//	    - "10.100.0.1"
//	  # external:
//	    # endpoints:
//	    # - "10.100.0.1:2379"
//	    # - "10.100.0.2:2379"
//	    # caFile: "/etcd/kubernetes/pki/etcd/etcd-ca.crt"
//	    # certFile: "/etcd/kubernetes/pki/etcd/etcd.crt"
//	    # keyFile: "/etcd/kubernetes/pki/etcd/etcd.key"
//	networking:
//	  serviceSubnet: "10.96.0.0/16"
//	  podSubnet: "10.244.0.0/24"
//	  dnsDomain: "cluster.local"

		&compbasemetrics.HistogramOpts{
			Name: "etcd_request_duration_seconds",
			Help: "Etcd request latency in seconds for each operation and object type.",
			// Etcd request latency in seconds for each operation and object type.
			// This metric is used for verifying etcd api call latencies SLO
			// keep consistent with apiserver metric 'requestLatencies' in

	}{
		{
			name:             "external etcd but no etcd upgrade",
			cfg:              externalEtcd,
			etcdUpgrade:      false,
			shouldDeleteEtcd: true,
		},
		{
			name:             "external etcd with etcd upgrade",
			cfg:              externalEtcd,
			etcdUpgrade:      true,
			shouldDeleteEtcd: true,
		},
		{
			name:             "stacked etcd but no etcd upgrade",
			cfg:              stackedEtcd,

// ClusterConfiguration contains cluster-wide configuration for a kubeadm cluster
type ClusterConfiguration struct {
	metav1.TypeMeta `json:",inline"`

	// Etcd holds configuration for etcd.
	// +optional
	Etcd Etcd `json:"etcd,omitempty"`

	// Networking holds configuration for the networking topology of the cluster.
	// +optional
	Networking Networking `json:"networking,omitempty"`

	github.com/xiang90/probing v0.0.0-20190116061207-43a291ad63a2 // indirect
	github.com/xlab/treeprint v1.2.0 // indirect
	go.etcd.io/bbolt v1.3.9 // indirect
	go.etcd.io/etcd/client/v2 v2.305.13 // indirect
	go.etcd.io/etcd/pkg/v3 v3.5.13 // indirect
	go.etcd.io/etcd/raft/v3 v3.5.13 // indirect
	go.etcd.io/etcd/server/v3 v3.5.13 // indirect
	go.opencensus.io v0.24.0 // indirect

		data, ok := c.(InitData)
		if !ok {
			return errors.New("certs phase invoked with an invalid data struct")
		}

		// if using external etcd, skips etcd certificate authority generation
		if data.Cfg().Etcd.External != nil && ca.Name == "etcd-ca" {
			fmt.Printf("[certs] External etcd mode: Skipping %s certificate authority generation\n", ca.BaseName)
			return nil
		}

	}
}

// TestPGOIntendedInlining tests that specific functions are inlined when PGO
// is applied to the exact source that was profiled.
func TestPGOIntendedInlining(t *testing.T) {
	wd, err := os.Getwd()
	if err != nil {
		t.Fatalf("error getting wd: %v", err)
	}
	srcDir := filepath.Join(wd, "testdata/pgo/inline")

	// Copy the module to a scratch location so we can add a go.mod.
	dir := t.TempDir()

				"sa.key":             key,
				"etcd/ca.crt":        caCert,
				"etcd/ca.key":        caKey,
			},
		},
		{
			name: "missing ca.crt",
			files: certstestutil.PKIFiles{
				"ca.key":             caKey,
				"front-proxy-ca.crt": caCert,
				"front-proxy-ca.key": caKey,
				"sa.pub":             publicKey,
				"sa.key":             key,
				"etcd/ca.crt":        caCert,
				"etcd/ca.key":        caKey,

		HealthcheckTimeout: 5 * time.Second,
	}
	cfg.Transport.ServerList = client.Endpoints()
	tests := []struct {
		name string
		want error
	}{
		{
			name: "etcd ok",
		},
		{
			name: "etcd down",
			want: errors.New("etcd down"),
		},
	}
	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {

			ready := make(chan struct{})

			var counter uint64

		},
		{
			name: "existing valid users mapped to groups",
			users: []*entry{
				{name: "kubeadm-etcd", id: 100, gid: 102, shell: noshell},
				{name: "kubeadm-kas", id: 101, gid: 103, shell: noshell},
			},
			groups: []*entry{
				{name: "kubeadm-etcd", id: 102, userNames: []string{"kubeadm-etcd"}},
				{name: "kubeadm-kas", id: 103, userNames: []string{"kubeadm-kas"}},