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Dynamic DNS using DigitalOcean's DNS Services
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Harald Ringvold 9b59388a58 Adding check for valid ip address 
In some cases the return body from ifconfig.co is an HTML error page.
This change makes sure the response is a valid IP address.
2021-03-20 21:09:58 +01:00
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dyndns.sh Adding check for valid ip address 2021-03-20 21:09:58 +01:00
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README.md

Dynamic DNS using DigitalOcean's DNS Services

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).

Setup

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!

Usage

Pick one of the options below using the following settings:

  • DIGITALOCEAN_TOKEN: The token you generate in DigitalOcean's API settings.
  • DOMAIN: The domain your subdomain is registered at. (i.e. foo.com for home.foo.com)
  • NAME: Subdomain to use. (name in A record) (i.e. home for home.foo.com). Multiple subdomains must be separated by semicolons ;
  • SLEEP_INTERVAL: Polling time in seconds. (default: 300)

Docker (Recommended)

$ docker pull tunix/digitalocean-dyndns
$ docker run -d --name dyndns \
    -e DIGITALOCEAN_TOKEN="your_token_here" \
    -e DOMAIN="yourdomain.com" \
    -e NAME="subdomain" \
    -e SLEEP_INTERVAL=2 \
    tunix/digitalocean-dyndns

Manual

You can also create a cronjob using below command:

$ DIGITALOCEAN_TOKEN="your_token_here" DOMAIN="yourdomain.com" NAME="subdomain" SLEEP_INTERVAL=2 ./dyndns.sh