fix: fix kvm2 numa simulate ut&lint

cmd/minikube/cmd/start_flags.go

@@ -313,18 +313,7 @@ func generateClusterConfig(cmd *cobra.Command, existing *config.ClusterConfig, k
 			out.WarningT("--network flag is only valid with the docker/podman drivers, it will be ignored")
 		}
 
-		if viper.GetInt(kvmNUMACount) < 1 || viper.GetInt(kvmNUMACount) > 8 {
-			exit.Message(reason.Usage, "--kvm-numa-count range is 1-8")
-		}
-		if viper.GetInt(kvmNUMACount) > 1 {
-			v, err := pkgutil.ParseKubernetesVersion(k8sVersion)
-			if err != nil {
-				exit.Message(reason.Usage, "invalid kubernetes version")
-			}
-			if v.LT(semver.Version{Major: 1,Minor: 18}){
-				exit.Message(reason.Usage, "numa node is only supported on k8s v1.18 and later")
-			}
-		}
+		checkNumaCount(k8sVersion)
 
 		cc = config.ClusterConfig{
 			Name:                    ClusterFlagValue(),
@@ -423,6 +412,22 @@ func generateClusterConfig(cmd *cobra.Command, existing *config.ClusterConfig, k
 	return createNode(cc, kubeNodeName, existing)
 }
 
+func checkNumaCount(k8sVersion string) {
+	if viper.GetInt(kvmNUMACount) < 1 || viper.GetInt(kvmNUMACount) > 8 {
+		exit.Message(reason.Usage, "--kvm-numa-count range is 1-8")
+	}
+
+	if viper.GetInt(kvmNUMACount) > 1 {
+		v, err := pkgutil.ParseKubernetesVersion(k8sVersion)
+		if err != nil {
+			exit.Message(reason.Usage, "invalid kubernetes version")
+		}
+		if v.LT(semver.Version{Major: 1, Minor: 18}) {
+			exit.Message(reason.Usage, "numa node is only supported on k8s v1.18 and later")
+		}
+	}
+}
+
 // upgradeExistingConfig upgrades legacy configuration files
 func upgradeExistingConfig(cc *config.ClusterConfig) {
 	if cc == nil {

cmd/minikube/cmd/start_test.go

@@ -133,6 +133,7 @@ func TestMirrorCountry(t *testing.T) {
 			cmd := &cobra.Command{}
 			viper.SetDefault(imageRepository, test.imageRepository)
 			viper.SetDefault(imageMirrorCountry, test.mirrorCountry)
+			viper.SetDefault(kvmNUMACount, 1)
 			config, _, err := generateClusterConfig(cmd, nil, k8sVersion, "none")
 			if err != nil {
 				t.Fatalf("Got unexpected error %v during config generation", err)

pkg/drivers/kvm/kvm.go

@@ -320,11 +320,11 @@ func (d *Driver) Create() (err error) {
 	}
 
 	if d.NUMANodeCount > 1 {
-		NUMAXML, err := NumaXml(d.CPU, d.Memory, d.NUMANodeCount)
+		numaXML, err := numaXML(d.CPU, d.Memory, d.NUMANodeCount)
 		if err != nil {
 			return errors.Wrap(err, "creating NUMA XML")
 		}
-		d.NUMANodeXML = NUMAXML
+		d.NUMANodeXML = numaXML
 	}
 
 	store := d.ResolveStorePath(".")

pkg/drivers/kvm/numa.go

@@ -24,8 +24,8 @@ import (
 	"text/template"
 )
 
-// NUMATmpl NUMA XML Template
-const NUMATmpl = `
+// numaTmpl NUMA XML Template
+const numaTmpl = `
 <numa>
   {{- range $idx,$val :=. }}
   <cell id='{{$idx}}' cpus='{{$val.CPUTopology}}' memory='{{$val.Memory}}' unit='MiB'/>
@@ -33,16 +33,19 @@ const NUMATmpl = `
 </numa>
 `
 
-// NUMA this struct use for NUMATmpl
+// NUMA this struct use for numaTmpl
 type NUMA struct {
-	CPUCount    int
-	Memory      int
+	// cpu count on numa node
+	CPUCount int
+	// memory on numa node
+	Memory int
+	// cpu sequence on numa node eg: 0,1,2,3
 	CPUTopology string
 }
 
-// NumaXml generate numa xml
+// numaXML generate numa xml
 // evenly distributed cpu core & memory to each numa node
-func NumaXml(cpu, memory, numaCount int) (string, error) {
+func numaXML(cpu, memory, numaCount int) (string, error) {
 	if numaCount < 1 {
 		return "", fmt.Errorf("numa node count must >= 1")
 	}
@@ -81,10 +84,10 @@ func NumaXml(cpu, memory, numaCount int) (string, error) {
 		numaNodes[i].Memory++
 	}
 
-	tmpl := template.Must(template.New("numa").Parse(NUMATmpl))
-	var NUMAXML bytes.Buffer
-	if err := tmpl.Execute(&NUMAXML, numaNodes); err != nil {
+	tmpl := template.Must(template.New("numa").Parse(numaTmpl))
+	var numaXML bytes.Buffer
+	if err := tmpl.Execute(&numaXML, numaNodes); err != nil {
 		return "", fmt.Errorf("couldn't generate numa XML: %v", err)
 	}
-	return NUMAXML.String(), nil
+	return numaXML.String(), nil
 }

pkg/drivers/kvm/numa_test.go

@@ -21,13 +21,13 @@ import (
 	"testing"
 )
 
-func TestGetNUMAXml(t *testing.T) {
-	_, err := NumaXml(1, 1024, 0)
+func TestNumaXml(t *testing.T) {
+	_, err := numaXML(1, 1024, 0)
 	if err == nil {
 		t.Errorf("check invalid numa count failed: %s", err)
 	}
 
-	xml, err := NumaXml(10, 10240, 8)
+	xml, err := numaXML(10, 10240, 8)
 	expXML := `<numa>
   <cell id='0' cpus='0,1' memory='1280' unit='MiB'/>
   <cell id='1' cpus='2,3' memory='1280' unit='MiB'/>