- [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-13)
    - [Deprecation](#deprecation)
    - [API Change](#api-change-3)
    - [Feature](#feature-11)
    - [Documentation](#documentation)

    - [Node binaries](#node-binaries-12)
  - [Changelog since v1.18.5](#changelog-since-v1185)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-13)
    - [API Change](#api-change-2)
    - [Bug or Regression](#bug-or-regression-12)
  - [Dependencies](#dependencies-14)

    - [Windows](#windows)
    - [OpenStack](#openstack)
    - [API-machinery](#api-machinery)
    - [Auth](#auth)
    - [Azure](#azure)
    - [CLI](#cli)
    - [Network](#network)
  - [Before Upgrading](#before-upgrading)
  - [Known Issues](#known-issues)
  - [Deprecations](#deprecations)
  - [Other Notable Changes](#other-notable-changes-13)
    - [Apps](#apps)
    - [AWS](#aws)
    - [Auth](#auth-1)

  - [1.14 What’s New](#114-whats-new)
  - [Known Issues](#known-issues-1)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Deprecations](#deprecations)
  - [Removed and deprecated metrics](#removed-and-deprecated-metrics)
    - [Removed metrics](#removed-metrics)

    - [Container Images](#container-images-10)
  - [Changelog since v1.28.0](#changelog-since-v1280)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-10)
    - [Deprecation](#deprecation)
    - [API Change](#api-change-3)
    - [Feature](#feature-8)
    - [Documentation](#documentation)

    - [Container Images](#container-images-2)
  - [Changelog since v1.30.0](#changelog-since-v1300)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-2)
    - [Deprecation](#deprecation-1)
    - [API Change](#api-change-1)
    - [Feature](#feature-2)
    - [Failing Test](#failing-test)

# Kubernetes 1.11 Release Notes

## Urgent Upgrade Notes
### (No, really, you MUST do this before you upgrade)

Before upgrading to Kubernetes 1.11, you must keep the following in mind:

  optional LifecycleHandler postStart = 1;

  // PreStop is called immediately before a container is terminated due to an
  // API request or management event such as liveness/startup probe failure,
  // preemption, resource contention, etc. The handler is not called if the
  // container crashes or exits. The Pod's termination grace period countdown begins before the
  // PreStop hook is executed. Regardless of the outcome of the handler, the

    - [Etcd v3.5.[0-2] data corruption](#etcd-v350-2-data-corruption)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes)
    - [(No, really, you MUST read this before you upgrade)](#no-really-you-must-read-this-before-you-upgrade)
  - [Changes by Kind](#changes-by-kind-16)
    - [Deprecation](#deprecation)
    - [API Change](#api-change-2)
    - [Feature](#feature-9)
    - [Documentation](#documentation)

the result parameters before they are returned.
If the deferred function has any return values, they are discarded when
the function completes.
(See also the section on <a href="#Handling_panics">handling panics</a>.)
</p>

<pre>
lock(l)
defer unlock(l)  // unlocking happens before surrounding function returns

// prints 3 2 1 0 before surrounding function returns