Vercel Dynamic DNS Updater

This script automatically updates a DNS A record on Vercel with the current external IP address of the machine it's run on. It's ideal for use in environments with dynamic IP addresses where you need to maintain a consistent domain pointing to a changing IP.

Requirements

bash
curl
jq: This script uses jq for parsing JSON responses.

Setup

Install jq

On Ubuntu/Debian:
```
sudo apt-get install jq
```
On CentOS/Fedora:
```
sudo yum install jq
```
On macOS:
```
brew install jq
```

Clone the Repository

Clone this repository to your local machine where you plan to run the script.

git clone https://github.com/saviobatista/vercel-dynamic-dns-updater.git
cd vercel-dynamic-dns-updater

Configure Environment Variables Copy the .env.example file to a new file named .env and fill in your Vercel API token, DNS record ID, and the subdomain you wish to update.

cp .env.example .env
# Edit .env with your preferred text editor

Your .env file should look something like this:

RECORD=<RECORD_ID>
TOKEN=<TOKEN>
SUBDOMAIN=<SUBDOMAIN>

Make the Script Executable Change the script's permissions to make it executable.

chmod +x cron.sh

Usage

Run the script manually to update your DNS record:

./cron.sh

To automate this process, consider adding the script to your crontab. For example, to run the script every hour, edit your crontab with crontab -e and add the following line:

0 * * * * /path/to/cron.sh

Make sure to replace /path/to/cron.sh with the actual path to the script.

Troubleshooting

Ensure your .env file is configured correctly.
Verify that jq is installed and accessible in your PATH.
Check the script's output for any error messages or HTTP status codes that indicate what might have gone wrong.

Contributing

Feel free to fork the repository and submit pull requests with any enhancements or fixes.

License

This script is open-sourced software licensed under the MIT license.