https://github.com/iam-medvedev/vercel-ddns

Vercel Dynamic DNS
https://github.com/iam-medvedev/vercel-ddns

Last synced: 2 months ago
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Vercel Dynamic DNS

• Host: GitHub
• URL: https://github.com/iam-medvedev/vercel-ddns
• Owner: iam-medvedev
• Created: 2021-01-17T06:45:43.000Z (almost 4 years ago)
• Default Branch: master
• Last Pushed: 2024-05-27T20:18:48.000Z (7 months ago)
• Last Synced: 2024-10-15T04:12:09.833Z (3 months ago)
• Language: Shell
• Size: 3.91 KB
• Stars: 15
• Watchers: 1
• Forks: 3
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

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README

        
# Vercel Dynamic DNS

Simple script for exposing a local server with [Vercel DNS](https://vercel.com/docs/custom-domains).

It runs on CRON, checking the current IP address and updating DNS records for your domain.

## Installation

1. Ensure that you have [jq](https://github.com/jqlang/jq) installed

2. Download `dns-sync.sh`

3. Move `dns.config.example` to `dns.config`

4. Edit the configuration variables as required

5. Open the cron settings using the command `crontab -e`

6. Add the following line to the cron job: `*/15 * * * * /path-to/vercel-ddns/dns-sync.sh`

## Usage example

```sh

# Creating

➜  ./dns-sync.sh

Updating IP: x.x.x.x

Record for SUBDOMAIN does not exist. Creating...

🎉 Done!

# Updating

➜  ./dns-sync.sh

Updating IP: x.x.x.x

Record for SUBDOMAIN already exists (id: rec_xxxxxxxxxxxxxxxxxxxxxxxx). Updating...

🎉 Done!

```

## Docker

There is a dockerized version of `vercel-ddns` with `CRON`.

Create 3 files in your directory:

1. `Dockerfile`.

2. `start.sh` - docker entry point

3. `dns.config` - configuration for `vercel-ddns`.

`Dockerfile`:

```dockerfile

FROM alpine:latest

WORKDIR /root

# Installing dependencies

RUN apk --no-cache add dcron curl jq bash

SHELL ["/bin/bash", "-c"]

# Cloning config and start file

COPY dns.config /root/dns.config

COPY start.sh /root/start.sh

# Cloning app

RUN curl -o /root/dns-sync.sh https://raw.githubusercontent.com/iam-medvedev/vercel-ddns/master/dns-sync.sh

RUN chmod +x /root/dns-sync.sh

# Setting up cron

RUN echo "*/30 * * * * /root/dns-sync.sh >> /var/log/dns-sync.log 2>&1" >> /etc/crontabs/root

# Starting

CMD ["bash", "/root/start.sh"]

```

`start.sh`:

```sh

# Performs the first sync and starts CRON

bash /root/dns-sync.sh && crond -f

```