* Add support for running GCI on the GCE cloud provider ([#25425](https://github.com/kubernetes/kubernetes/pull/25425), [@andyzheng0831](https://github.com/andyzheng0831))
* Implement taints and tolerations ([#24134](https://github.com/kubernetes/kubernetes/pull/24134), [@kevin-wangzefeng](https://github.com/kevin-wangzefeng))

* A new `TaintNodesByCondition` admission plugin taints newly created Node objects as "not ready", to fix a race condition that could cause pods to be scheduled on new nodes before their taints were updated to accurately reflect their reported conditions. This admission plugin is enabled by default if the `TaintNodesByCondition` feature is enabled. ([#73097](https://gi...

- E2e framework: the `node-role.kubernetes.io/master` taint has been removed from the default value of `--non-blocking-taints` flag. You may need to set `--non-blocking-taints` explicitly if the cluster to be tested has nodes with the deprecated `node-role.kubernetes.io/master` taint. ([#118510](https://github.com/kubernetes/kubernetes/pull/118510), [@SataQiu](https://github.com/SataQiu)) [SIG Testing]

* Only set sysctls for infra containers ([#32383](https://github.com/kubernetes/kubernetes/pull/32383), [@sttts](https://github.com/sttts))
* fix kubectl taint e2e flake: add retries for removing taint ([#33872](https://github.com/kubernetes/kubernetes/pull/33872), [@kevin-wangzefeng](https://github.com/kevin-wangzefeng))

* fixes a panic applying json patches containing out of bounds operations ([#64355](https://github.com/kubernetes/kubernetes/pull/64355), [@liggitt](https://github.com/liggitt))
* Fixed NoTaintMaster to remove master taint and keep all other applied taints.  ([#64986](https://github.com/kubernetes/kubernetes/pull/64986), [@ashleyschuett](https://github.com/ashleyschuett))

  - The taint applied to control-plane nodes "node-role.kubernetes.io/master:NoSchedule" is now deprecated and will be removed in a future release after a GA deprecation period.
  - Apply toleration for a new, future taint "node-role.kubernetes.io/control-plane:NoSchedule" to the kubeadm CoreDNS / kube-dns managed manifests. Note that this taint is not yet applied to kubeadm control-plane nodes.

- Topology Aware Hints now ignores unready endpoints when assigning hints. ([#106510](https://github.com/kubernetes/kubernetes/pull/106510), [@robscott](https://github.com/robscott))

        public IntervalRule(final String from, final String to, final String days, final long delay) {
            final int[] fints = parseTime(from);
            fromHours = fints[0];
            fromMinutes = fints[1];
            final int[] tints = parseTime(to);
            toHours = tints[0];
            toMinutes = tints[1];
            final String[] values = days.split(",");
            final List<Integer> list = new ArrayList<>();

* Kubeadm now includes CoreDNS version 1.6.5 ([#85108](https://github.com/kubernetes/kubernetes/pull/85108), [@rajansandeep](https://github.com/rajansandeep))
    *  - `kubernetes` plugin adds metrics to measure kubernetes control plane latency.
    *  -  the `health` plugin now includes the `lameduck` option by default, which waits for a duration before shutting down.

- Kubeadm: only taint control plane nodes when the legacy "master" taint is present. This avoids a bug where "kubeadm upgrade" will re-taint a control plane node with the new "control plane" taint even if the user explicitly untainted the node. ([#109841](https://github.com/kubernetes/kubernetes/pull/109841), [@neolit123](https://github.com/neolit123)) [SIG...