40 lines
1.8 KiB
Markdown
40 lines
1.8 KiB
Markdown
# Dynamic DNS using DigitalOcean's DNS Services
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[](https://microbadger.com/images/tunix/digitalocean-dyndns "Get your own image badge on microbadger.com")
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A script that pushes the public IP address of the running machine to DigitalOcean's DNS API's. It requires an existing A record to update. The resulting container image is roughly around 7 MB (thanks to Alpine Linux).
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## Setup
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Assuming you already have a DigitalOcean account and your domain associated with it. Just add an A record with desired name and IP address. That's it!
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## Usage
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Pick one of the options below using the following settings:
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* **DIGITALOCEAN_TOKEN:** The token you generate in DigitalOcean's API settings.
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* **DOMAIN:** The domain your subdomain is registered at. (i.e. `foo.com` for `home.foo.com`)
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* **NAME:** Subdomain to use. (name in A record) (i.e. `home` for `home.foo.com`). Multiple subdomains must be separated by semicolons `;`
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* **SLEEP_INTERVAL:** Polling time in seconds. (default: 300)
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* **REMOVE_DUPLICATES:** If set to `"true"`, removes extra DNS records if more than one A record is found on a subdomain. *Note that if this is not enabled, the script will NOT update subdomains with more than one A record* (default: false)
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### Docker (Recommended)
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```
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$ docker pull code.tjo.space/mentos1386/digitalocean-dyndns:main
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$ docker run -d --name dyndns \
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-e DIGITALOCEAN_TOKEN="your_token_here" \
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-e DOMAIN="yourdomain.com" \
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-e NAME="subdomain" \
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-e SLEEP_INTERVAL=2 \
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-e REMOVE_DUPLICATES="true" \
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code.tjo.space/mentos1386/digitalocean-dyndns:main
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```
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### Manual
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You can also create a cronjob using below command:
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```
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$ DIGITALOCEAN_TOKEN="your_token_here" DOMAIN="yourdomain.com" NAME="subdomain" SLEEP_INTERVAL=2 ./dyndns.sh
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```
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