A simple application to fetch your External IP address and then to update the IP address of an A record of a domain you own in Linode. This acts as a simple Dynamic DNS service if you schedule it to run form within your office/home. The application is written in Go
Copy and rename the example config file 'addns.json.example' to 'addns.json'. You can place this in the same folder as the binary, or in your home folder. The application will look in the same folder first, then in your home folder.
cp addns.json.example addns.json
To find your home folder, it will look for an environment variable called HOME with a path in it.
matt@silverark:~$ echo $HOME
/home/matt
Make sure you stick to the types defined in the config file. The access token is a string. The ID's are integers so don't wrap them in quotes.
To update the DNS of one of your records you need to generate a Personal Access Token from Linode's Cloud Manager
Place the Token in the config file, and find the DomainId and RecordId from your cloud manager.
Move in to the addns folder and run the following to build the binary.
go build
Just run the binary. On success we simply print out the results that are returned from Linode.
matt@silverark:~$ ./addns
Query Result: {"id": 13860830, "ttl_sec": 300, "priority": 0, "port": 0, "type": "A", "protocol": null, "weight": 0, "name": "ddns", "tag":
null, "service": null, "target": "99.99.168.63"}
If there are errors, they will be printed out too.
matt@silverark:~$ ./addns
Query Result: {"errors": [{"reason": "Invalid OAuth Token"}]}