I need help regarding my dynamic IP and cloudfares API

I need help to understand some thing regarding my changing/dynamic IP-adress. I understand it like I can use cloudfares API when I have this problem, because I host my own web-site and this can be a solution.
If I’ve understood it right I have to add a zone file or something like that in my ubuntu server and I al-ready change the nameservers to cloudfares own. But how do I do that in my ubuntu server?

You don’t need to add a zone file or anything, no.

You just need a script to run which checks your current public IP and then updates your record at Cloudflare with that value periodically via an API call.

Just have a search online for something like cloudflare dynamic IP script or similar and you’ll find lots of examples if you don’t want to roll your own.

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