remove flavor check to relief restrictions to CPU

Author: jichenjc

controllers/openstackcluster_controller.go

@@ -349,7 +349,7 @@ func reconcileBastion(scope scope.Scope, cluster *clusterv1.Cluster, openStackCl
 		}
 	}
 
-	instanceStatus, err = computeService.CreateInstance(openStackCluster, openStackCluster, instanceSpec, cluster.Name, true)
+	instanceStatus, err = computeService.CreateInstance(openStackCluster, openStackCluster, instanceSpec, cluster.Name)
 	if err != nil {
 		return fmt.Errorf("failed to reconcile bastion: %w", err)
 	}

controllers/openstackmachine_controller.go

@@ -441,7 +441,7 @@ func (r *OpenStackMachineReconciler) getOrCreate(logger logr.Logger, cluster *cl
 	if instanceStatus == nil {
 		instanceSpec := machineToInstanceSpec(openStackCluster, machine, openStackMachine, userData)
 		logger.Info("Machine does not exist, creating Machine", "name", openStackMachine.Name)
-		instanceStatus, err = computeService.CreateInstance(openStackMachine, openStackCluster, instanceSpec, cluster.Name, false)
+		instanceStatus, err = computeService.CreateInstance(openStackMachine, openStackCluster, instanceSpec, cluster.Name)
 		if err != nil {
 			conditions.MarkFalse(openStackMachine, infrav1.InstanceReadyCondition, infrav1.InstanceCreateFailedReason, clusterv1.ConditionSeverityError, err.Error())
 			return nil, fmt.Errorf("create OpenStack instance: %w", err)

docs/book/src/clusteropenstack/configuration.md

@@ -153,6 +153,8 @@ The DNS servers must be exposed as an environment variable `OPENSTACK_DNS_NAMESE
 
 The flavors for control plane and worker node machines must be exposed as environment variables `OPENSTACK_CONTROL_PLANE_MACHINE_FLAVOR` and `OPENSTACK_NODE_MACHINE_FLAVOR` respectively.
 
+The recommmend minimum value of control plane flavor's vCPU is 2 and minimum value of worker node flavor's vCPU is 1.
+
 # Optional Configuration
 
 ## Log level

pkg/cloud/services/compute/instance.go

@@ -221,23 +221,20 @@ func (s *Service) constructPorts(openStackCluster *infrav1.OpenStackCluster, ins
 	return ports, nil
 }
 
-func (s *Service) CreateInstance(eventObject runtime.Object, openStackCluster *infrav1.OpenStackCluster, instanceSpec *InstanceSpec, clusterName string, isBastion bool) (*InstanceStatus, error) {
-	return s.createInstanceImpl(eventObject, openStackCluster, instanceSpec, clusterName, isBastion, retryIntervalInstanceStatus)
+func (s *Service) CreateInstance(eventObject runtime.Object, openStackCluster *infrav1.OpenStackCluster, instanceSpec *InstanceSpec, clusterName string) (*InstanceStatus, error) {
+	return s.createInstanceImpl(eventObject, openStackCluster, instanceSpec, clusterName, retryIntervalInstanceStatus)
 }
 
-func (s *Service) getAndValidateFlavor(flavorName string, isBastion bool) (*flavors.Flavor, error) {
+func (s *Service) getAndValidateFlavor(flavorName string) (*flavors.Flavor, error) {
 	f, err := s.getComputeClient().GetFlavorFromName(flavorName)
 	if err != nil {
 		return nil, fmt.Errorf("error getting flavor from flavor name %s: %v", flavorName, err)
 	}
-	if !isBastion && f.VCPUs <= 1 {
-		return nil, fmt.Errorf("kubeadm requires a minimum of 2 vCPUs, pick a flavor with at least 2 vCPUs")
-	}
 
 	return f, nil
 }
 
-func (s *Service) createInstanceImpl(eventObject runtime.Object, openStackCluster *infrav1.OpenStackCluster, instanceSpec *InstanceSpec, clusterName string, isBastion bool, retryInterval time.Duration) (*InstanceStatus, error) {
+func (s *Service) createInstanceImpl(eventObject runtime.Object, openStackCluster *infrav1.OpenStackCluster, instanceSpec *InstanceSpec, clusterName string, retryInterval time.Duration) (*InstanceStatus, error) {
 	var server *clients.ServerExt
 	portList := []servers.Network{}
 
@@ -246,7 +243,7 @@ func (s *Service) createInstanceImpl(eventObject runtime.Object, openStackCluste
 		return nil, fmt.Errorf("error getting image ID: %v", err)
 	}
 
-	flavor, err := s.getAndValidateFlavor(instanceSpec.Flavor, isBastion)
+	flavor, err := s.getAndValidateFlavor(instanceSpec.Flavor)
 	if err != nil {
 		return nil, err
 	}

pkg/cloud/services/compute/instance_test.go

@@ -976,7 +976,7 @@ func TestService_ReconcileInstance(t *testing.T) {
 			}
 
 			// Call CreateInstance with a reduced retry interval to speed up the test
-			_, err = s.createInstanceImpl(&infrav1.OpenStackMachine{}, getDefaultOpenStackCluster(), tt.getInstanceSpec(), "cluster-name", false, time.Nanosecond)
+			_, err = s.createInstanceImpl(&infrav1.OpenStackMachine{}, getDefaultOpenStackCluster(), tt.getInstanceSpec(), "cluster-name", time.Nanosecond)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("Service.CreateInstance() error = %v, wantErr %v", err, tt.wantErr)
 				return