dnsupdater

 Automatically update your DNS record to match your current external IP address.

中文版

This app allows you updating your DNS records with your current external IP address.

It is recommended to run this program in your home server, or in your router。

You should NEVER run this program behind a proxy or a VPN. Running it behind a proxy is an unconsidered and untested scenario.

How-to

• Download the latest release for your target

• Extract the archive.

• Rename config.yaml.template to config.yaml.

• Finish your configuration in the config.yaml

• Upload dnsupdater and config.yaml to the device you want this app to run. These 2 files must be under the same directory.

• Set up a cron job like

0 0,12 * * * /home/yourname/dnsupdater/dnsupdater > /var/log/update-dns.log 2>&1 &

Important notes in configuration

• The APIKey for your CloudFlare records should be a dedicated API token. You can generate one here with template Edit zone DNS.

• Do not modify the property RegionID for your Aliyun DNS records. cn-hangzhou is the only accepted value for now.

• About JSON path

Here's a list of operators used in JSON path:

Operator	Description
$	The root element to query. This starts all path expressions.
@	The current node being processed by a filter predicate.
*	Wildcard. Available anywhere a name or numeric are required.
..	Deep scan. Available anywhere a name is required.
.<name>	Dot-notated child
['<name>' (, '<name>')]	Bracket-notated child or children
[<number> (, <number>)]	Array index or indexes
[start:end]	Array slice operator
[?(<expression>)]	Filter expression. Expression must evaluate to a boolean value.

So if you have a JSON like this:

{
  "ip": "103.156.184.21",
  "tz": "Asia/Taipei"
}

You can use $.ip to obtain the value in the field ip.

Build for other platforms

You can check for all preset targets by running the scripts in the scripts folder.

For Windows users:

build.bat /?

For *NIX users:

make help

Or you can specify your own GOARCH and GOOS (and maybe GOMIPS) with go build command to build the executable for your platform as long as Go provides support to it.

from https://github.com/boris1993/dnsupdater