khadi

"Khadi refers to handwoven cloth. Mahatma Gandhi started spinning himself and encouraging others to do so."

What is it?

khadi is a bash based cli for Gandi's LiveDNS API

What can I do with it?

Anything that Gandi's LiveDNS API allows, but in short:

• manage DNS Zone templates that you can integrate into your own workflow
  • including updating A (ip address) or any other DNS records
• bulk record management
• association with multiple domains
• versioning
• rollback

khadi does not support all of it yet, but the support is added on demand: i.e. if you miss something, you are welcome to open an issue or submit a pull request.

Setup khadi

In order to use Gandi's LiveDNS API, you have to create you API key as described in API's docs.

Once you have the key, create a ~/.khadi/config file and paste your key there:

$ cat ~/.khadi/config
api_key=FxNoG7le4xPwn20b1h4x5Zsj

this will enable khadi to work with Gandi's API without asking for an API key. It is also a bit more secure than to have a trail of this key in the bash history.

now you are ready to run scripts from this repo:

$ git clone https://github.com/tolitius/khadi.git
$ cd khadi

and 👇

Creating a DNS zone template

In order to create a zone template have your domain name ready (let's say it is "example.com"):

$ ./create-zone.sh example.com

...
{"message": "Zone Created", "uuid": "d019a4c1-0627-4b2d-9efb-ad182679eab7"}

this step might be automated later, but before it is add this zone uuid prefixed with zone_ to your ~/.khadi/config:

$ echo zone_examplecom=d019a4c1-0627-4b2d-9efb-ad182679eab7 >> ~/.khadi/config

notice to exclude the . in the domain name key: i.e. example.com => examplecom

$ cat ~/.khadi/config
api_key=FxNoG7le4xPwn20b1h4x5Zsj
zone_examplecom=d019a4c1-0627-4b2d-9efb-ad182679eab7

at this point this zone template can be referenced by the domain name:

$ ./do-whatever-dns-command-that-uses-this-zone example.com

Link zone template to domain

In order for DNS records of the zone template to be connected to a domain name, zone uuid and domain name should be associated/linked.

You can link them by:

$ ./link-to-domain.sh example.com
HTTP/1.1 201 Created
...
Location: https://dns.api.gandi.net/api/v5/domains/example.com

{"message": "Domain Created"}

khadi picked up the zone uuid from the ~/.khadi/config file to link it to example.com.

Now it is time to "live" update these juicy DNS records.

Update domain's IP address

This example will update 3 DNS A recrods with an IP address of the box it is running on.

These 3 DNS records will be updated:

www IN A $ip_address
*   IN A $ip_address
@   IN A $ip_address

The reason for this script to be that specific is the quite frequent need to update an IP address of the domain:

• domain points to a "hosting solution" service / server that is running with a dynamic IP
• domain points to a home server / service where ISP changes IP address randomly

In order to update the IP address:

$ ./update-ip-address.sh example.com
updating DNS records for example.com to 98.118.10.32 ip address...
HTTP/1.1 201 Created
...
Location: https://dns.api.gandi.net/api/v5/zones/d019a4c1-0627-4b2d-9efb-ad182679eab7/records
...
{"message": "DNS Zone Record Created"}

notice khadi used the zone uuid that we created earlier.

At this point this update script can be cron'ed / scheduled to run on the server with a dynamic IP address periodically to make sure Gandi always has the latest IP address for this domain.

Check domain DNS records

Besides logging in to the Gandi's dashboard and checking records there, they can be checked from command line with ./check-records.sh:

$ ./check-records.sh example.com

[
  {
    "rrset_type": "A",
    "rrset_ttl": 10800,
    "rrset_name": "*",
    "rrset_href": "https://dns.api.gandi.net/api/v5/zones/d019a4c1-0627-4b2d-9efb-ad182679eab7/records/%2A/A",
    "rrset_values": [
      "98.118.10.32"
    ]
  },
  {
    "rrset_type": "A",
    "rrset_ttl": 10800,
    "rrset_name": "@",
    "rrset_href": "https://dns.api.gandi.net/api/v5/zones/d019a4c1-0627-4b2d-9efb-ad182679eab7/records/%40/A",
    "rrset_values": [
      "98.118.10.32"
    ]
  },
  {
    "rrset_type": "A",
    "rrset_ttl": 10800,
    "rrset_name": "www",
    "rrset_href": "https://dns.api.gandi.net/api/v5/zones/d019a4c1-0627-4b2d-9efb-ad182679eab7/records/www/A",
    "rrset_values": [
      "98.118.10.32"
    ]
  }
]

noice!

License

Copyright © 2020 tolitius

Distributed under the Eclipse Public License either version 1.0 or (at your option) any later version.