- [alpha] Simplifies bootstrapping of TLS secured communication between the API server and kubelet. ([docs](http://kubernetes.io/docs/admin/master-node-communication/#kubelet-tls-bootstrap)) ([kubernetes/features#43](https://github.com/kubernetes/enhancements/issues/43))

   * rudimentary identification or indexing into a collection of real {@link InetAddress}es. They
   * cannot be used as real addresses for the purposes of network communication.
   *
   * @param ip {@link InetAddress} to convert
   * @return {@code int}, "coerced" if ip is not an IPv4 address
   * @since 7.0
   */
  public static int coerceToInteger(InetAddress ip) {

agent) that runs one, and only one, pod per node.
     * TLS and L7 support (Ingress API (Beta) in the Extensions API group): Kubernetes
is now easier to integrate into custom networking environments by supporting
TLS for secure communication and L7 http-based traffic routing.
     * Graceful Node Shutdown (aka drain) - The new “kubectl drain” command gracefully
evicts pods from nodes in preparation for disruptive operations like kernel
upgrades or maintenance.

frl

// frogans : OP3FT
// https://www.iana.org/domains/root/db/frogans.html
frogans

// frontier : Frontier Communications Corporation
// https://www.iana.org/domains/root/db/frontier.html
frontier

// ftr : Frontier Communications Corporation
// https://www.iana.org/domains/root/db/ftr.html
ftr

// fujitsu : Fujitsu Limited

- Kubeadm: Added the `HTTPEndpoints` field to `ClusterConfiguration.Etcd.ExternalEtcd` to configure HTTP endpoints for etcd communication in v1beta4. This separates HTTP traffic (e.g., `/metrics`, `/health`) from gRPC traffic, improving access control. Mirrors etcd’s `--listen-client-http-urls` behavior; if not set, the `Endpoints` field handles both traffic types. ([#134890](ht...

    assertFailsWith<UnknownServiceException> {
      client.newCall(request).execute()
    }.also { expected ->
      assertThat(expected.message).isEqualTo(
        "CLEARTEXT communication not enabled for client",
      )
    }
  }

  @Test
  fun httpsCallsFailWhenProtocolIsH2PriorKnowledge() {
    client =
      client
        .newBuilder()

### **Cluster Lifecycle**

*   kube-apiserver: `--ssh-user` and `--ssh-keyfile` are now deprecated and will be removed in a future release. Users of SSH tunnel functionality in Google Container Engine for the Master -> Cluster communication should plan alternate methods for bridging master and node networks. ([#54433](https://github.com/kubernetes/kubernetes/pull/54433),[ @dims](https://github.com/dims))

- When initializing nodes using external cloud-providers, the process now waits for the providerID value to be available before declaring the node ready. This ensures that nodes are not marked as Ready prematurely due to communication errors with the cloud-provider. The providerID and zone labels are necessary for integrations such as load balancers to function correctly. Users can choose to opt out of this behavior by setting the feature flag OptionalProviderID in the clou...

- Resolves bottleneck in internal API server communication that can cause increased goroutines and degrade API Server performance ([#80465](https://github.com/kubernetes/kubernetes/pull/80465), [@answer1991](https://github.com/answer1991))

* Update to go 1.12.10 ([#83139](https://github.com/kubernetes/kubernetes/pull/83139), [@cblecker](https://github.com/cblecker))
* Resolves bottleneck in internal API server communication that can cause increased goroutines and degrade API Server performance ([#80465](https://github.com/kubernetes/kubernetes/pull/80465), [@answer1991](https://github.com/answer1991))