* The OpenID Connect authenticator can now use a custom prefix, or omit the default prefix, for username and groups claims through the --oidc-username-prefix and --oidc-groups-prefix flags. For example, the authenticator can map a user with the username "jane" to "google:jane" by supplying the "google:" username prefix. ([#50875](https://github.com/kubernetes/kubernetes/pull/50875),...

import java.io.IOException
import okhttp3.Authenticator
import okhttp3.Credentials
import okhttp3.OkHttpClient
import okhttp3.Request
import okhttp3.Response
import okhttp3.Route

class Authenticate {
  private val client =
    OkHttpClient
      .Builder()
      .authenticator(
        object : Authenticator {
          @Throws(IOException::class)
          override fun authenticate(
            route: Route?,

import okhttp3.Request;
import okhttp3.Response;

public final class Authenticate {
  private final OkHttpClient client;

  public Authenticate() {
    client = new OkHttpClient.Builder()
        .authenticator((route, response) -> {
          if (response.request().header("Authorization") != null) {
            return null; // Give up, we've already attempted to authenticate.
          }

- Fix a bug in cronjob controller...

- Promoted the feature gate `HonorPVReclaimPolicy` to GA. ([#129583](https://github.com/kubernetes/kubernetes/pull/129583), [@carlory](https://github.com/carlory)) [SIG Apps, Storage and Testing]

- Fix 1.28.0 regression...

## Changes to API Resources
### ABAC
* ABAC policies using `"user":"*"` or `"group":"*"` to match all users or groups will only match authenticated requests. To match unauthenticated requests, ABAC policies must explicitly specify `"group":"system:unauthenticated"` ([#38968](https://github.com/kubernetes/kubernetes/pull/38968), [@liggitt](https://github.com/liggitt))

### Admission Control

            context = SingletonContext.getInstance().withCredentials(auth);
        } catch (Exception e) {
            log.warn("Failed to create authenticated context, trying guest access", e);
            context = SingletonContext.getInstance();
        }

        // Wait for server to be ready - with proper error handling for CI environments
        try {

- Fix a bug in cronjob controller...

        .protocol(HTTP_2)
        .message("Unauthorized")
        .build()
    val authRequest = authenticator.authenticate(route, response)

    assertEquals(
      "Basic ${RecordingAuthenticator.BASE_64_CREDENTIALS}",
      authRequest!!.header("Authorization"),
    )
  }

  @Test
  fun noSupportForNonBasicAuth() {
    val request =
      Request
        .Builder()