Let operator manage autoscaling of node groups

operators/constellation-node-operator/api/v1alpha1/autoscalingstrategy_types.go

@@ -18,6 +18,8 @@ type AutoscalingStrategySpec struct {
 	DeploymentName string `json:"deploymentName"`
 	// DeploymentNamespace defines the namespace of the autoscaler deployment.
 	DeploymentNamespace string `json:"deploymentNamespace"`
+	// AutoscalerExtraArgs defines extra arguments to be passed to the autoscaler.
+	AutoscalerExtraArgs map[string]string `json:"autoscalerExtraArgs,omitempty"`
 }
 
 // AutoscalingStrategyStatus defines the observed state of AutoscalingStrategy.

operators/constellation-node-operator/api/v1alpha1/scalinggroup_types.go

@@ -13,6 +13,11 @@ import (
 const (
 	// ConditionOutdated is used to signal outdated scaling groups.
 	ConditionOutdated = "Outdated"
+
+	// WorkerRole is used to signal worker scaling groups.
+	WorkerRole NodeRole = "Worker"
+	// ControlPlaneRole is used to signal control plane scaling groups.
+	ControlPlaneRole NodeRole = "ControlPlane"
 )
 
 // ScalingGroupSpec defines the desired state of ScalingGroup.
@@ -21,10 +26,22 @@ type ScalingGroupSpec struct {
 	NodeImage string `json:"nodeImage,omitempty"`
 	// GroupID is the CSP specific, canonical identifier of a scaling group.
 	GroupID string `json:"groupId,omitempty"`
+	// AutoscalerGroupName is name that is expected by the autoscaler.
+	AutoscalerGroupName string `json:"autoscalerGroupName,omitempty"`
 	// Autoscaling specifies wether the scaling group should automatically scale using the cluster-autoscaler.
 	Autoscaling bool `json:"autoscaling,omitempty"`
+	// Min is the minimum number of nodes in the scaling group (used by cluster-autoscaler).
+	Min int32 `json:"min,omitempty"`
+	// Max is the maximum number of autoscaled nodes in the scaling group (used by cluster-autoscaler).
+	Max int32 `json:"max,omitempty"`
+	// Role is the role of the nodes in the scaling group.
+	Role NodeRole `json:"role,omitempty"`
 }
 
+// NodeRole is the role of a node.
+// +kubebuilder:validation:Enum=Worker;ControlPlane
+type NodeRole string
+
 // ScalingGroupStatus defines the observed state of ScalingGroup.
 type ScalingGroupStatus struct {
 	// ImageReference is the image currently used for newly created nodes in this scaling group.

operators/constellation-node-operator/api/v1alpha1/zz_generated.deepcopy.go

@@ -16,7 +16,7 @@ func (in *AutoscalingStrategy) DeepCopyInto(out *AutoscalingStrategy) {
 	*out = *in
 	out.TypeMeta = in.TypeMeta
 	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
-	out.Spec = in.Spec
+	in.Spec.DeepCopyInto(&out.Spec)
 	out.Status = in.Status
 }
 
@@ -73,6 +73,13 @@ func (in *AutoscalingStrategyList) DeepCopyObject() runtime.Object {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *AutoscalingStrategySpec) DeepCopyInto(out *AutoscalingStrategySpec) {
 	*out = *in
+	if in.AutoscalerExtraArgs != nil {
+		in, out := &in.AutoscalerExtraArgs, &out.AutoscalerExtraArgs
+		*out = make(map[string]string, len(*in))
+		for key, val := range *in {
+			(*out)[key] = val
+		}
+	}
 }
 
 // DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new AutoscalingStrategySpec.