- Graduated relaxed DNS search string validation to GA. For the Pod API, `.spec.dnsConfig.searches`

    * `kubectl create secret` has a new option `--from-env-file` that populates a secret from file which follows a key=val format for each line.

  * Printing/describe

science

// scot : Dot Scot Registry Limited
// https://www.iana.org/domains/root/db/scot.html
scot

// search : Charleston Road Registry Inc.
// https://www.iana.org/domains/root/db/search.html
search

// seat : SEAT, S.A. (Sociedad Unipersonal)
// https://www.iana.org/domains/root/db/seat.html
seat

// secure : Amazon Registry Services, Inc.

* Revert [#63905](https://github.com/kubernetes/kubernetes/pull/63905): Setup dns servers and search domains for Windows Pods. DNS for Windows containers will be set by CNI plugins. ([#66587](https://github.com/kubernetes/kubernetes/pull/66587), [@feiskyer](https://github.com/feiskyer))

  termination message log file. The termination message file is now properly
  readable for end users and has a maximum size (4k bytes) to prevent abuse.
  Each pod may have up to 12k bytes of termination messages before the contents
  of each will be truncated.
* Do not delete pod objects until all its compute resource footprint has been
  reclaimed.

- Allow for Pod search domains to be a single dot `.` or contain an underscore `_` ([#127167](https://github.com/kubernetes/kubernetes/pull/127167), [@adrianmoisey](https://github.com/adrianmoisey)) [SIG Apps, Network and Testing]

- Promoted `RelaxedDNSSearchValidation` to beta, allowing for Pod search domains to be a single dot "." or contain an underscore "_". ([#130128](https://github.com/kubernetes/kubernetes/pull/130128), [@adrianmoisey](https://github.com/adrianmoisey)) [SIG Apps and Network]

* fix: azure disk detach failure if node not exists ([#82640](https://github.com/kubernetes/kubernetes/pull/82640), [@andyzhangx](https://github.com/andyzhangx))
* Fix the dns suffix search list for GCE window clusters. ([#82314](https://github.com/kubernetes/kubernetes/pull/82314), [@lzang](https://github.com/lzang))



# v1.15.4

[Documentation](https://docs.k8s.io)

- kubeadm: Control plane images (etcd, kube-apiserver, kube-proxy, etc.) no longer use arch suffixes. Arch suffixes are kept for kube-dns only. ([#66960](https://github.com/kubernetes/kubernetes/pull/66960),
[@rosti](https://github.com/rosti)) Courtesy of SIG Cluster Lifecycle, SIG Release, and SIG Testing

- Avoid propagating hosts' `search .` into containers' `/etc/resolv.conf` ([#112204](https://github.com/kubernetes/kubernetes/pull/112204), [@lucab](https://github.com/lucab)) [SIG Network and Node]