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✨ Add support for autoscaling to/from 0 #2880

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✨ Add support for autoscaling to/from 0 #2880

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8225d5f
Extend OpenStackMachineTemplate.status api
nikParasyr Dec 3, 2025
489ce9c
Add OpenStackMachineTemplate controller
nikParasyr Dec 3, 2025
d5880a7
Add logic to OpenStackMachineTemplate controller
nikParasyr Dec 4, 2025
4dcc029
Add documentation for AutoScaleFromZero
nikParasyr Dec 4, 2025
127b99f
Add e2e tests for autoscaling
nikParasyr Dec 4, 2025
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1 change: 1 addition & 0 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -333,6 +333,7 @@ generate-codegen: generate-controller-gen $(OPENAPI_GEN) $(APPLYCONFIGURATION_GE
k8s.io/api/core/v1 \
k8s.io/apimachinery/pkg/apis/meta/v1 \
k8s.io/apimachinery/pkg/runtime \
k8s.io/apimachinery/pkg/api/resource \
k8s.io/apimachinery/pkg/version
@echo "** Generating openapi.json **"
go run ./cmd/models-schema | jq > ./openapi.json
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33 changes: 32 additions & 1 deletion api/v1beta1/openstackmachinetemplate_types.go
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Expand Up @@ -17,6 +17,7 @@ limitations under the License.
package v1beta1

import (
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)

Expand All @@ -25,17 +26,39 @@ type OpenStackMachineTemplateSpec struct {
Template OpenStackMachineTemplateResource `json:"template"`
}

// OpenStackMachineTemplateStatus defines the observed state of OpenStackMachineTemplate.
type OpenStackMachineTemplateStatus struct {
// Capacity defines the resource capacity for this machine.
// This value is used for autoscaling from zero operations as defined in:
// https://github.com/kubernetes-sigs/cluster-api/blob/main/docs/proposals/20210310-opt-in-autoscaling-from-zero.md
// +optional
Capacity corev1.ResourceList `json:"capacity,omitempty"`
// +optional
NodeInfo NodeInfo `json:"nodeInfo,omitempty,omitzero"`
}

// NodeInfo contains information about the node's architecture and operating system.
// +kubebuilder:validation:MinProperties=1
type NodeInfo struct {
// operatingSystem is a string representing the operating system of the node.
// This may be a string like 'linux' or 'windows'.
// +optional
OperatingSystem string `json:"operatingSystem,omitempty"`
}

// +genclient
// +kubebuilder:object:root=true
// +kubebuilder:storageversion
// +kubebuilder:resource:path=openstackmachinetemplates,scope=Namespaced,categories=cluster-api,shortName=osmt
// +kubebuilder:subresource:status

// OpenStackMachineTemplate is the Schema for the openstackmachinetemplates API.
type OpenStackMachineTemplate struct {
metav1.TypeMeta `json:",inline"`
metav1.ObjectMeta `json:"metadata,omitempty"`

Spec OpenStackMachineTemplateSpec `json:"spec,omitempty"`
Spec OpenStackMachineTemplateSpec `json:"spec,omitempty"`
Status OpenStackMachineTemplateStatus `json:"status,omitempty"`
}

// +kubebuilder:object:root=true
Expand All @@ -50,3 +73,11 @@ type OpenStackMachineTemplateList struct {
func init() {
objectTypes = append(objectTypes, &OpenStackMachineTemplate{}, &OpenStackMachineTemplateList{})
}

// GetIdentifyRef returns the object's namespace and IdentityRef if it has an IdentityRef, or nulls if it does not.
func (r *OpenStackMachineTemplate) GetIdentityRef() (*string, *OpenStackIdentityReference) {
if r.Spec.Template.Spec.IdentityRef != nil {
return &r.Namespace, r.Spec.Template.Spec.IdentityRef
}
return nil, nil
}
39 changes: 39 additions & 0 deletions api/v1beta1/zz_generated.deepcopy.go
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6 changes: 6 additions & 0 deletions api_violations.report
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Original file line number Diff line number Diff line change
Expand Up @@ -73,6 +73,12 @@ API rule violation: names_match,k8s.io/api/core/v1,RBDVolumeSource,RBDPool
API rule violation: names_match,k8s.io/api/core/v1,RBDVolumeSource,RadosUser
API rule violation: names_match,k8s.io/api/core/v1,VolumeSource,CephFS
API rule violation: names_match,k8s.io/api/core/v1,VolumeSource,StorageOS
API rule violation: names_match,k8s.io/apimachinery/pkg/api/resource,Quantity,Format
API rule violation: names_match,k8s.io/apimachinery/pkg/api/resource,Quantity,d
API rule violation: names_match,k8s.io/apimachinery/pkg/api/resource,Quantity,i
API rule violation: names_match,k8s.io/apimachinery/pkg/api/resource,Quantity,s
API rule violation: names_match,k8s.io/apimachinery/pkg/api/resource,int64Amount,scale
API rule violation: names_match,k8s.io/apimachinery/pkg/api/resource,int64Amount,value
API rule violation: names_match,k8s.io/apimachinery/pkg/apis/meta/v1,APIResourceList,APIResources
API rule violation: names_match,k8s.io/apimachinery/pkg/apis/meta/v1,Duration,Duration
API rule violation: names_match,k8s.io/apimachinery/pkg/apis/meta/v1,InternalEvent,Object
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