How to update IP address on Cloudflare

Hosting your services from home? But ISP is providing Dynamic IP Address?

In my scenario, I’ll be using a Synology’s Task Scheduler and Cloudflare.

1. You’ll need to get all the details for the following variables

    #Email associated with your Cloudflare account
    EMAIL=""
    #Global API Key
    KEY=""
    #Unique ID provided by Cloudflare
    ZONE_ID=""
   

2. To get your KEY, go to your Cloudflare Profile > API Tokens and copy your Global API Key

3. To get your ZONE_ID, go to your domain Overview, on the left panel you’ll see the API Zone ID, copy that.

4. Put them all together and you get something like this:

    #Email associated with your Cloudflare account
    EMAIL="admin@example.com"
    #Global API Key
    KEY="xxxxxxxx"
    #Unique ID provided by Cloudflare
    ZONE_ID="xxxxxxxx"
    #Record type
    TYPE="A"
    #Domain or Subdomain
    NAME="example.com"
    #Get IP Address
    CONTENT="`curl https://ifconfig.co`"
    #Enable Cloudflare proxy
    PROXIED="true" 
    #In seconds, use 1 for automatic
    TTL="1"
   
    #The Code
    curl -X POST "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/" /
    	-H "X-Auth-Email: $EMAIL" /
    	-H "X-Auth-Key: $KEY" /
    	-H "Content-Type: application/json" /
    	--data '{"type":"'"$TYPE"'","name":"'"$NAME"'","content":"'"$CONTENT"'","proxied":'"$PROXIED"',"ttl":'"$TTL"'}'
   

5. Create a Task Scheduler and drop this script there.

6. Buy me a drink on Ko-Fi :)

And that’s how you update Cloudflare with a Dynamic IP Address.