Kube-proxy can run on each and every node and can do simple TCP/UDP packet forwarding across backend network service.
So basically, it is a network proxy that reflects the services as configured in Kubernetes API on each node.
So, the Docker-linkable compatible environment variables provide the cluster IPs and ports which are opened by proxy.
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Kube-proxy is basically a network proxy that is made up of configured services in Kubernetes API.
It runs on each and every node and can do packet forwarding across multiple services.
Kube-proxy can also run on each and every node.
It can do simple TCP/UDP packet forwarding all across the backend network service.
A Docker-linkable compatible environment can also provide the various IPs and ports that can be opened using a proxy.
Read more: https://javarevisited.blogspot.com/2022/05/kubernetes-interview-questions-answers.html#ixzz7oQkYXUvG