Kubernetes Home – what do you do if your ISP changes your IP addresses?

Kubernetes@Home – what do you do if your ISP changes your IP addresses? In my last blog post I described external-DNS, which is a way to have Kubernetes create and update DNS entries for its services. But as I mentioned, it got me thinking a bit on ways to extend this concept to handle other external aspects of my Kubernetes environment. My ISP is in total control over my external IP addresses. I don’t pay for permanent IP addresses, and while they haven’t so far changed neither my IPv4 address or my IPv6 network, it can happen. Probably by mistake, since I have no kept my current ones for three months. But accidents happen, and usually at the worst possible time, so can I be prepared for it? Of course I can. However, it did require a bit of programming! Firewall My firewall at home is a Unifi Cloud Gateway Max, which I’m pretty happy with so far. My firewall policy for IPv4 is pretty simple, it’s port forwarding on a single external IP to private addresses externally. For IPv6 ... Read full article.