhookURL.com/asd/ | Webhook URL from your Discord server settings |
To generate a webhook URL, follow the official Discord instructions.
Running The Script¶
Open cmd/powershell
Example:
powershell.exe -ExecutionPolicy Bypass -File C:\DDNS-Cloudflare-PowerShell\update-cloudflare-dns.ps1
Automation With Windows Task Scheduler¶
Example: Run at boot with 1 min delay and repeat every 1 min
- Open Task Scheduler
- Action -> Crate Task
- General Menu
- Name: update-cloudflare-dns
- Run whether user is logged on or not
- Trigger
- New...
- Begin the task: At startup
- Delay task for: 1 minute
- Repeat task every: 1 minute
- for duration of: indefinitely
- Enabled
- Actions
- New...
- Action: Start a Program
- Program/script: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
- Add arguments: -ExecutionPolicy Bypass -File C:\DDNS-Cloudflare-PowerShell\update-cloudflare-dns.ps1
- ok
- Enter your user's password when prompted
- Conditions
- Power: Uncheck - [x] Start the task only if the computer is on AC power
Logs¶
This Script will create a log file with only the last run information
Log file will be located as same directory as update-cloudflare-dns.ps1
Log file name:
update-cloudflare-dns.log
Limitations¶
- Does not support IPv6
License¶
MIT License¶
Copyright© 3os.org @2020
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.