Although my home IP is relatively static with my current ISP it is still consumer grade internet and thus subject to change. I have a few services that I would like to access from outside my home network, the main one being the link between Cloudflare and my home network for my blog.
So to avoid possible outages on my blog I have created a script that will update the Cloudflare DNS record with my current home IP address.
This works as follows:
- Get the current public IP address of the home network
- Get the current IP address of the DNS record in Cloudflare
- If the IP addresses are different, update the DNS record with the new IP address
- Python 3.11+
- Cloudflare API Token
This intended for use with self hosted kubernetes clusters. The following steps will guide you through the installation.
Create Two Secrets in the namespace where you want to deploy the script. The secrets should be named
website-domain-secret and cf-secret respectively.
# creates the secret for the Cloudflare hosted domain.
create secret generic website-domain-secret --from-literal=website-domain="MY_DOMAIN_NAME"
# creates the secret for the Cloudflare API Token
kubectl create secret generic cf-secret --from-literal=cf-token="MY_TOKEN"Tip
Apply namespace as required.
Apply the schedule.yaml file to the cluster. This will create a cronjob that will run the script every 5 minutes.
kubectl apply schedule.yaml