✨ Add nodeReuse feature

api/v1alpha3/conversion.go

@@ -112,6 +112,7 @@ func (src *Metal3MachineTemplate) ConvertTo(dstRaw conversion.Hub) error {
 	dst.Spec.Template.Spec.NetworkData = restored.Spec.Template.Spec.NetworkData
 	dst.Spec.Template.Spec.DataTemplate = restored.Spec.Template.Spec.DataTemplate
 	dst.Spec.Template.Spec.Image = restored.Spec.Template.Spec.Image
+	dst.Spec.NodeReuse = restored.Spec.NodeReuse
 
 	return nil
 }
@@ -165,3 +166,11 @@ func Convert_v1alpha4_Image_To_v1alpha3_Image(in *v1alpha4.Image, out *Image, s
 
 	return nil
 }
+
+func Convert_v1alpha4_Metal3MachineTemplateSpec_To_v1alpha3_Metal3MachineTemplateSpec(in *v1alpha4.Metal3MachineTemplateSpec, out *Metal3MachineTemplateSpec, s apiconversion.Scope) error {
+	if err := autoConvert_v1alpha4_Metal3MachineTemplateSpec_To_v1alpha3_Metal3MachineTemplateSpec(in, out, s); err != nil {
+		return err
+	}
+
+	return nil
+}

api/v1alpha4/metal3machinetemplate_types.go

@@ -23,6 +23,12 @@ import (
 // Metal3MachineTemplateSpec defines the desired state of Metal3MachineTemplate
 type Metal3MachineTemplateSpec struct {
 	Template Metal3MachineTemplateResource `json:"template"`
+
+	// When set to True, CAPM3 Machine controller will
+	// pick the same pool of BMHs' that were released during the upgrade operation.
+	// +kubebuilder:default=false
+	// +optional
+	NodeReuse bool `json:"nodeReuse"`
 }
 
 // +k8s:deepcopy-gen:interfaces=k8s.io/apimachinery/pkg/runtime.Object

baremetal/metal3data_manager.go

@@ -270,7 +270,7 @@ func (m *DataManager) createSecrets(ctx context.Context) error {
 	return nil
 }
 
-// CreateSecrets creates the secret if they do not exist.
+// ReleaseLeases releases addresses from pool.
 func (m *DataManager) ReleaseLeases(ctx context.Context) error {
 	if m.Data.Spec.Template.Name == "" {
 		return nil