k3s/build/kube-dns/README.md

DNS in Kubernetes

Kubernetes offers a DNS cluster addon, which most of the supported environments enable by default. The source code is in cmd/kube-dns.

The Kubernetes DNS Admin Guide provides further details on this plugin.

Making Changes

The container containing the kube-dns binary needs to be built for every architecture and pushed to the registry manually whenever the kube-dns binary has code changes. Every significant change to the functionality should result in a bump of the TAG in the Makefile.

Any significant changes to the YAML template for kube-dns should result a bump of the version number for the kube-dns replication controller and well as the version label. This will permit a rolling update of kube-dns.