* The --dns-provider argument of 'kubefed init' is now mandatory and does not default to `google-clouddns`. To initialize a Federation control plane with Google Cloud DNS, use the following invocation: 'kubefed init --dns-provider=google-clouddns' ([#42092](https://github.com/kubernetes/kubernetes/pull/42092), [@marun](https://github.com/marun))
* Change taints/tolerations to api fields ([#38957](https://github.com/kubernetes/kubernetes/pull/38957), [@aveshagarwal](https://github.com/aveshagarwal))
### Other notable changes
* kubeadm: Rename some flags for beta UI and fixup some logic ([#42064](https://github.com/kubernetes/kubernetes/pull/42064), [@luxas](https://github.com/luxas))
* StorageClassName attribute has been added to PersistentVolume and PersistentVolumeClaim objects and should be used instead of annotation `volume.beta.kubernetes.io/storage-class`. The beta annotation is still working in this release, however it will be removed in a future release. ([#42128](https://github.com/kubernetes/kubernetes/pull/42128), [@jsafrane](https://github.com/jsafrane))
* Remove Azure kube-up as the Azure community has focused efforts elsewhere. ([#41672](https://github.com/kubernetes/kubernetes/pull/41672), [@mikedanese](https://github.com/mikedanese))
* Fluentd-gcp containers spawned by DaemonSet are now configured using ConfigMap ([#42126](https://github.com/kubernetes/kubernetes/pull/42126), [@Crassirostris](https://github.com/Crassirostris))
* Modified kubemark startup scripts to restore master on reboot ([#41980](https://github.com/kubernetes/kubernetes/pull/41980), [@shyamjvs](https://github.com/shyamjvs))
* Added new Api `PodPreset` to enable defining cross-cutting injection of Volumes and Environment into Pods. ([#41931](https://github.com/kubernetes/kubernetes/pull/41931), [@jessfraz](https://github.com/jessfraz))
* AWS cloud provider: allow to run the master with a different AWS account or even on a different cloud provider than the nodes. ([#39996](https://github.com/kubernetes/kubernetes/pull/39996), [@scheeles](https://github.com/scheeles))
* Update defaultbackend image to 1.3 ([#42212](https://github.com/kubernetes/kubernetes/pull/42212), [@timstclair](https://github.com/timstclair))
* Allow the Horizontal Pod Autoscaler controller to talk to the metrics API and custom metrics API as standard APIs. ([#41824](https://github.com/kubernetes/kubernetes/pull/41824), [@DirectXMan12](https://github.com/DirectXMan12))
* Implement support for mount options in PVs ([#41906](https://github.com/kubernetes/kubernetes/pull/41906), [@gnufied](https://github.com/gnufied))
* Introduce apps/v1beta1.Deployments resource with modified defaults compared to extensions/v1beta1.Deployments. ([#39683](https://github.com/kubernetes/kubernetes/pull/39683), [@soltysh](https://github.com/soltysh))
* Add DNS suffix search list support in Windows kube-proxy. ([#41618](https://github.com/kubernetes/kubernetes/pull/41618), [@JiangtianLi](https://github.com/JiangtianLi))
*`--experimental-nvidia-gpus` flag is **replaced** by `Accelerators` alpha feature gate along with support for multiple Nvidia GPUs. ([#42116](https://github.com/kubernetes/kubernetes/pull/42116), [@vishh](https://github.com/vishh))
* To use GPUs, pass `Accelerators=true` as part of `--feature-gates` flag.
* Works only with Docker runtime.
* Clean up the kube-proxy container image by removing unnecessary packages and files. ([#42090](https://github.com/kubernetes/kubernetes/pull/42090), [@timstclair](https://github.com/timstclair))
* AWS: Support shared tag `kubernetes.io/cluster/<clusterid>` ([#41695](https://github.com/kubernetes/kubernetes/pull/41695), [@justinsb](https://github.com/justinsb))
* Insecure access to the API Server at localhost:8080 will be turned off in v1.6 when using kubeadm ([#42066](https://github.com/kubernetes/kubernetes/pull/42066), [@luxas](https://github.com/luxas))
* AWS: Do not consider master instance zones for dynamic volume creation ([#41702](https://github.com/kubernetes/kubernetes/pull/41702), [@justinsb](https://github.com/justinsb))
* Added foreground garbage collection: the owner object will not be deleted until all its dependents are deleted by the garbage collector. Please checkout the [user doc](https://kubernetes.io/docs/concepts/abstractions/controllers/garbage-collection/) for details. ([#38676](https://github.com/kubernetes/kubernetes/pull/38676), [@caesarxuchao](https://github.com/caesarxuchao))
* deleteOptions.orphanDependents is going to be deprecated in 1.7. Please use deleteOptions.propagationPolicy instead.
* force unlock rbd image if the image is not used ([#41597](https://github.com/kubernetes/kubernetes/pull/41597), [@rootfs](https://github.com/rootfs))
* The kubernetes-master, kubernetes-worker and kubeapi-load-balancer charms have gained an nrpe-external-master relation, allowing the integration of their monitoring in an external Nagios server. ([#41923](https://github.com/kubernetes/kubernetes/pull/41923), [@Cynerva](https://github.com/Cynerva))
* make kubectl describe pod show tolerationSeconds ([#42162](https://github.com/kubernetes/kubernetes/pull/42162), [@kevin-wangzefeng](https://github.com/kevin-wangzefeng))
* Completed pods should not be hidden when requested by name via `kubectl get`. ([#42216](https://github.com/kubernetes/kubernetes/pull/42216), [@smarterclayton](https://github.com/smarterclayton))
*[Federation][Kubefed] Flag cleanup ([#41335](https://github.com/kubernetes/kubernetes/pull/41335), [@irfanurrehman](https://github.com/irfanurrehman))
* Add the support to the scheduler for spreading pods of StatefulSets. ([#41708](https://github.com/kubernetes/kubernetes/pull/41708), [@bsalamat](https://github.com/bsalamat))
* Portworx Volume Plugin added enabling [Portworx](http://www.portworx.com) to be used as a storage provider for Kubernetes clusters. Portworx pools your servers capacity and turns your servers or cloud instances into converged, highly available compute and storage nodes. ([#39535](https://github.com/kubernetes/kubernetes/pull/39535), [@adityadani](https://github.com/adityadani))
* Remove support for trusty in GCE kube-up. ([#41670](https://github.com/kubernetes/kubernetes/pull/41670), [@mikedanese](https://github.com/mikedanese))
* Import a natural sorting library and use it in the sorting printer. ([#40746](https://github.com/kubernetes/kubernetes/pull/40746), [@matthyx](https://github.com/matthyx))
* Parameter keys in a StorageClass `parameters` map may not use the `kubernetes.io` or `k8s.io` namespaces. ([#41837](https://github.com/kubernetes/kubernetes/pull/41837), [@liggitt](https://github.com/liggitt))
* Make DaemonSet respect critical pods annotation when scheduling. ([#42028](https://github.com/kubernetes/kubernetes/pull/42028), [@janetkuo](https://github.com/janetkuo))
* New Kubelet flag `--enforce-node-allocatable` with a default value of `pods` is added which will make kubelet create a top level cgroup for all pods to enforce Node Allocatable. Optionally, `system-reserved` & `kube-reserved` values can also be specified separated by comma to enforce node allocatable on cgroups specified via `--system-reserved-cgroup` & `--kube-reserved-cgroup` respectively. Note the default value of the latter flags are "". ([#41234](https://github.com/kubernetes/kubernetes/pull/41234), [@vishh](https://github.com/vishh))
* This feature requires a **Node Drain** prior to upgrade failing which pods will be restarted if possible or terminated if they have a `RestartNever` policy.
* Deployment of AWS Kubernetes clusters using the in-tree bash deployment (i.e. cluster/kube-up.sh or get-kube.sh) is obsolete. v1.5.x will be the last release to support cluster/kube-up.sh with AWS. For a list of viable alternatives, see: http://kubernetes.io/docs/getting-started-guides/aws/ ([#42196](https://github.com/kubernetes/kubernetes/pull/42196), [@zmerlynn](https://github.com/zmerlynn))
* kubectl logs allows getting logs directly from deployment, job and statefulset ([#40927](https://github.com/kubernetes/kubernetes/pull/40927), [@soltysh](https://github.com/soltysh))
* make kubectl taint command respect effect NoExecute ([#42120](https://github.com/kubernetes/kubernetes/pull/42120), [@kevin-wangzefeng](https://github.com/kevin-wangzefeng))
* Flex volume plugin is updated to support attach/detach interfaces. It broke backward compatibility. Please update your drivers and implement the new callouts. ([#41804](https://github.com/kubernetes/kubernetes/pull/41804), [@chakri-nelluri](https://github.com/chakri-nelluri))
* Implement the update feature for DaemonSet. ([#41116](https://github.com/kubernetes/kubernetes/pull/41116), [@lukaszo](https://github.com/lukaszo))
*[Federation] Create configmap for the cluster kube-dns when cluster joins and remove when it unjoins ([#39338](https://github.com/kubernetes/kubernetes/pull/39338), [@irfanurrehman](https://github.com/irfanurrehman))
* New GKE certificates controller. ([#41160](https://github.com/kubernetes/kubernetes/pull/41160), [@pipejakob](https://github.com/pipejakob))
* Juju: Fix shebangs in charm actions to use python3 ([#42058](https://github.com/kubernetes/kubernetes/pull/42058), [@Cynerva](https://github.com/Cynerva))
* Support kubectl apply set-last-applied command to update the applied-applied-configuration annotation ([#41694](https://github.com/kubernetes/kubernetes/pull/41694), [@shiywang](https://github.com/shiywang))
* On GCI by default logrotate is disabled for application containers in favor of rotation mechanism provided by docker logging driver. ([#40634](https://github.com/kubernetes/kubernetes/pull/40634), [@Crassirostris](https://github.com/Crassirostris))
* Cleanup fluentd-gcp image: rebase on debian-base, switch to upstream packages, remove fluent-ui & rails ([#41998](https://github.com/kubernetes/kubernetes/pull/41998), [@timstclair](https://github.com/timstclair))
* Updating apiserver to return http status code 202 for a delete request when the resource is not immediately deleted because of user requesting cascading deletion using DeleteOptions.OrphanDependents=false. ([#41165](https://github.com/kubernetes/kubernetes/pull/41165), [@nikhiljindal](https://github.com/nikhiljindal))
*[Federation][kubefed] Support configuring dns-provider ([#40528](https://github.com/kubernetes/kubernetes/pull/40528), [@shashidharatd](https://github.com/shashidharatd))
* Added support to minimize sending verbose node information to scheduler extender by sending only node names and expecting extenders to cache the rest of the node information ([#41119](https://github.com/kubernetes/kubernetes/pull/41119), [@sarat-k](https://github.com/sarat-k))
* Guaranteed admission for Critical Pods ([#40952](https://github.com/kubernetes/kubernetes/pull/40952), [@dashpole](https://github.com/dashpole))
* Switch to the `node-role.kubernetes.io/master` label for marking and tainting the master node in kubeadm ([#41835](https://github.com/kubernetes/kubernetes/pull/41835), [@luxas](https://github.com/luxas))
* Allow drain --force to remove pods whose managing resource is deleted. ([#41864](https://github.com/kubernetes/kubernetes/pull/41864), [@marun](https://github.com/marun))
* add kubectl can-i to see if you can perform an action ([#41077](https://github.com/kubernetes/kubernetes/pull/41077), [@deads2k](https://github.com/deads2k))
* enable DefaultTolerationSeconds admission controller by default ([#41815](https://github.com/kubernetes/kubernetes/pull/41815), [@kevin-wangzefeng](https://github.com/kevin-wangzefeng))
* Make DaemonSets survive taint-based evictions when nodes turn unreachable/notReady. ([#41896](https://github.com/kubernetes/kubernetes/pull/41896), [@kevin-wangzefeng](https://github.com/kevin-wangzefeng))
* Add configurable limits to CronJob resource to specify how many successful and failed jobs are preserved. ([#40932](https://github.com/kubernetes/kubernetes/pull/40932), [@peay](https://github.com/peay))
* Deprecate outofdisk-transition-frequency and low-diskspace-threshold-mb flags ([#41941](https://github.com/kubernetes/kubernetes/pull/41941), [@dashpole](https://github.com/dashpole))
* Add OWNERS for sample-apiserver in staging ([#42094](https://github.com/kubernetes/kubernetes/pull/42094), [@sttts](https://github.com/sttts))
* Update gcr.io/google-containers/rescheduler to v0.2.2, which uses busybox as a base image instead of ubuntu. ([#41911](https://github.com/kubernetes/kubernetes/pull/41911), [@ixdy](https://github.com/ixdy))
* Add storage.k8s.io/v1 API ([#40088](https://github.com/kubernetes/kubernetes/pull/40088), [@jsafrane](https://github.com/jsafrane))
* Juju - K8s master charm now properly keeps distributed master files in sync for an HA control plane. ([#41351](https://github.com/kubernetes/kubernetes/pull/41351), [@chuckbutler](https://github.com/chuckbutler))
* kubelet config should ignore file start with dots ([#39196](https://github.com/kubernetes/kubernetes/pull/39196), [@resouer](https://github.com/resouer))
* Add an alpha feature that makes NodeController set Taints instead of deleting Pods from not Ready Nodes. ([#41133](https://github.com/kubernetes/kubernetes/pull/41133), [@gmarek](https://github.com/gmarek))
* Base etcd-empty-dir-cleanup on busybox, run as nobody, and update to etcdctl 3.0.14 ([#41674](https://github.com/kubernetes/kubernetes/pull/41674), [@ixdy](https://github.com/ixdy))
* Fix zone placement heuristics so that multiple mounts in a StatefulSet pod are created in the same zone ([#40910](https://github.com/kubernetes/kubernetes/pull/40910), [@justinsb](https://github.com/justinsb))
* Flag --use-kubernetes-version for kubeadm init renamed to --kubernetes-version ([#41820](https://github.com/kubernetes/kubernetes/pull/41820), [@kad](https://github.com/kad))
*`kube-dns` now runs using a separate `system:serviceaccount:kube-system:kube-dns` service account which is automatically bound to the correct RBAC permissions. ([#38816](https://github.com/kubernetes/kubernetes/pull/38816), [@deads2k](https://github.com/deads2k))
*[Kubemark] Fixed hollow-npd container command to log to file ([#41858](https://github.com/kubernetes/kubernetes/pull/41858), [@shyamjvs](https://github.com/shyamjvs))
* kubeadm: Remove the --cloud-provider flag for beta init UX ([#41710](https://github.com/kubernetes/kubernetes/pull/41710), [@luxas](https://github.com/luxas))
* The CertificateSigningRequest API added the `extra` field to persist all information about the requesting user. This mirrors the fields in the SubjectAccessReview API used to check authorization. ([#41755](https://github.com/kubernetes/kubernetes/pull/41755), [@liggitt](https://github.com/liggitt))
* Upgrade golang versions to 1.7.5 ([#41771](https://github.com/kubernetes/kubernetes/pull/41771), [@cblecker](https://github.com/cblecker))
* Added a new secret type "bootstrap.kubernetes.io/token" for dynamically creating TLS bootstrapping bearer tokens. ([#41281](https://github.com/kubernetes/kubernetes/pull/41281), [@ericchiang](https://github.com/ericchiang))
* Remove unnecessary metrics (http/process/go) from being exposed by etcd-version-monitor ([#41807](https://github.com/kubernetes/kubernetes/pull/41807), [@shyamjvs](https://github.com/shyamjvs))
* Support new kubectl apply view-last-applied command for viewing the last configuration file applied ([#41146](https://github.com/kubernetes/kubernetes/pull/41146), [@shiywang](https://github.com/shiywang))
* Bump GCI to gci-stable-56-9000-84-2 ([#41819](https://github.com/kubernetes/kubernetes/pull/41819), [@dchen1107](https://github.com/dchen1107))
* list-resources: don't fail if the grep fails to match any resources ([#41933](https://github.com/kubernetes/kubernetes/pull/41933), [@ixdy](https://github.com/ixdy))
* client-go no longer imports GCP OAuth2 and OpenID Connect packages by default. ([#41532](https://github.com/kubernetes/kubernetes/pull/41532), [@ericchiang](https://github.com/ericchiang))
* Each pod has its own associated cgroup by default. ([#41349](https://github.com/kubernetes/kubernetes/pull/41349), [@derekwaynecarr](https://github.com/derekwaynecarr))
* Whitelist kubemark in node_ssh_supported_providers for log dump ([#41800](https://github.com/kubernetes/kubernetes/pull/41800), [@shyamjvs](https://github.com/shyamjvs))
* Support KUBE_MAX_PD_VOLS on Azure ([#41398](https://github.com/kubernetes/kubernetes/pull/41398), [@codablock](https://github.com/codablock))
*`--output-version` is ignored for all commands except `kubectl convert`. This is consistent with the generic nature of `kubectl` CRUD commands and the previous removal of `--api-version`. Specific versions can be specified in the resource field: `resource.version.group`, `jobs.v1.batch`. ([#41576](https://github.com/kubernetes/kubernetes/pull/41576), [@deads2k](https://github.com/deads2k))
* Added bool type support for jsonpath. ([#39063](https://github.com/kubernetes/kubernetes/pull/39063), [@xingzhou](https://github.com/xingzhou))
* Nodes can now report two additional address types in their status: InternalDNS and ExternalDNS. The apiserver can use `--kubelet-preferred-address-types` to give priority to the type of address it uses to reach nodes. ([#34259](https://github.com/kubernetes/kubernetes/pull/34259), [@liggitt](https://github.com/liggitt))
* Clients now use the `?watch=true` parameter to make watch API calls, instead of the `/watch/` path prefix ([#41722](https://github.com/kubernetes/kubernetes/pull/41722), [@liggitt](https://github.com/liggitt))
* ResourceQuota ability to support default limited resources ([#36765](https://github.com/kubernetes/kubernetes/pull/36765), [@derekwaynecarr](https://github.com/derekwaynecarr))
* Fix kubemark default e2e test suite's name ([#41751](https://github.com/kubernetes/kubernetes/pull/41751), [@shyamjvs](https://github.com/shyamjvs))
* federation aws: add logging of route53 calls ([#39964](https://github.com/kubernetes/kubernetes/pull/39964), [@justinsb](https://github.com/justinsb))
* Fix ConfigMap for Windows Containers. ([#39373](https://github.com/kubernetes/kubernetes/pull/39373), [@jbhurat](https://github.com/jbhurat))
* Node Problem Detector is beta now. New features added: journald support, standalone mode and arbitrary system log monitoring. ([#40206](https://github.com/kubernetes/kubernetes/pull/40206), [@Random-Liu](https://github.com/Random-Liu))
* Fix the output of health-mointor.sh ([#41525](https://github.com/kubernetes/kubernetes/pull/41525), [@yujuhong](https://github.com/yujuhong))
* kubectl describe no longer prints the last-applied-configuration annotation for secrets. ([#34664](https://github.com/kubernetes/kubernetes/pull/34664), [@ymqytw](https://github.com/ymqytw))
* Report node not ready on failed PLEG health check ([#41569](https://github.com/kubernetes/kubernetes/pull/41569), [@yujuhong](https://github.com/yujuhong))
* Delay Deletion of a Pod until volumes are cleaned up ([#41456](https://github.com/kubernetes/kubernetes/pull/41456), [@dashpole](https://github.com/dashpole))
* Alpha version of dynamic volume provisioning is removed in this release. Annotation ([#40000](https://github.com/kubernetes/kubernetes/pull/40000), [@jsafrane](https://github.com/jsafrane))
* "volume.alpha.kubernetes.io/storage-class" does not have any special meaning. A default storage class
* and DefaultStorageClass admission plugin can be used to preserve similar behavior of Kubernetes cluster,
* see https://kubernetes.io/docs/user-guide/persistent-volumes/#class-1 for details.
* An `automountServiceAccountToken *bool` field was added to ServiceAccount and PodSpec objects. If set to `false` on a pod spec, no service account token is automounted in the pod. If set to `false` on a service account, no service account token is automounted for that service account unless explicitly overridden in the pod spec. ([#37953](https://github.com/kubernetes/kubernetes/pull/37953), [@liggitt](https://github.com/liggitt))
* Bump addon-manager version to v6.4-alpha.1 in kubemark ([#41506](https://github.com/kubernetes/kubernetes/pull/41506), [@shyamjvs](https://github.com/shyamjvs))
* Do not daemonize `salt-minion` for the openstack-heat provider. ([#40722](https://github.com/kubernetes/kubernetes/pull/40722), [@micmro](https://github.com/micmro))
* Move private key parsing from serviceaccount/jwt.go to client-go/util/cert ([#40907](https://github.com/kubernetes/kubernetes/pull/40907), [@cblecker](https://github.com/cblecker))
* Added configurable etcd initial-cluster-state to kube-up script. ([#41332](https://github.com/kubernetes/kubernetes/pull/41332), [@jszczepkowski](https://github.com/jszczepkowski))
