bootstrap "github.com/envoyproxy/go-control-plane/envoy/config/bootstrap/v3"
	cluster "github.com/envoyproxy/go-control-plane/envoy/config/cluster/v3"
	core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	listener "github.com/envoyproxy/go-control-plane/envoy/config/listener/v3"
	route "github.com/envoyproxy/go-control-plane/envoy/config/route/v3"

// joining an additional control plane instance and if the node is ready to preflight
func checkIfReadyForAdditionalControlPlane(initConfiguration *kubeadmapi.ClusterConfiguration, hasCertificateKey bool) error {
	// blocks if the cluster was created without a stable control plane endpoint
	if initConfiguration.ControlPlaneEndpoint == "" {

        mavenRepo.with {
            module('planet', 'earth', '3.0.0')
                .dependsOn('planet', 'venus', '2.0.0')
                .publish()
            module('planet', 'jupiter', '5.0.0')
                .dependsOn('planet', 'mercury', '1.0.2')
                .dependsOn('planet', 'venus', '1.0')
                .publish()
            module('planet', 'mars', '4.0.0')

	// KubernetesVersion is the target version of the control plane.
	KubernetesVersion string

	// CIKubernetesVersion is the target CI version of the control plane.
	// Useful for running kubeadm with CI Kubernetes version.
	// +k8s:conversion-gen=false
	CIKubernetesVersion string

	// ControlPlaneEndpoint sets a stable IP address or DNS name for the control plane; it

  # (Certificates must be obtained before this step.  The --cert-dir flag lets istioctl bypass the Kubernetes API server.)
  istioctl ps --xds-address istio.example.com:15012 --cert-dir ~/.istio-certs

  # Retrieve proxy status information via XDS from specific control plane in multi-control plane in-cluster configuration

{
   "graphTooltip": 1,
   "panels": [
      {
         "collapsed": false,
         "gridPos": {
            "h": 1,
            "w": 24,
            "x": 0,
            "y": 0
         },
         "id": 1,
         "panels": [ ],
         "title": "Process",
         "type": "row"
      },
      {
         "datasource": {
            "type": "datasource",
            "uid": "-- Mixed --"
         },

kube-system        coredns-5dd5756b68-mgjn9                             10.244.0.2  ambient-control-plane None                                TCP
kube-system        coredns-5dd5756b68-nzlpw                             10.244.0.3  ambient-control-plane None                                TCP
local-path-storage local-path-provisioner-6f8956fb48-vvnpn              10.244.0.4  ambient-control-plane None                                TCP

{
   "graphTooltip": 1,
   "panels": [
      {
         "collapsed": false,
         "gridPos": {
            "h": 1,
            "w": 24,
            "x": 0,
            "y": 0
         },
         "id": 1,
         "panels": [ ],
         "title": "Deployed Versions",
         "type": "row"
      },
      {
         "datasource": {
            "type": "datasource",
            "uid": "-- Mixed --"
         },

package core

import (
	"time"

	cluster "github.com/envoyproxy/go-control-plane/envoy/config/cluster/v3"
	core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	endpoint "github.com/envoyproxy/go-control-plane/envoy/config/endpoint/v3"
	tls "github.com/envoyproxy/go-control-plane/envoy/extensions/transport_sockets/tls/v3"
	http "github.com/envoyproxy/go-control-plane/envoy/extensions/upstreams/http/v3"

		os.Exit(1)
	}
	pipe.Close()
}

func TestPipePassing(t *testing.T) {
	t.Parallel()

	r, w, err := os.Pipe()
	if err != nil {
		t.Error(err)
	}
	const marker = "arrakis, dune, desert planet"
	childProc := helperCommand(t, "pipehandle", strconv.FormatUint(uint64(w.Fd()), 16), marker)
	childProc.SysProcAttr = &syscall.SysProcAttr{AdditionalInheritedHandles: []syscall.Handle{syscall.Handle(w.Fd())}}