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https://github.com/hugomd/cloudflare-ddns
Zero dependency dynamic DNS 🐳
https://github.com/hugomd/cloudflare-ddns
cloudflare ddns dns docker golang
Last synced: about 2 months ago
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Zero dependency dynamic DNS 🐳
- Host: GitHub
- URL: https://github.com/hugomd/cloudflare-ddns
- Owner: hugomd
- License: mit
- Created: 2018-08-03T07:25:47.000Z (about 6 years ago)
- Default Branch: master
- Last Pushed: 2021-07-25T03:12:29.000Z (about 3 years ago)
- Last Synced: 2024-06-25T17:59:58.269Z (3 months ago)
- Topics: cloudflare, ddns, dns, docker, golang
- Language: Go
- Homepage:
- Size: 70.3 KB
- Stars: 62
- Watchers: 4
- Forks: 14
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# Dynamic DNS
[](https://microbadger.com/images/hugomd/cloudflare-ddns "Get your own image badge on microbadger.com") [](https://microbadger.com/images/hugomd/cloudflare-ddns "Get your own version badge on microbadger.com")
> Updates a given a DNS record with your current IP
Example with the Cloudflare [provider](#supported-providers):
```
docker run \
-e PROVIDER=cloudflare \
-e CLOUDFLARE_APITOKEN=YOUR_API_TOKEN \
-e CLOUDFLARE_ZONEID=YOUR_ZONE_ID \
-e CLOUDFLARE_HOST=YOUR_DOMAIN \
hugomd/cloudflare-ddns:2.1.0
```
Example running as a persistant daemon:
```
docker run -d --restart always \
-e PROVIDER=cloudflare \
-e CLOUDFLARE_APITOKEN=YOUR_API_TOKEN \
-e CLOUDFLARE_ZONEID=YOUR_ZONE_ID \
-e CLOUDFLARE_HOST=YOUR_DOMAIN \
hugomd/cloudflare-ddns:2.1.0 -duration 2h
```
You can load environment variables through a config file of key/value pairs.
```sh
echo "PROVIDER=YOUR_PROVIDER" > config.env
docker run \
-v $PWD/config.env:/tmp/config.env \
hugomd/cloudflare-ddns -config /tmp/config.env
```
**A note about Docker image tags**: `latest` currently points to a now deprecated version of `cloudflare-ddns`, please use versioned tags e.g. `hugomd/cloudflare-ddns:2.0.0`.
# Supported Providers
| Provider | Reference (used for `PROVIDER` environment variable) |
|--------------------------------------|------------------------------------------------------|
| [Cloudflare](https://cloudflare.com) | `cloudflare` |
# CLI
| Parameter | Description | Example | Required |
|-----------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-------------------|----------|
| `-duration` | Runs program perpetually and recheck after specified interval; parses time strings such as `5m`, `15m`, `2h30m5s`. If not specified, or if equal to 0s, run once and exit. | 2h | `false` |
| `-config` | Loads environment variables from a given file. Variables should be specified as lines of `key=value` pairs. No variables will be loaded if a file is not specified. | `/tmp/config.env` | `false` |
| `-ipv4` | Enable updates for IPv4 records. Default is `true` | `false` | `false` |
| `-ipv6` | Enable updates for IPv6 records. Default is `false` | `true` | `false` |
# Environment Variables
All providers require the following environment variable:
| Environment Variable | Description | Example | Required |
|---------------------------------|-----------------------------------------|---------------|----------|
| `PROVIDER` | The name of the provider you wish to use | `cloudflare` | `true` |
## Cloudflare
| Environment Variable | Description | Example | Required |
| ---------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------- | -------- |
| `CLOUDFLARE_APITOKEN` | An [API Token](https://support.cloudflare.com/hc/en-us/articles/200167836-Managing-API-Tokens-and-Keys), with permission to edit DNS records for your zone | `12345` | `true` |
| `CLOUDFLARE_ZONEID` | The Zone ID of your domain in Cloudflare (you can find this in the "Overview" tab at the bottom of the page) | `dd255baaaaad2e8...` | `true` |
| `CLOUDFLARE_HOST` | The record you want to update | `subdomain.example.com` | `true` |
### Deprecated Environment Variables
Cloudflare now [supports API tokens](https://blog.cloudflare.com/api-tokens-general-availability/) as a more secure way of interacting with their API. Instead of using your global API key/email, you should use a token with limited permissions.
When upgrading, you'll need to replace a few existing environment variables.
Instead of providing a `CLOUDFLARE_ZONE` with your domain name, you should specify the Zone ID (`CLOUDFLARE_ZONEID`) of your domain. You can find this in the "Overview" tab for your domain.
Instead of your `CLOUDFLARE_EMAIL` and `CLOUDFLARE_APIKEY`, you should [generate a token](https://support.cloudflare.com/hc/en-us/articles/200167836-Managing-API-Tokens-and-Keys#12345680) (`CLOUDFLARE_APITOKEN`) with permission to edit DNS records for your desired zone.
You don't need to make any changes to your `CLOUDFLARE_HOST`.
# Contributing
## Adding a new provider
To add a new provider:
1. Create a new folder in [`lib/providers`](https://github.com/hugomd/cloudflare-ddns/tree/master/lib/providers), called `your_provider`
2. Create a package for your provider in the previously created folder, `your_provider`.
3. Ensure your provider implements the `Provider` interface
4. Import your provider in [`lib/providers/_all/all.go`](https://github.com/hugomd/cloudflare-ddns/blob/master/lib/providers/_all/all.go)
5. Open a PR 🎉
# License
MIT, see [LICENSE](./LICENSE).