A small script to automatically update the IP address(es) attached to a CloudFlare DNS record(s).
This was written in somewhat of a hurry to allow a Raspberry PI to host some university projects.
The config.json file's records array can handle individual DNS records in this format:
{
"ip": "",
"checkIntervalMS": 0,
"logging": "",
"records": [
{
"authEmail": "example1@example.com",
"authKey": "0000000000000000000000000000000000000",
"zoneName": "example1.com",
"zoneIdentifier": "",
"recordName": "example1.com",
"recordIdentifier": ""
},
{
"authEmail": "example2@example.com",
"authKey": "0000000000000000000000000000000000000",
"zoneName": "example2.com",
"zoneIdentifier": "",
"recordName": "example2.com",
"recordIdentifier": ""
}
]
}The authEmail field is the email that is registered with the domain, and authKey can be obtained from https://dash.cloudflare.com/profile/api-tokens, in the "Global API Key" section.
The zoneName should be set to the root domain name of the website, while the recordName is the name of the A Type record.
Both zoneIdentifier and recordIdentifier should be left empty, along with the ip field on the top of the file; these will be filled out by the script on startup.
The checkIntervalMS property can be used to set how often, in milliseconds, the script should check if the IP address has changed. By default it is set to 0 minutes, which disables this function. This is useful if the script is periodically called from another source (for example from cron).
Once started, this script runs once - or if the checkIntervalMS property is set, indefinitely - and logs any issues into ./logs/log.txt.
For full logging (write to logline everytime a check has been done, regardless if the IP changed), set logging to 'full'.
The script checks for the machine's IP address by sending a get request to a great external service, https://www.ipify.org/ <3.