cap the overrides map to be at 10

Author: saewoni

pkg/apis/crds/karpenter.azure.com_aksnodeclasses.yaml

@@ -186,6 +186,7 @@ spec:
                   LocalDNS configures the per-node local DNS, with VnetDNS and KubeDNS overrides.
                   LocalDNS helps improve performance and reliability of DNS resolution in an AKS cluster.
                   For more details see aka.ms/aks/localdns.
+                  Note: LocalDNS requires Kubernetes 1.36+ when using mode 'Preferred'. Use mode 'Required' at your own risk on older versions.
                 properties:
                   kubeDNSOverrides:
                     additionalProperties:
@@ -260,6 +261,7 @@ spec:
                           && has(self.protocol) && self.protocol == ''ForceTCP'')'
                     description: KubeDNS overrides apply to DNS traffic from pods
                       with dnsPolicy:ClusterFirst (referred to as KubeDNS traffic).
+                    maxProperties: 10
                     type: object
                   mode:
                     description: Mode of enablement for localDNS.
@@ -341,6 +343,7 @@ spec:
                           && has(self.protocol) && self.protocol == ''ForceTCP'')'
                     description: VnetDNS overrides apply to DNS traffic from pods
                       with dnsPolicy:default or kubelet (referred to as VnetDNS traffic).
+                    maxProperties: 10
                     type: object
                 required:
                 - kubeDNSOverrides
@@ -715,6 +718,7 @@ spec:
                   LocalDNS configures the per-node local DNS, with VnetDNS and KubeDNS overrides.
                   LocalDNS helps improve performance and reliability of DNS resolution in an AKS cluster.
                   For more details see aka.ms/aks/localdns.
+                  Note: LocalDNS requires Kubernetes 1.36+ when using mode 'Preferred'. Use mode 'Required' at your own risk on older versions.
                 properties:
                   kubeDNSOverrides:
                     additionalProperties:
@@ -789,6 +793,7 @@ spec:
                           && has(self.protocol) && self.protocol == ''ForceTCP'')'
                     description: KubeDNS overrides apply to DNS traffic from pods
                       with dnsPolicy:ClusterFirst (referred to as KubeDNS traffic).
+                    maxProperties: 10
                     type: object
                   mode:
                     description: Mode of enablement for localDNS.
@@ -870,6 +875,7 @@ spec:
                           && has(self.protocol) && self.protocol == ''ForceTCP'')'
                     description: VnetDNS overrides apply to DNS traffic from pods
                       with dnsPolicy:default or kubelet (referred to as VnetDNS traffic).
+                    maxProperties: 10
                     type: object
                 required:
                 - kubeDNSOverrides

pkg/apis/v1alpha2/aksnodeclass.go

@@ -89,6 +89,7 @@ type AKSNodeClassSpec struct {
 	// LocalDNS configures the per-node local DNS, with VnetDNS and KubeDNS overrides.
 	// LocalDNS helps improve performance and reliability of DNS resolution in an AKS cluster.
 	// For more details see aka.ms/aks/localdns.
+	// Note: LocalDNS requires Kubernetes 1.36+ when using mode 'Preferred'. Use mode 'Required' at your own risk on older versions.
 	// +optional
 	LocalDNS *LocalDNS `json:"localDNS,omitempty"`
 }
@@ -130,9 +131,11 @@ type LocalDNS struct {
 	// +required
 	Mode *LocalDNSMode `json:"mode"`
 	// VnetDNS overrides apply to DNS traffic from pods with dnsPolicy:default or kubelet (referred to as VnetDNS traffic).
+	// +kubebuilder:validation:MaxProperties=10
 	// +required
 	VnetDNSOverrides map[string]*LocalDNSOverrides `json:"vnetDNSOverrides"`
 	// KubeDNS overrides apply to DNS traffic from pods with dnsPolicy:ClusterFirst (referred to as KubeDNS traffic).
+	// +kubebuilder:validation:MaxProperties=10
 	// +required
 	KubeDNSOverrides map[string]*LocalDNSOverrides `json:"kubeDNSOverrides"`
 }

pkg/apis/v1beta1/aksnodeclass.go

@@ -90,6 +90,7 @@ type AKSNodeClassSpec struct {
 	// LocalDNS configures the per-node local DNS, with VnetDNS and KubeDNS overrides.
 	// LocalDNS helps improve performance and reliability of DNS resolution in an AKS cluster.
 	// For more details see aka.ms/aks/localdns.
+	// Note: LocalDNS requires Kubernetes 1.36+ when using mode 'Preferred'. Use mode 'Required' at your own risk on older versions.
 	// +optional
 	LocalDNS *LocalDNS `json:"localDNS,omitempty"`
 }
@@ -131,9 +132,11 @@ type LocalDNS struct {
 	// +required
 	Mode *LocalDNSMode `json:"mode"`
 	// VnetDNS overrides apply to DNS traffic from pods with dnsPolicy:default or kubelet (referred to as VnetDNS traffic).
+	// +kubebuilder:validation:MaxProperties=10
 	// +required
 	VnetDNSOverrides map[string]*LocalDNSOverrides `json:"vnetDNSOverrides"`
 	// KubeDNS overrides apply to DNS traffic from pods with dnsPolicy:ClusterFirst (referred to as KubeDNS traffic).
+	// +kubebuilder:validation:MaxProperties=10
 	// +required
 	KubeDNSOverrides map[string]*LocalDNSOverrides `json:"kubeDNSOverrides"`
 }