<no title>

# Changes in KubeSpawner

<!– PR link template: - [#](https://github.com/jupyterhub/kubespawner/pull/) ([@](https://github.com/)) –>

## [Unreleased]

## 2.0

### 2.0.0 - 2021-11-28

#### Breaking changes

A breaking change was introduced in [#545](https://github.com/jupyterhub/kubespawner/pull/545), making the default value of allow_privilege_escalation be False. This means a user can’t use sudo unless allow_privilege_escalation is explicitly set to True. The JupyterHub user Pod that KubeSpawner creates will have a container with a securityContext that has allowPrivilegeEscalation set to false by default.

For reference, the following can be read about allowPrivilegeEscalation in [Kubernetes official documentation](https://kubernetes.io/docs/tasks/configure-pod-container/security-context/):

> AllowPrivilegeEscalation: Controls whether a process can gain more privileges than its parent process. This bool directly controls whether the no_new_privs flag gets set on the container process. AllowPrivilegeEscalation is true always when the container is: 1) run as Privileged OR 2) has CAP_SYS_ADMIN.

To revert to the previous behavior of using the cluster’s default, set allow_privilege_escalation explicitly to None.

#### Bugs fixed

Default allow_privilege_escalation to False [#545](https://github.com/jupyterhub/kubespawner/pull/545) ([@yuvipanda](https://github.com/yuvipanda))
Ensure that the _start_future attribute exists. [#541](https://github.com/jupyterhub/kubespawner/pull/541) ([@athornton](https://github.com/athornton))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2021-11-03&to=2021-11-19&type=c))

[@athornton](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Aathornton+updated%3A2021-11-03..2021-11-19&type=Issues) | [@minrk](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Aminrk+updated%3A2021-11-03..2021-11-19&type=Issues) | [@mriedem](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Amriedem+updated%3A2021-11-03..2021-11-19&type=Issues) | [@welcome](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Awelcome+updated%3A2021-11-03..2021-11-19&type=Issues) | [@yuvipanda](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Ayuvipanda+updated%3A2021-11-03..2021-11-19&type=Issues)

## 1.1

### [1.1.2] - 2021-11-03

#### Bugs fixed

Fix race condition between spawn() calling _start() and progress() [#511](https://github.com/jupyterhub/kubespawner/pull/511) ([@consideRatio](https://github.com/consideRatio))

#### Maintenance and upkeep improvements

Rename master to main [#535](https://github.com/jupyterhub/kubespawner/pull/535) ([@consideRatio](https://github.com/consideRatio))
Remove .pylintrc config [#534](https://github.com/jupyterhub/kubespawner/pull/534) ([@consideRatio](https://github.com/consideRatio))
Warn about cli args being ignored when KubeSpawner.cmd is not set [#533](https://github.com/jupyterhub/kubespawner/pull/533) ([@minrk](https://github.com/minrk))

#### Other merged PRs

ci: misc fixes, don’t run tests on markdown changes, etc [#539](https://github.com/jupyterhub/kubespawner/pull/539) ([@consideRatio](https://github.com/consideRatio))
docs: require sphinx >=2 [#538](https://github.com/jupyterhub/kubespawner/pull/538) ([@consideRatio](https://github.com/consideRatio))
[pre-commit.ci] pre-commit autoupdate [#537](https://github.com/jupyterhub/kubespawner/pull/537) ([@pre-commit-ci](https://github.com/pre-commit-ci))
Update our docs config [#536](https://github.com/jupyterhub/kubespawner/pull/536) ([@consideRatio](https://github.com/consideRatio))
[pre-commit.ci] pre-commit autoupdate [#530](https://github.com/jupyterhub/kubespawner/pull/530) ([@pre-commit-ci](https://github.com/pre-commit-ci))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2021-10-04&to=2021-11-03&type=c))

[@athornton](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Aathornton+updated%3A2021-10-04..2021-11-03&type=Issues) | [@consideRatio](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3AconsideRatio+updated%3A2021-10-04..2021-11-03&type=Issues) | [@manics](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Amanics+updated%3A2021-10-04..2021-11-03&type=Issues) | [@minrk](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Aminrk+updated%3A2021-10-04..2021-11-03&type=Issues) | [@pre-commit-ci](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Apre-commit-ci+updated%3A2021-10-04..2021-11-03&type=Issues) | [@yuvipanda](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Ayuvipanda+updated%3A2021-10-04..2021-11-03&type=Issues)

### [1.1.1] - 2021-10-04

#### Bugs fixed

Terminate process correctly from reflector thread [#525](https://github.com/jupyterhub/kubespawner/pull/525) ([@yuvipanda](https://github.com/yuvipanda))

#### Continuous integration

[pre-commit.ci] pre-commit autoupdate [#526](https://github.com/jupyterhub/kubespawner/pull/526) ([@pre-commit-ci](https://github.com/pre-commit-ci))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2021-07-21&to=2021-10-04&type=c))

[@consideRatio](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3AconsideRatio+updated%3A2021-07-21..2021-10-04&type=Issues) | [@yuvipanda](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Ayuvipanda+updated%3A2021-07-21..2021-10-04&type=Issues)

### [1.1.0] - 2021-07-21

#### Enhancements made

Expand username etc. in configured service_account [#518](https://github.com/jupyterhub/kubespawner/pull/518) ([@consideRatio](https://github.com/consideRatio))
Sort env to reliably expand nested env references [#510](https://github.com/jupyterhub/kubespawner/pull/510) ([@consideRatio](https://github.com/consideRatio))

#### Bugs fixed

Ensure to omit empty lists in security contexts [#517](https://github.com/jupyterhub/kubespawner/pull/517) ([@consideRatio](https://github.com/consideRatio))

#### Maintenance and upkeep improvements

Generalize omit_namespace functionality [#514](https://github.com/jupyterhub/kubespawner/pull/514) ([@droctothorpe](https://github.com/droctothorpe))
Remove unneeded dep [#508](https://github.com/jupyterhub/kubespawner/pull/508) ([@dhirschfeld](https://github.com/dhirschfeld))

#### Documentation improvements

Fix the errors followed by the contributing steps [#509](https://github.com/jupyterhub/kubespawner/pull/509) ([@mggger](https://github.com/mggger))

#### Other merged PRs

[KubeIngressProxy] Set configuration before instantiating reflectors [#515](https://github.com/jupyterhub/kubespawner/pull/515) ([@droctothorpe](https://github.com/droctothorpe))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2021-05-14&to=2021-07-21&type=c))

[@consideRatio](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3AconsideRatio+updated%3A2021-05-14..2021-07-18&type=Issues) | [@dhirschfeld](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Adhirschfeld+updated%3A2021-05-14..2021-07-18&type=Issues) | [@droctothorpe](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Adroctothorpe+updated%3A2021-05-14..2021-07-18&type=Issues) | [@mggger](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Amggger+updated%3A2021-05-14..2021-07-18&type=Issues) | [@yuvipanda](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Ayuvipanda+updated%3A2021-05-14..2021-07-18&type=Issues)

## 1.0

### [1.0.0] - 2021-05-14

This release is the continuation of version 0.16.1 and could have been 0.17.0 in practice. We opted to release 1.0.0 as it enables us to communicate changes according to [SemVer](https://semver.org/). Using SemVer versioning, a change in each of the three version numbers (major.minor.patch) represents a different kind of change.

#### Breaking changes

When using KubeSpawner 1.0.0 or later together with JupyterHub 1.4.1 or later, deleting a JupyterHub user or deleting (not just stopping) a named server will lead to removing the associated PVC resource. To opt out of this behavior set the delete_pvc configuration to False.

#### New features added

Allow configuration of kubernetes client’s options: ssl_ca_cert, host [#494](https://github.com/jupyterhub/kubespawner/pull/494) ([@kafonek](https://github.com/kafonek))
add method to delete namespaced PVC in spawner base class [#475](https://github.com/jupyterhub/kubespawner/pull/475) ([@nsshah1288](https://github.com/nsshah1288))

#### Enhancements made

Add options_from_form as configurable [#477](https://github.com/jupyterhub/kubespawner/pull/477) ([@cbanek](https://github.com/cbanek))

#### Maintenance and upkeep improvements

Add MANIFEST.in (LICENCE, README.md) [#495](https://github.com/jupyterhub/kubespawner/pull/495) ([@dhirschfeld](https://github.com/dhirschfeld))

#### Documentation improvements

Rewrite help for Kubespawner.cmd [#502](https://github.com/jupyterhub/kubespawner/pull/502) ([@manics](https://github.com/manics))

#### Continuous integration

ci: test against recent k8s versions and misc workflow updates [#506](https://github.com/jupyterhub/kubespawner/pull/506) ([@consideRatio](https://github.com/consideRatio))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2021-03-01&to=2021-05-13&type=c))

## 0.16

### [0.16.1] - 2021-03-01

#### Bugs fixed

fix url-change detection in poll [#489](https://github.com/jupyterhub/kubespawner/pull/489) ([@minrk](https://github.com/minrk))

#### Contributors to this release

[@minrk](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Aminrk+updated%3A2021-02-26..2021-03-01&type=Issues)

### [0.16.0] - 2021-02-26

#### Enhancements made

Add pod_security_context and container_security_context config [#480](https://github.com/jupyterhub/kubespawner/pull/480) ([@cyrilcros](https://github.com/cyrilcros))
Allow mounting of service account token to be configurable (automount_service_account_token) [#476](https://github.com/jupyterhub/kubespawner/pull/476) ([@dtaniwaki](https://github.com/dtaniwaki))
Add user namespace support [#458](https://github.com/jupyterhub/kubespawner/pull/458) ([@athornton](https://github.com/athornton))
Support internal_ssl [#409](https://github.com/jupyterhub/kubespawner/pull/409) ([@minrk](https://github.com/minrk))

#### Bugs fixed

Fix failure to create a PVC being logged as failure to create a Pod [#481](https://github.com/jupyterhub/kubespawner/pull/481) ([@mriedem](https://github.com/mriedem))
handle pod url changes in poll [#408](https://github.com/jupyterhub/kubespawner/pull/408) ([@minrk](https://github.com/minrk))

#### Maintenance and upkeep improvements

Refactor: remove a third way to name the same thing in make_pod’s parameters [#483](https://github.com/jupyterhub/kubespawner/pull/483) ([@consideRatio](https://github.com/consideRatio))
pre-commit: use prettier as autoformatter (markdown, yaml) [#482](https://github.com/jupyterhub/kubespawner/pull/482) ([@consideRatio](https://github.com/consideRatio))
fix some spurious additions in tests [#474](https://github.com/jupyterhub/kubespawner/pull/474) ([@minrk](https://github.com/minrk))
adopt black (via pre-commit) for code formatting [#473](https://github.com/jupyterhub/kubespawner/pull/473) ([@minrk](https://github.com/minrk))
remove duplicated secret_mount_path definition [#472](https://github.com/jupyterhub/kubespawner/pull/472) ([@minrk](https://github.com/minrk))

#### Other merged PRs

[KubeIngressProxy] Fixes following changes to k8s resource reflectors [#484](https://github.com/jupyterhub/kubespawner/pull/484) ([@remche](https://github.com/remche))
[KubeIngressProxy] allow singleuser pods to use IPv6 addresses [#403](https://github.com/jupyterhub/kubespawner/pull/403) ([@stv0g](https://github.com/stv0g))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2020-12-15&to=2021-02-26&type=c))

## 0.15

### [0.15.0] - 2020-10-15

#### Enhancements made

Expand storage selector [#463](https://github.com/jupyterhub/kubespawner/pull/463) ([@dtaniwaki](https://github.com/dtaniwaki))
Add pod_connect_ip config regarding how kubespawner reach the pod [#460](https://github.com/jupyterhub/kubespawner/pull/460) ([@dtaniwaki](https://github.com/dtaniwaki))
[Feature] Add AllowPrivilegeEscalation to container’s securityContext [#450](https://github.com/jupyterhub/kubespawner/pull/450) ([@captnbp](https://github.com/captnbp))

#### Bugs fixed

Wrap concurrent.futures Future in polling function [#467](https://github.com/jupyterhub/kubespawner/pull/467) ([@ondave](https://github.com/ondave))
Let uid/gid/fs_gid default to None instead of 0 [#453](https://github.com/jupyterhub/kubespawner/pull/453) ([@consideRatio](https://github.com/consideRatio))

#### Maintenance and upkeep improvements

action-k3s-helm was moved to jupyterhub [#465](https://github.com/jupyterhub/kubespawner/pull/465) ([@manics](https://github.com/manics))
Don’t run tests on unsupported k8s client versions [#464](https://github.com/jupyterhub/kubespawner/pull/464) ([@yuvipanda](https://github.com/yuvipanda))
Migrate from travis to GitHub actions [#459](https://github.com/jupyterhub/kubespawner/pull/459) ([@consideRatio](https://github.com/consideRatio))
Cleanup JS patch of JupyterHub 0.8 HTML not needed in 0.9+ [#455](https://github.com/jupyterhub/kubespawner/pull/455) ([@consideRatio](https://github.com/consideRatio))

#### Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2020-10-23&to=2020-12-15&type=c))

## [0.14]

### [0.14.1] - 2020-10-23

#### Bugs fixed

KubeSpawner.image_pull_secrets malfunctions in 0.14.0 - this fixes it [#451](https://github.com/jupyterhub/kubespawner/pull/451) ([@johnhoman](https://github.com/johnhoman))

#### Maintenance and upkeep improvements

CI: bump to kubernetes client v12, and test k8s 1.19 also [#449](https://github.com/jupyterhub/kubespawner/pull/449) ([@consideRatio](https://github.com/consideRatio))

## Contributors to this release

([GitHub contributors page for this release](https://github.com/jupyterhub/kubespawner/graphs/contributors?from=2020-10-05&to=2020-10-23&type=c))

[@consideRatio](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3AconsideRatio+updated%3A2020-10-05..2020-10-23&type=Issues) | [@johnhoman](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Ajohnhoman+updated%3A2020-10-05..2020-10-23&type=Issues) | [@rkdarst](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Arkdarst+updated%3A2020-10-05..2020-10-23&type=Issues) | [@welcome](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Awelcome+updated%3A2020-10-05..2020-10-23&type=Issues) | [@yuvipanda](https://github.com/search?q=repo%3Ajupyterhub%2Fkubespawner+involves%3Ayuvipanda+updated%3A2020-10-05..2020-10-23&type=Issues)

### [0.14.0] - 2020-10-05

#### Enhancements made

Allow image_pull_secrets config to be specified the k8s native way [#442](https://github.com/jupyterhub/kubespawner/pull/442) ([@consideRatio](https://github.com/consideRatio))

#### Bugs fixed

Access containerStatuses key with get() [#441](https://github.com/jupyterhub/kubespawner/pull/441) ([@rmoe](https://github.com/rmoe))
Allow pod to spawn if the PVC specified already exists [#438](https://github.com/jupyterhub/kubespawner/pull/438) ([@gravenimage](https://github.com/gravenimage))
Add timeout and retry to create_namespaced_pod [#433](https://github.com/jupyterhub/kubespawner/pull/433) ([@gravenimage](https://github.com/gravenimage))
Fix KubeIngressProxy.get_all_routes for 0.13 [#430](https://github.com/jupyterhub/kubespawner/pull/430) ([@remche](https://github.com/remche))

#### Maintenance and upkeep improvements

Manage regexp syntax deprecation [#445](https://github.com/jupyterhub/kubespawner/pull/445) ([@consideRatio](https://github.com/consideRatio))
Python 3.6+ migration: async in 3.5 and async with yeild in 3.6 [#444](https://github.com/jupyterhub/kubespawner/pull/444) ([@consideRatio](https://github.com/consideRatio))
Add an explicit dependency on urllib3 [#437](https://github.com/jupyterhub/kubespawner/pull/437) ([@yuvipanda](https://github.com/yuvipanda))
Delete remnant now unused parts in spawner.py [#382](https://github.com/jupyterhub/kubespawner/pull/382) ([@bitnik](https://github.com/bitnik))

## 0.13

### [0.13.0] - 2020-09-20

Noteworthy for this release are: performance improvements, Kubernetes native environment variable specification, the possibility to run multiple JupyterHub’s in the same namespace.

#### Breaking changes

The following changes probably won’t break typical usage of KubeSpawner, but could for example break logic to customized the progress page JupyerHub displays while spawning a Kubernetes pod for the user.

The Kubernetes EventsReflector, which is providing the KubeSpawner instances with information about [Kubernetes Events](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.19/#event-v1-core) describing events for other resources, is now exposing events as python dictionaries rather than V1Event objects. V1Event is defined in the [kubernetes-client/python](https://github.com/jupyterhub/kubespawner) library as a representation of a Kubernetes Event.
KubeSpawner’s .progress method implementation (https://github.com/jupyterhub/jupyterhub/pull/1771) which is generating a formatted message as well as a KubeSpawner specific raw_event entry now returns the raw_event as a Python dictionary with entries formatted in camelCase where the keys were formatted in snake_case.

#### New

Support EnvVar’s with ‘valueFrom’ as well as with ‘value’ [#426](https://github.com/jupyterhub/kubespawner/pull/426) ([@consideRatio](https://github.com/consideRatio))
Breaking change / performance: don’t make kubernetes-client deserialize k8s events into objects [#424](https://github.com/jupyterhub/kubespawner/pull/424) ([@rmoe](https://github.com/rmoe))
Add component_label property to support multiple hub instances in the… [#418](https://github.com/jupyterhub/kubespawner/pull/418) ([@harsimranmaan](https://github.com/harsimranmaan))

#### Fixes

Breaking change / performance: don’t make kubernetes-client deserialize k8s events into objects [#424](https://github.com/jupyterhub/kubespawner/pull/424) ([@rmoe](https://github.com/rmoe))

#### Maintenance

Log thread pool worker count on init [#420](https://github.com/jupyterhub/kubespawner/pull/420) ([@mriedem](https://github.com/mriedem))
CI: test k8s 1.18 and require success, publish without test, bump minikube [#417](https://github.com/jupyterhub/kubespawner/pull/417) ([@consideRatio](https://github.com/consideRatio))

## Contributors to this release

This list of contributors were generated by [github-activity](https://github.com/executablebooks/github-activity) according to [these criteria](https://github-activity.readthedocs.io/en/latest/#how-does-this-tool-define-contributions-in-the-reports).

## 0.12

### [0.12.0] - 2020-07-17

#### Security

Security fix: CVE-2020-15110 / GHSA-v7m9-9497-p9gr. When named-servers are enabled, certain username patterns, depending on authenticator, could allow collisions. The default named-server template is changed to prevent collisions, meaning that upgrading will lose associations of named-servers with their PVCs if the default templates are used. Data should not be lost (old PVCs will be ignored, not deleted), but will need manual migration to new PVCs prior to deletion of old PVCs.

#### New features

Add slugs field for selecting profiles in API, instead of indices. [#401](https://github.com/jupyterhub/kubespawner/pull/401) ([@stv0g](https://github.com/stv0g))
Expose __version__ in kubespawner module [#383](https://github.com/jupyterhub/kubespawner/pull/383) ([@consideRatio](https://github.com/consideRatio))
log a warning if unrecognized user_options are provided [#389](https://github.com/jupyterhub/kubespawner/pull/389) ([@minrk](https://github.com/minrk))

#### Fixes

Fix ingress compatibility with kubernetes >= 0.10. kubernetes >= 0.10 is now required. [#402](https://github.com/jupyterhub/kubespawner/pull/402) ([@BertR](https://github.com/BertR))
Fix progress serialization [#381](https://github.com/jupyterhub/kubespawner/pull/381) ([@consideRatio](https://github.com/consideRatio))
Typos in storage capacity [#384](https://github.com/jupyterhub/kubespawner/pull/384) ([@TkTech](https://github.com/TkTech))
Typos in profile_list help [#411](https://github.com/jupyterhub/kubespawner/pull/411) ([@mriedem](https://github.com/mriedem))

#### Maintenance

Fix CI builds [#394](https://github.com/jupyterhub/kubespawner/pull/394) ([@consideRatio](https://github.com/consideRatio))
use bump2version and add release documentation [#376](https://github.com/jupyterhub/kubespawner/pull/376) ([@consideRatio](https://github.com/consideRatio))
improve development documentation [#377](https://github.com/jupyterhub/kubespawner/pull/377) ([@consideRatio](https://github.com/consideRatio))
test with JupyterHub master [#380](https://github.com/jupyterhub/kubespawner/pull/380) ([@consideRatio](https://github.com/consideRatio))
update contributing guide [#391](https://github.com/jupyterhub/kubespawner/pull/391) ([@betatim](https://github.com/betatim))

## 0.11

### [0.11.1] - 2019-11-29

0.11.1 consists of a small bugfix that made the progress reporting break.

#### Fixes

Fix spawn progress events now showing up due to failure to serialize [#381](https://github.com/jupyterhub/kubespawner/pull/381) ([@consideRatio](https://github.com/consideRatio))

#### Maintenance

Don’t require deploy job to also run tests [#379](https://github.com/jupyterhub/kubespawner/pull/379) ([@consideRatio](https://github.com/consideRatio))

### [0.11.0] - 2019-11-28

0.11.0 features minor feature additions, compatebility measures, and fixes. KubeSpawner now require Python 3.5 and is no longer actively tested against Kubernetes clusters versioned 1.10 as before, but is now being tested against version 1.12-1.16 with the [python kubernetes client library](https://github.com/kubernetes-client/python) version 8-11 that is compatible with k8s 1.11-1.15.

#### New

Add KubeSpawner.storage_selector for matching persistent volume using storage selector. [#338](https://github.com/jupyterhub/kubespawner/pull/338) ([@GrahamDumpleton](https://github.com/GrahamDumpleton))
Provide raw_event in spawner progress [#361](https://github.com/jupyterhub/kubespawner/pull/361) ([@clkao](https://github.com/clkao))
Add {username} expansion to extra_pod_config [#321](https://github.com/jupyterhub/kubespawner/pull/321) ([@cgiraldo](https://github.com/cgiraldo))
Configurable delete_grace_period [#310](https://github.com/jupyterhub/kubespawner/pull/310) ([@arturozv](https://github.com/arturozv))

#### Fixes

Scope security context to container from pod where it is possible [#334](https://github.com/jupyterhub/kubespawner/pull/334) ([@shoelsch](https://github.com/shoelsch))
Permit storage class to be empty string. [#337](https://github.com/jupyterhub/kubespawner/pull/337) ([@GrahamDumpleton](https://github.com/GrahamDumpleton))
Fix pod name prefix escaping for named servers [#309](https://github.com/jupyterhub/kubespawner/pull/309) ([@dmarth](https://github.com/dmarth))
Always load user_options [#301](https://github.com/jupyterhub/kubespawner/pull/301) ([@minrk](https://github.com/minrk))
using user_options in kubespawner [#285](https://github.com/jupyterhub/kubespawner/pull/285) ([@hhuuggoo](https://github.com/hhuuggoo))
Allow None on UID and GID [#286](https://github.com/jupyterhub/kubespawner/pull/286) ([@dtaniwaki](https://github.com/dtaniwaki))

#### Compatibility

CI reworked, support modern k8s high resolution timestamps, event monitoring is made more reliable, kubernetes=>8 required, python>=3.6 required, inline docs added [#368](https://github.com/jupyterhub/kubespawner/pull/368) ([@consideRatio](https://github.com/consideRatio))
Fix for Kubernetes 1.16 regarding datetime comparison [#362](https://github.com/jupyterhub/kubespawner/pull/362) ([@consideRatio](https://github.com/consideRatio))
More idiomatic python syntax [#356](https://github.com/jupyterhub/kubespawner/pull/356) ([@AnotherCodeArtist](https://github.com/AnotherCodeArtist))
Compatibility with kubernetes, jupyterhub prereleases [#314](https://github.com/jupyterhub/kubespawner/pull/314) ([@minrk](https://github.com/minrk))
compatibility with kubernetes 9.0 [#294](https://github.com/jupyterhub/kubespawner/pull/294) ([@minrk](https://github.com/minrk))
Pin kubernetes version to 8.0 [#292](https://github.com/jupyterhub/kubespawner/pull/292) ([@yuvipanda](https://github.com/yuvipanda))

#### Maintenance

Iteration of local development instructions [#377](https://github.com/jupyterhub/kubespawner/pull/377) ([@consideRatio](https://github.com/consideRatio))
Add RELEASE.md and utilize bump2version [#376](https://github.com/jupyterhub/kubespawner/pull/376) ([@consideRatio](https://github.com/consideRatio))
Fix docs build [#371](https://github.com/jupyterhub/kubespawner/pull/371) ([@consideRatio](https://github.com/consideRatio))
[MRG]: Travis pypi: only use pre for nightly [#369](https://github.com/jupyterhub/kubespawner/pull/369) ([@manics](https://github.com/manics))
Add relevant badges to README.md [#365](https://github.com/jupyterhub/kubespawner/pull/365) ([@consideRatio](https://github.com/consideRatio))
Update SETUP.md instructions to match current state of JupyterHub [#353](https://github.com/jupyterhub/kubespawner/pull/353) ([@yuvipanda](https://github.com/yuvipanda))
codecov badge [#312](https://github.com/jupyterhub/kubespawner/pull/312) ([@choldgraf](https://github.com/choldgraf))
Update documentation regarding run_as_gid behavior [#297](https://github.com/jupyterhub/kubespawner/pull/297) ([@kevin-bates](https://github.com/kevin-bates))
build docs with python 3.6 [#295](https://github.com/jupyterhub/kubespawner/pull/295) ([@minrk](https://github.com/minrk))
making kubespawner docs links more discoverable [#287](https://github.com/jupyterhub/kubespawner/pull/287) ([@choldgraf](https://github.com/choldgraf))

## 0.10

### [0.10.1] - 2018-12-11

0.10.1 is a tiny bugfix release, fixing regressions in 0.10.0.

Fix deprecation of KubeSpawner.hub_connect_ip, which caused errors in 0.10 when the deprecated config was used.

### [0.10.0] - 2018-12-05

0.10.0 is a small release, with minor changes and fixes.

Deprecate KubeSpawner.image_spec configuration in favor of standard KubeSpawner.image. image_spec continues to work with deprecation warnings
Stop pinning an exact kubernetes client version; instead, require kubernetes client >= 7. If desired, pinning should be done in images/installations
Expand username template variables in extra_containers
Set pod restart policy to OnFailure, so that notebook servers that terminate themselves cleanly do not restart automatically
Formally deprecate KubeSpawner.hub_connect_ip and KubeSpawner.hub_connect_ip in favor of JupyterHub.hub_connect_ip, available in jupyterhub >= 0.8

## 0.9

### [0.9.0] - 2018-09-03

KubeSpawner 0.9.0 is a big release of KubeSpawner.

Change highlights:

Require Kubernetes >= 1.6
Require JupyterHub >= 0.8
Require Python >= 3.5
Expose lots more Kubernetes options
Support configuration profiles via KubeSpawner.profile_list
Support Kubernetes events for the progress API in JupyterHub 0.9.
Update Kubernetes Python client to 6.0 (supporting Kubernetes 1.10 APIs)
Numerous bugfixes