Etc/GMT+3 Etc/GMT+4 Etc/GMT+5 Etc/GMT+6 Etc/GMT+7 Etc/GMT+8 Etc/GMT+9 Etc/GMT-0 Etc/GMT-1 Etc/GMT-10 Etc/GMT-11 Etc/GMT-12 Etc/GMT-13 Etc/GMT-14 Etc/GMT-2 Etc/GMT-3 Etc/GMT-4 Etc/GMT-5 Etc/GMT-6 Etc/GMT-7 Etc/GMT-8 Etc/GMT-9 Etc/GMT0 Etc/Greenwich Etc/UCT Etc/UTC Etc/Universal Etc/Zulu Europe/Amsterdam Europe/Andorra Europe/Astrakhan Europe/Athens Europe/Belfast Europe/Belgrade Europe/Berlin Europe/Bratislava Europe/Brussels Europe/Bucharest Europe/Budapest Europe/Busingen Europe/Chisinau Europe/Copenhagen...

- Kubeadm: removed the restriction that the `ca.crt` can only contain one certificate. If there is more than one certificate in the `ca.crt` file, kubeadm will pick the first one by default. ([#107327](https://github.com/kubernetes/kubernetes/pull/107327), [@SataQiu](https://github.com/SataQiu))

	//
	// Required fields:
	// - Secret.Data["tls.key"] - TLS private key.
	//   Secret.Data["tls.crt"] - TLS certificate.
	// TODO: Consider supporting different formats, specifying CA/destinationCA.
	SecretTypeTLS SecretType = "kubernetes.io/tls"

	// TLSCertKey is the key for tls certificates in a TLS secret.
	TLSCertKey = "tls.crt"
	// TLSPrivateKeyKey is the key for the private key field in a TLS secret.

	//
	// Required fields:
	// - Secret.Data["tls.key"] - TLS private key.
	//   Secret.Data["tls.crt"] - TLS certificate.
	// TODO: Consider supporting different formats, specifying CA/destinationCA.
	SecretTypeTLS SecretType = "kubernetes.io/tls"

	// TLSCertKey is the key for tls certificates in a TLS secret.
	TLSCertKey = "tls.crt"
	// TLSPrivateKeyKey is the key for the private key field in a TLS secret.

### Introducing `RootCAConfigMap`

`RootCAConfigMap` graduates to Beta, separating from `BoundServiceAccountTokenVolume`. The `kube-root-ca.crt` ConfigMap is now available to every namespace, by default. It contains the Certificate Authority bundle for verify kube-apiserver connections.

### `kubectl debug` graduates to Beta

* The `--bootstrap-kubeconfig` argument to Kubelet previously created the first bootstrap client credentials in the certificates directory as `kubelet-client.key` and `kubelet-client.crt`.  Subsequent certificates created by cert rotation were created in a combined PEM file that was atomically rotated as `kubelet-client-DATE.pem` in that directory, which meant clients relying on the `node.kubeconfig` generated by bootstrapping would...

- Kubeadm: changed the "system:masters" Group in the apiserver-kubelet-client.crt certificate Subject to be "kubeadm:cluster-admins" which is a less privileged Group. ([#121837](https://github.com/kubernetes/kubernetes/pull/121837), [@neolit123](https://github.com/neolit123))

  </mime-type>

  <mime-type type="application/x-x509-cert">
    <alias type="application/x-x509-ca-cert"/>
    <alias type="application/x-x509-user-cert"/>
    <glob pattern="*.crt"/>
  </mime-type>
  <mime-type type="application/x-x509-cert;format=pem">
    <sub-class-of type="application/x-x509-cert"/>
    <glob pattern="*.pem"/>
    <magic priority="50">

p\xe4eva",M:Hs,MM:Hs,y:Hs,yy:Hs},dayOfMonthOrdinalParse:/\d{1,2}\./,ordinal:"%d.",week:{dow:1,doy:4}}),l.defineLocale("eu",{months:"urtarrila_otsaila_martxoa_apirila_maiatza_ekaina_uztaila_abuztua_iraila_urria_azaroa_abendua".split("_"),monthsShort:"urt._ots._mar._api._mai._eka._uzt._abu._ira._urr._aza._abe.".split("_"),monthsParseExact:!0,weekdays:"igandea_astelehena_asteartea_asteazkena_osteguna_ostirala_larunbata".split("_"),weekdaysShort:"ig._al._ar._az._og._ol._lr.".split("_"),weekdaysMin:"ig...

- E2e tests wait for kube-root-ca.crt to be populated in namespaces for use with projected service account tokens, reducing delays starting those test pods and errors in the logs. ([#108860](https://github.com/kubernetes/kubernetes/pull/108860), [@eddiezane](https://github.com/eddiezane))...