- Made `apiextensions-apiserver` binary linking static (also affects the deb and rpm packages). ([#114226](https://github.com/kubernetes/kubernetes/pull/114226), [@saschagrunert](https://github.com/saschagrunert))
- Made `kube-aggregator` binary linking static (also affects the deb and rpm packages). ([#114227](https://github.com/kubernetes/kubernetes/pull/114227), [@saschagrunert](https://github.com/saschagrunert))

* kubeadm now sets peer URLs for the default etcd instance. Previously we left the defaults, which meant the peer URL was unsecured.
* Kubernetes now packages crictl in a cri-tools deb and rpm package. ([#64836](https://github.com/kubernetes/kubernetes/pull/64836), [@chuckha](https://github.com/chuckha))

- Kubeadm: Switched kubeadm to start using the CRI client library instead of shelling out of the `crictl` binary
  for actions against a CRI endpoint. The kubeadm deb/rpm packages will continue to install the `cri-tools`
  package for one more release, but in you must adapt your scripts to install `crictl` manually from
  https://github.com/kubernetes-sigs/cri-tools/releases or a different location.

kubeadm: Modifications to cluster-internal resources installed by kubeadm will be overwritten when upgrading from v1.6 to v1.7. ([#47081](https://github.com/kubernetes/kubernetes/pull/47081), [@luxas](https://github.com/luxas))

* kubeadm deb/rpm packages: cAdvisor doesn't listen on `0.0.0.0:4194` without authentication/authorization because of the possible information leakage. The cAdvisor API can still be accessed via `https://{node-ip}:10250/stats/`, though. ([kubernetes/release#356](htt...

* BugFix: Exited containers are not Garbage Collected by the kubelet while the pod is running ([#53167](https://github.com/kubernetes/kubernetes/pull/53167), [@dashpole](https://github.com/dashpole))
* - Improved generation of deb and rpm packages in bazel build ([#53163](https://github.com/kubernetes/kubernetes/pull/53163), [@kad](https://github.com/kad))