* CUSTOM_KUBE_DASHBOARD_BANNER environment variable will be used to populate notification banner in Kubernetes Dashboard add-on. ([#60639](https://github.com/kubernetes/kubernetes/pull/60639), [@konryd](https://github.com/konryd))

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrAdminConfigEnvOverridden: {
		Code:           "XMinioAdminConfigEnvOverridden",
		Description:    "Unable to update config via Admin API due to environment variable override",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrAdminConfigDuplicateKeys: {
		Code:           "XMinioAdminConfigDuplicateKeys",

- API servers using the default Google Compute Engine bootstrapping scripts will have their insecure port (`:8080`) disabled by default. To enable the insecure port, set `ENABLE_APISERVER_INSECURE_PORT=true` in kube-env or as an environment variable. ([#77447](https://github.com/kubernetes/kubernetes/pull/77447), [@dekkagaijin](https://github.com/dekkagaijin))

### External credential provider for client-go

The client-go credential plugins can now be passed in the current cluster information via the `KUBERNETES_EXEC_INFO` environment variable. Learn more about this on [client-go credential plugins documentation](https://docs.k8s.io/reference/access-authn-authz/authentication/#client-go-credential-plugins/).

### CronJob controller v2 is available through feature gate

This means that now, if you set a value in a context variable before `yield`, the value would still be available after `yield` (as you would intuitively expect). And it also means that you can reset the context variable with a token afterwards.

For example, this works correctly now:

```Python
from contextvars import ContextVar

crawler.crawling.data.encoding=UTF-8
# Supported web protocols for crawling.
crawler.web.protocols=http,https
# Supported file protocols for crawling.
crawler.file.protocols=file,smb,smb1,ftp,storage,s3,gcs
# Pattern for environment variable keys in crawling data.
crawler.data.env.param.key.pattern=^FESS_ENV_.*
# Whether to ignore robots.txt during crawling.
crawler.ignore.robots.txt=false
# Whether to ignore robots meta tags during crawling.

or `/etc/sysconfig/kubelet`, depending on the system you're running on.
([#64780](https://github.com/kubernetes/kubernetes/pull/64780), [@luxas](https://github.com/luxas))

* AWS volumes: Use /dev/xvdXX names with EC2 ([#27628](https://github.com/kubernetes/kubernetes/pull/27628), [@justinsb](https://github.com/justinsb))
* Add a test config variable to specify desired Docker version to run on GCI. ([#26813](https://github.com/kubernetes/kubernetes/pull/26813), [@wonderfly](https://github.com/wonderfly))

- KCM specific args can be passed with `/cluster` script, without affecting CCM. New variable name: `KUBE_CONTROLLER_MANAGER_TEST_ARGS`. ([#120524](https://github.com/kubernetes/kubernetes/pull/120524), [@jprzychodzen](https://github.com/jprzychodzen)) [SIG Cloud Provider]

- Kubeadm: now sets the host `OS` environment variables when executing `crictl` during image pulls. This fixed a bug where `*PROXY` environment variables did not affect `crictl` internet connectivity. ([#110134](https://github.com/kubernetes/kubernetes/pull/110134), [@mk46](https://github.com/mk46))