Added AWS dedicated host support

Author: vr4manta

features/features.go

@@ -753,8 +753,8 @@ var (
 					mustRegister()
 
 	FeatureGateAWSDedicatedHosts = newFeatureGate("AWSDedicatedHosts").
-					reportProblemsToJiraComponent("Installer").
-					contactPerson("faermanj").
+					reportProblemsToJiraComponent("splat").
+					contactPerson("rvanderp3").
 					productScope(ocpSpecific).
 					enhancementPR("https://github.com/openshift/enhancements/pull/1781").
 					enableIn(configv1.DevPreviewNoUpgrade, configv1.TechPreviewNoUpgrade).

machine/v1beta1/types_awsprovider.go

@@ -107,6 +107,15 @@ type AWSMachineProviderConfig struct {
 	// If this value is selected, capacityReservationID must be specified to identify the target reservation.
 	// +optional
 	MarketType MarketType `json:"marketType,omitempty"`
+
+	// dedicatedHost configures placement on AWS Dedicated Hosts.
+	// When omitted, the instance is not constrained to a dedicated host.
+	// If hostAffinity is set to "Host", a host ID must be provided at dedicatedHost.host.hostID.
+	// If hostAffinity is set to "AnyAvailable", dedicatedHost.host must be omitted.
+	// If hostAffinity is omitted and host.hostID is set, the instance starts on that specific host.
+	// +openshift:enable:FeatureGate=AWSDedicatedHosts
+	// +optional
+	DedicatedHost *DedicatedHost `json:"dedicatedHost,omitempty"`
 }
 
 // BlockDeviceMappingSpec describes a block device mapping
@@ -355,3 +364,46 @@ const (
 	// When set to CapacityBlock the instance utilizes pre-purchased compute capacity (capacity blocks) with AWS Capacity Reservations.
 	MarketTypeCapacityBlock MarketType = "CapacityBlock"
 )
+
+type DedicatedHost struct {
+	// hostAffinity selects how the instance is placed on a dedicated host.
+	// Valid values are "AnyAvailable", "Host", and omitted.
+	// - AnyAvailable: the platform selects any available dedicated host; do not set host.
+	// - Host: the instance must run on a specific host; set host.hostID.
+	// - omitted: if host.hostID is set, the instance runs on that specific host; otherwise no host constraint is applied.
+	// When hostAffinity is set, host.hostID is required for "Host" and must be omitted for "AnyAvailable".
+	// +kubebuilder:validation:MaxLength=64
+	// +openshift:enable:FeatureGate=AWSDedicatedHosts
+	// +optional
+	HostAffinity *HostAffinity `json:"hostAffinity,omitempty"`
+
+	// host specifies a particular dedicated host when required by hostAffinity or when
+	// hostAffinity is omitted and you want to target a specific host.
+	// Must be omitted when hostAffinity is "AnyAvailable".
+	// +openshift:enable:FeatureGate=AWSDedicatedHosts
+	// +optional
+	Host *Host `json:"host,omitempty"`
+}
+
+// HostAffinity selects how an instance should be placed on AWS Dedicated Hosts.
+type HostAffinity string
+
+const (
+	// HostAffinityAnyAvailable lets the platform select any available dedicated host.
+	HostAffinityAnyAvailable HostAffinity = "AnyAvailable"
+
+	// HostAffinityHost requires specifying a particular host via dedicatedHost.host.hostID.
+	HostAffinityHost HostAffinity = "Host"
+)
+
+type Host struct {
+	// hostID identifies the AWS Dedicated Host on which the instance must run.
+	// Use this when hostAffinity is "Host" or when hostAffinity is omitted and you want a specific host.
+	// The value must start with "h-" followed by 17 lowercase hexadecimal characters (0-9 and a-f).
+	// Maximum length is 19 characters.
+	// +kubebuilder:validation:XValidation:rule="self == null || self.matches('^h-[0-9a-f]{17}$')",message="hostID must start with 'h-' followed by 17 lowercase hexadecimal characters (0-9 and a-f)"
+	// +kubebuilder:validation:MaxLength=19
+	// +openshift:enable:FeatureGate=AWSDedicatedHosts
+	// +optional
+	HostID *string `json:"hostID,omitempty"`
+}

machine/v1beta1/zz_generated.deepcopy.go

@@ -22039,6 +22039,10 @@
           "description": "credentialsSecret is a reference to the secret with AWS credentials. Otherwise, defaults to permissions provided by attached IAM role where the actuator is running.",
           "$ref": "#/definitions/io.k8s.api.core.v1.LocalObjectReference"
         },
+        "dedicatedHost": {
+          "description": "dedicatedHost configures placement on AWS Dedicated Hosts. When omitted, the instance is not constrained to a dedicated host. If hostAffinity is set to \"Host\", a host ID must be provided at dedicatedHost.host.hostID. If hostAffinity is set to \"AnyAvailable\", dedicatedHost.host must be omitted. If hostAffinity is omitted and host.hostID is set, the instance starts on that specific host.",
+          "$ref": "#/definitions/com.github.openshift.api.machine.v1beta1.DedicatedHost"
+        },
         "deviceIndex": {
           "description": "deviceIndex is the index of the device on the instance for the network interface attachment. Defaults to 0.",
           "type": "integer",
@@ -22622,6 +22626,19 @@
         }
       }
     },
+    "com.github.openshift.api.machine.v1beta1.DedicatedHost": {
+      "type": "object",
+      "properties": {
+        "host": {
+          "description": "host specifies a particular dedicated host when required by hostAffinity or when hostAffinity is omitted and you want to target a specific host. Must be omitted when hostAffinity is \"AnyAvailable\".",
+          "$ref": "#/definitions/com.github.openshift.api.machine.v1beta1.Host"
+        },
+        "hostAffinity": {
+          "description": "hostAffinity selects how the instance is placed on a dedicated host. Valid values are \"AnyAvailable\", \"Host\", and omitted. - AnyAvailable: the platform selects any available dedicated host; do not set host. - Host: the instance must run on a specific host; set host.hostID. - omitted: if host.hostID is set, the instance runs on that specific host; otherwise no host constraint is applied. When hostAffinity is set, host.hostID is required for \"Host\" and must be omitted for \"AnyAvailable\".",
+          "type": "string"
+        }
+      }
+    },
     "com.github.openshift.api.machine.v1beta1.DiskEncryptionSetParameters": {
       "description": "DiskEncryptionSetParameters is the disk encryption set properties",
       "type": "object",
@@ -23092,6 +23109,15 @@
         }
       }
     },
+    "com.github.openshift.api.machine.v1beta1.Host": {
+      "type": "object",
+      "properties": {
+        "hostID": {
+          "description": "hostID identifies the AWS Dedicated Host on which the instance must run. Use this when hostAffinity is \"Host\" or when hostAffinity is omitted and you want a specific host. The value must start with \"h-\" followed by 17 lowercase hexadecimal characters (0-9 and a-f). Maximum length is 19 characters.",
+          "type": "string"
+        }
+      }
+    },
     "com.github.openshift.api.machine.v1beta1.Image": {
       "description": "Image is a mirror of azure sdk compute.ImageReference",
       "type": "object",