main.go

/*
Copyright 2018 The Kubernetes Authors.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

// Package main contains the main entrypoint for the AWS provider components.
package main

import (
	"context"
	"errors"
	"flag"
	"fmt"
	"net/http"
	_ "net/http/pprof"
	"os"
	"time"

	"github.com/spf13/pflag"
	"k8s.io/apimachinery/pkg/runtime"
	cgscheme "k8s.io/client-go/kubernetes/scheme"
	"k8s.io/client-go/tools/leaderelection/resourcelock"
	cgrecord "k8s.io/client-go/tools/record"
	"k8s.io/component-base/logs"
	v1 "k8s.io/component-base/logs/api/v1"
	_ "k8s.io/component-base/logs/json/register"
	"k8s.io/klog/v2"
	"k8s.io/utils/ptr"
	ctrl "sigs.k8s.io/controller-runtime"
	"sigs.k8s.io/controller-runtime/pkg/cache"
	"sigs.k8s.io/controller-runtime/pkg/controller"
	"sigs.k8s.io/controller-runtime/pkg/webhook"

	// +kubebuilder:scaffold:imports
	infrav1beta1 "sigs.k8s.io/cluster-api-provider-aws/v2/api/v1beta1"
	infrav1 "sigs.k8s.io/cluster-api-provider-aws/v2/api/v1beta2"
	eksbootstrapv1beta1 "sigs.k8s.io/cluster-api-provider-aws/v2/bootstrap/eks/api/v1beta1"
	eksbootstrapv1 "sigs.k8s.io/cluster-api-provider-aws/v2/bootstrap/eks/api/v1beta2"
	eksbootstrapcontrollers "sigs.k8s.io/cluster-api-provider-aws/v2/bootstrap/eks/controllers"
	"sigs.k8s.io/cluster-api-provider-aws/v2/controllers"
	ekscontrolplanev1beta1 "sigs.k8s.io/cluster-api-provider-aws/v2/controlplane/eks/api/v1beta1"
	ekscontrolplanev1 "sigs.k8s.io/cluster-api-provider-aws/v2/controlplane/eks/api/v1beta2"
	ekscontrolplanecontrollers "sigs.k8s.io/cluster-api-provider-aws/v2/controlplane/eks/controllers"
	rosacontrolplanev1 "sigs.k8s.io/cluster-api-provider-aws/v2/controlplane/rosa/api/v1beta2"
	rosacontrolplanecontrollers "sigs.k8s.io/cluster-api-provider-aws/v2/controlplane/rosa/controllers"
	expinfrav1beta1 "sigs.k8s.io/cluster-api-provider-aws/v2/exp/api/v1beta1"
	expinfrav1 "sigs.k8s.io/cluster-api-provider-aws/v2/exp/api/v1beta2"
	"sigs.k8s.io/cluster-api-provider-aws/v2/exp/controlleridentitycreator"
	expcontrollers "sigs.k8s.io/cluster-api-provider-aws/v2/exp/controllers"
	"sigs.k8s.io/cluster-api-provider-aws/v2/exp/instancestate"
	"sigs.k8s.io/cluster-api-provider-aws/v2/feature"
	"sigs.k8s.io/cluster-api-provider-aws/v2/pkg/cloud/endpoints"
	"sigs.k8s.io/cluster-api-provider-aws/v2/pkg/cloud/scope"
	"sigs.k8s.io/cluster-api-provider-aws/v2/pkg/logger"
	"sigs.k8s.io/cluster-api-provider-aws/v2/pkg/record"
	"sigs.k8s.io/cluster-api-provider-aws/v2/version"
	clusterv1 "sigs.k8s.io/cluster-api/api/v1beta1"
	expclusterv1 "sigs.k8s.io/cluster-api/exp/api/v1beta1"
	"sigs.k8s.io/cluster-api/util/flags"
)

var (
	scheme   = runtime.NewScheme()
	setupLog = logger.NewLogger(ctrl.Log.WithName("setup"))
)

func init() {
	_ = eksbootstrapv1.AddToScheme(scheme)
	_ = eksbootstrapv1beta1.AddToScheme(scheme)
	_ = cgscheme.AddToScheme(scheme)
	_ = clusterv1.AddToScheme(scheme)
	_ = expclusterv1.AddToScheme(scheme)
	_ = ekscontrolplanev1.AddToScheme(scheme)
	_ = ekscontrolplanev1beta1.AddToScheme(scheme)
	_ = rosacontrolplanev1.AddToScheme(scheme)
	_ = infrav1.AddToScheme(scheme)
	_ = infrav1beta1.AddToScheme(scheme)
	_ = expinfrav1beta1.AddToScheme(scheme)
	_ = expinfrav1.AddToScheme(scheme)
	// +kubebuilder:scaffold:scheme
}

var (
	enableLeaderElection        bool
	leaderElectionLeaseDuration time.Duration
	leaderElectionRenewDeadline time.Duration
	leaderElectionRetryPeriod   time.Duration
	leaderElectionNamespace     string
	watchNamespace              string
	watchFilterValue            string
	profilerAddress             string
	awsClusterConcurrency       int
	instanceStateConcurrency    int
	awsMachineConcurrency       int
	waitInfraPeriod             time.Duration
	syncPeriod                  time.Duration
	webhookPort                 int
	webhookCertDir              string
	healthAddr                  string
	serviceEndpoints            string

	// maxEKSSyncPeriod is the maximum allowed duration for the sync-period flag when using EKS. It is set to 10 minutes
	// because during resync it will create a new AWS auth token which can a maximum life of 15 minutes and this ensures
	// the token (and kubeconfig secret) is refreshed before token expiration.
	maxEKSSyncPeriod         = time.Minute * 10
	errMaxSyncPeriodExceeded = errors.New("sync period greater than maximum allowed")
	errEKSInvalidFlags       = errors.New("invalid EKS flag combination")

	logOptions         = logs.NewOptions()
	diagnosticsOptions = flags.DiagnosticsOptions{}
)

// Add RBAC for the authorized diagnostics endpoint.
// +kubebuilder:rbac:groups=authentication.k8s.io,resources=tokenreviews,verbs=create
// +kubebuilder:rbac:groups=authorization.k8s.io,resources=subjectaccessreviews,verbs=create

func main() {
	initFlags(pflag.CommandLine)
	pflag.CommandLine.AddGoFlagSet(flag.CommandLine)
	pflag.Parse()

	if err := v1.ValidateAndApply(logOptions, nil); err != nil {
		setupLog.Error(err, "unable to validate and apply log options")
		os.Exit(1)
	}
	ctrl.SetLogger(klog.Background())

	diagnosticsOpts := flags.GetDiagnosticsOptions(diagnosticsOptions)

	var watchNamespaces map[string]cache.Config
	if watchNamespace != "" {
		setupLog.Info("Watching cluster-api objects only in namespace for reconciliation", "namespace", watchNamespace)
		watchNamespaces = map[string]cache.Config{
			watchNamespace: {},
		}
	}

	if profilerAddress != "" {
		setupLog.Info("Profiler listening for requests", "profiler-address", profilerAddress)
		go func() {
			server := &http.Server{
				Addr:              profilerAddress,
				ReadHeaderTimeout: 3 * time.Second,
			}
			err := server.ListenAndServe()
			if err != nil {
				setupLog.Error(err, "listen and serve error")
			}
		}()
	}

	// Machine and cluster operations can create enough events to trigger the event recorder spam filter
	// Setting the burst size higher ensures all events will be recorded and submitted to the API
	broadcaster := cgrecord.NewBroadcasterWithCorrelatorOptions(cgrecord.CorrelatorOptions{
		BurstSize: 100,
	})

	ctx := ctrl.SetupSignalHandler()

	restConfig := ctrl.GetConfigOrDie()
	restConfig.UserAgent = "cluster-api-provider-aws-controller"
	mgr, err := ctrl.NewManager(restConfig, ctrl.Options{
		Scheme:                     scheme,
		Metrics:                    diagnosticsOpts,
		LeaderElection:             enableLeaderElection,
		LeaseDuration:              &leaderElectionLeaseDuration,
		RenewDeadline:              &leaderElectionRenewDeadline,
		RetryPeriod:                &leaderElectionRetryPeriod,
		LeaderElectionResourceLock: resourcelock.LeasesResourceLock,
		LeaderElectionID:           "controller-leader-elect-capa",
		LeaderElectionNamespace:    leaderElectionNamespace,
		Cache: cache.Options{
			DefaultNamespaces: watchNamespaces,
			SyncPeriod:        &syncPeriod,
		},
		WebhookServer: webhook.NewServer(webhook.Options{
			Port:    webhookPort,
			CertDir: webhookCertDir,
		}),
		EventBroadcaster:       broadcaster,
		HealthProbeBindAddress: healthAddr,
	})
	if err != nil {
		setupLog.Error(err, "unable to start manager")
		os.Exit(1)
	}

	// Initialize event recorder.
	record.InitFromRecorder(mgr.GetEventRecorderFor("aws-controller"))

	setupLog.Info(fmt.Sprintf("feature gates: %+v\n", feature.Gates))

	externalResourceGC := false
	alternativeGCStrategy := false
	if feature.Gates.Enabled(feature.ExternalResourceGC) {
		setupLog.Info("enabling external resource garbage collection")
		externalResourceGC = true
		if feature.Gates.Enabled(feature.AlternativeGCStrategy) {
			setupLog.Info("enabling alternative garbage collection strategy")
			alternativeGCStrategy = true
		}
	}

	if feature.Gates.Enabled(feature.BootstrapFormatIgnition) {
		setupLog.Info("Enabling Ignition support for machine bootstrap data")
	}

	// Parse service endpoints.
	awsServiceEndpoints, err := endpoints.ParseFlag(serviceEndpoints)
	if err != nil {
		setupLog.Error(err, "unable to parse service endpoints", "controller", "AWSCluster")
		os.Exit(1)
	}

	setupReconcilersAndWebhooks(ctx, mgr, awsServiceEndpoints, externalResourceGC, alternativeGCStrategy)
	if feature.Gates.Enabled(feature.EKS) {
		setupEKSReconcilersAndWebhooks(ctx, mgr, awsServiceEndpoints, externalResourceGC, alternativeGCStrategy, waitInfraPeriod)
	}

	if feature.Gates.Enabled(feature.ROSA) {
		setupLog.Debug("enabling ROSA control plane controller")
		if err := (&rosacontrolplanecontrollers.ROSAControlPlaneReconciler{
			Client:           mgr.GetClient(),
			WatchFilterValue: watchFilterValue,
			WaitInfraPeriod:  waitInfraPeriod,
			Endpoints:        awsServiceEndpoints,
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "ROSAControlPlane")
			os.Exit(1)
		}

		setupLog.Debug("enabling ROSA cluster controller")
		if err := (&controllers.ROSAClusterReconciler{
			Client:           mgr.GetClient(),
			Recorder:         mgr.GetEventRecorderFor("rosacluster-controller"),
			WatchFilterValue: watchFilterValue,
			Endpoints:        awsServiceEndpoints,
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "ROSACluster")
			os.Exit(1)
		}

		setupLog.Debug("enabling ROSA machinepool controller")
		if err := (&expcontrollers.ROSAMachinePoolReconciler{
			Client:           mgr.GetClient(),
			Recorder:         mgr.GetEventRecorderFor("rosamachinepool-controller"),
			WatchFilterValue: watchFilterValue,
			Endpoints:        awsServiceEndpoints,
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "ROSAMachinePool")
			os.Exit(1)
		}

		if err := (&rosacontrolplanev1.ROSAControlPlane{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "ROSAControlPlane")
			os.Exit(1)
		}

		if err := (&expinfrav1.ROSAMachinePool{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "ROSAMachinePool")
			os.Exit(1)
		}
	}

	// +kubebuilder:scaffold:builder

	if err := mgr.AddReadyzCheck("webhook", mgr.GetWebhookServer().StartedChecker()); err != nil {
		setupLog.Error(err, "unable to create ready check")
		os.Exit(1)
	}

	if err := mgr.AddHealthzCheck("webhook", mgr.GetWebhookServer().StartedChecker()); err != nil {
		setupLog.Error(err, "unable to create health check")
		os.Exit(1)
	}

	setupLog.Info("starting manager", "version", version.Get().String())
	if err := mgr.Start(ctx); err != nil {
		setupLog.Error(err, "problem running manager")
		os.Exit(1)
	}
}

func setupReconcilersAndWebhooks(ctx context.Context, mgr ctrl.Manager, awsServiceEndpoints []scope.ServiceEndpoint,
	externalResourceGC, alternativeGCStrategy bool,
) {
	if err := (&controllers.AWSMachineReconciler{
		Client:                       mgr.GetClient(),
		Log:                          ctrl.Log.WithName("controllers").WithName("AWSMachine"),
		Recorder:                     mgr.GetEventRecorderFor("awsmachine-controller"),
		Endpoints:                    awsServiceEndpoints,
		WatchFilterValue:             watchFilterValue,
		TagUnmanagedNetworkResources: feature.Gates.Enabled(feature.TagUnmanagedNetworkResources),
	}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsMachineConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "AWSMachine")
		os.Exit(1)
	}

	if err := (&controllers.AWSClusterReconciler{
		Client:                       mgr.GetClient(),
		Recorder:                     mgr.GetEventRecorderFor("awscluster-controller"),
		Endpoints:                    awsServiceEndpoints,
		WatchFilterValue:             watchFilterValue,
		ExternalResourceGC:           externalResourceGC,
		AlternativeGCStrategy:        alternativeGCStrategy,
		TagUnmanagedNetworkResources: feature.Gates.Enabled(feature.TagUnmanagedNetworkResources),
	}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "AWSCluster")
		os.Exit(1)
	}

	if feature.Gates.Enabled(feature.MachinePool) {
		setupLog.Debug("enabling machine pool controller and webhook")
		if err := (&expcontrollers.AWSMachinePoolReconciler{
			Client:                       mgr.GetClient(),
			Recorder:                     mgr.GetEventRecorderFor("awsmachinepool-controller"),
			WatchFilterValue:             watchFilterValue,
			TagUnmanagedNetworkResources: feature.Gates.Enabled(feature.TagUnmanagedNetworkResources),
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: instanceStateConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "AWSMachinePool")
			os.Exit(1)
		}

		if err := (&expinfrav1.AWSMachinePool{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "AWSMachinePool")
			os.Exit(1)
		}
	}

	if feature.Gates.Enabled(feature.EventBridgeInstanceState) {
		setupLog.Info("EventBridge notifications enabled. enabling AWSInstanceStateController")
		if err := (&instancestate.AwsInstanceStateReconciler{
			Client:           mgr.GetClient(),
			Log:              ctrl.Log.WithName("controllers").WithName("AWSInstanceStateController"),
			Endpoints:        awsServiceEndpoints,
			WatchFilterValue: watchFilterValue,
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: instanceStateConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "AWSInstanceStateController")
			os.Exit(1)
		}
	}

	if feature.Gates.Enabled(feature.AutoControllerIdentityCreator) {
		setupLog.Info("AutoControllerIdentityCreator enabled")
		if err := (&controlleridentitycreator.AWSControllerIdentityReconciler{
			Client:           mgr.GetClient(),
			Log:              ctrl.Log.WithName("controllers").WithName("AWSControllerIdentity"),
			Endpoints:        awsServiceEndpoints,
			WatchFilterValue: watchFilterValue,
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "AWSControllerIdentity")
			os.Exit(1)
		}
	}

	if err := (&infrav1.AWSMachineTemplateWebhook{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSMachineTemplate")
		os.Exit(1)
	}
	if err := (&infrav1.AWSCluster{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSCluster")
		os.Exit(1)
	}
	if err := (&infrav1.AWSClusterTemplate{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSClusterTemplate")
		os.Exit(1)
	}
	if err := (&infrav1.AWSClusterControllerIdentity{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSClusterControllerIdentity")
		os.Exit(1)
	}
	if err := (&infrav1.AWSClusterRoleIdentity{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSClusterRoleIdentity")
		os.Exit(1)
	}
	if err := (&infrav1.AWSClusterStaticIdentity{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSClusterStaticIdentity")
		os.Exit(1)
	}
	if err := (&infrav1.AWSMachine{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSMachine")
		os.Exit(1)
	}
}

func setupEKSReconcilersAndWebhooks(ctx context.Context, mgr ctrl.Manager, awsServiceEndpoints []scope.ServiceEndpoint,
	externalResourceGC, alternativeGCStrategy bool, waitInfraPeriod time.Duration,
) {
	setupLog.Info("enabling EKS controllers and webhooks")

	if syncPeriod > maxEKSSyncPeriod {
		setupLog.Error(errMaxSyncPeriodExceeded, "failed to enable EKS", "max-sync-period", maxEKSSyncPeriod, "syn-period", syncPeriod)
		os.Exit(1)
	}

	enableIAM := feature.Gates.Enabled(feature.EKSEnableIAM)
	allowAddRoles := feature.Gates.Enabled(feature.EKSAllowAddRoles)
	setupLog.Debug("EKS IAM role creation", "enabled", enableIAM)
	setupLog.Debug("EKS IAM additional roles", "enabled", allowAddRoles)
	if allowAddRoles && !enableIAM {
		setupLog.Error(errEKSInvalidFlags, "cannot use EKSAllowAddRoles flag without EKSEnableIAM")
		os.Exit(1)
	}

	setupLog.Debug("enabling EKS control plane controller")
	if err := (&ekscontrolplanecontrollers.AWSManagedControlPlaneReconciler{
		Client:                       mgr.GetClient(),
		EnableIAM:                    enableIAM,
		AllowAdditionalRoles:         allowAddRoles,
		Endpoints:                    awsServiceEndpoints,
		WatchFilterValue:             watchFilterValue,
		ExternalResourceGC:           externalResourceGC,
		AlternativeGCStrategy:        alternativeGCStrategy,
		WaitInfraPeriod:              waitInfraPeriod,
		TagUnmanagedNetworkResources: feature.Gates.Enabled(feature.TagUnmanagedNetworkResources),
	}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "AWSManagedControlPlane")
		os.Exit(1)
	}

	setupLog.Debug("enabling EKS bootstrap controller")
	if err := (&eksbootstrapcontrollers.EKSConfigReconciler{
		Client:           mgr.GetClient(),
		WatchFilterValue: watchFilterValue,
	}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "EKSConfig")
		os.Exit(1)
	}

	setupLog.Debug("enabling EKS managed cluster controller")
	if err := (&controllers.AWSManagedClusterReconciler{
		Client:           mgr.GetClient(),
		Recorder:         mgr.GetEventRecorderFor("awsmanagedcluster-controller"),
		WatchFilterValue: watchFilterValue,
	}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
		setupLog.Error(err, "unable to create controller", "controller", "AWSManagedCluster")
		os.Exit(1)
	}

	if feature.Gates.Enabled(feature.EKSFargate) {
		setupLog.Debug("enabling EKS fargate profile controller")
		if err := (&expcontrollers.AWSFargateProfileReconciler{
			Client:           mgr.GetClient(),
			Recorder:         mgr.GetEventRecorderFor("awsfargateprofile-reconciler"),
			EnableIAM:        enableIAM,
			Endpoints:        awsServiceEndpoints,
			WatchFilterValue: watchFilterValue,
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: awsClusterConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "AWSFargateProfile")
		}

		if err := (&expinfrav1.AWSFargateProfile{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "AWSFargateProfile")
			os.Exit(1)
		}
	}

	if feature.Gates.Enabled(feature.MachinePool) {
		setupLog.Debug("enabling EKS managed machine pool controller")
		if err := (&expcontrollers.AWSManagedMachinePoolReconciler{
			AllowAdditionalRoles:         allowAddRoles,
			Client:                       mgr.GetClient(),
			EnableIAM:                    enableIAM,
			Endpoints:                    awsServiceEndpoints,
			Recorder:                     mgr.GetEventRecorderFor("awsmanagedmachinepool-reconciler"),
			WatchFilterValue:             watchFilterValue,
			TagUnmanagedNetworkResources: feature.Gates.Enabled(feature.TagUnmanagedNetworkResources),
		}).SetupWithManager(ctx, mgr, controller.Options{MaxConcurrentReconciles: instanceStateConcurrency, RecoverPanic: ptr.To[bool](true)}); err != nil {
			setupLog.Error(err, "unable to create controller", "controller", "AWSManagedMachinePool")
			os.Exit(1)
		}

		if err := (&expinfrav1.AWSManagedMachinePool{}).SetupWebhookWithManager(mgr); err != nil {
			setupLog.Error(err, "unable to create webhook", "webhook", "AWSManagedMachinePool")
			os.Exit(1)
		}
	}

	if err := (&ekscontrolplanev1.AWSManagedControlPlane{}).SetupWebhookWithManager(mgr); err != nil {
		setupLog.Error(err, "unable to create webhook", "webhook", "AWSManagedControlPlane")
		os.Exit(1)
	}
}

func initFlags(fs *pflag.FlagSet) {
	fs.BoolVar(
		&enableLeaderElection,
		"leader-elect",
		false,
		"Enable leader election for controller manager. Enabling this will ensure there is only one active controller manager.",
	)

	fs.DurationVar(
		&leaderElectionLeaseDuration,
		"leader-elect-lease-duration",
		15*time.Second,
		"Interval at which non-leader candidates will wait to force acquire leadership (duration string)",
	)

	fs.DurationVar(
		&leaderElectionRenewDeadline,
		"leader-elect-renew-deadline",
		10*time.Second,
		"Duration that the leading controller manager will retry refreshing leadership before giving up (duration string)",
	)

	fs.DurationVar(
		&leaderElectionRetryPeriod,
		"leader-elect-retry-period",
		2*time.Second,
		"Duration the LeaderElector clients should wait between tries of actions (duration string)",
	)

	fs.StringVar(
		&watchNamespace,
		"namespace",
		"",
		"Namespace that the controller watches to reconcile cluster-api objects. If unspecified, the controller watches for cluster-api objects across all namespaces.",
	)

	fs.StringVar(
		&leaderElectionNamespace,
		"leader-elect-namespace",
		"",
		"Namespace that the controller performs leader election in. If unspecified, the controller will discover which namespace it is running in.",
	)

	fs.StringVar(
		&profilerAddress,
		"profiler-address",
		"",
		"Bind address to expose the pprof profiler (e.g. localhost:6060)",
	)

	fs.IntVar(&awsClusterConcurrency,
		"awscluster-concurrency",
		5,
		"Number of AWSClusters to process simultaneously",
	)

	fs.IntVar(&instanceStateConcurrency,
		"instance-state-concurrency",
		5,
		"Number of concurrent watches for instance state changes",
	)

	fs.IntVar(&awsMachineConcurrency,
		"awsmachine-concurrency",
		10,
		"Number of AWSMachines to process simultaneously",
	)

	fs.DurationVar(&waitInfraPeriod,
		"wait-infra-period",
		1*time.Minute,
		"The minimum interval at which reconcile process wait for infrastructure to be ready.",
	)

	fs.DurationVar(&syncPeriod,
		"sync-period",
		10*time.Minute,
		fmt.Sprintf("The minimum interval at which watched resources are reconciled. If EKS is enabled the maximum allowed is %s", maxEKSSyncPeriod),
	)

	fs.IntVar(&webhookPort,
		"webhook-port",
		9443,
		"Webhook Server port.",
	)

	fs.StringVar(&webhookCertDir, "webhook-cert-dir", "/tmp/k8s-webhook-server/serving-certs/",
		"Webhook cert dir, only used when webhook-port is specified.")

	fs.StringVar(&healthAddr,
		"health-addr",
		":9440",
		"The address the health endpoint binds to.",
	)

	fs.StringVar(&serviceEndpoints,
		"service-endpoints",
		"",
		"Set custom AWS service endpoins in semi-colon separated format: ${SigningRegion1}:${ServiceID1}=${URL},${ServiceID2}=${URL};${SigningRegion2}...",
	)

	fs.StringVar(
		&watchFilterValue,
		"watch-filter",
		"",
		fmt.Sprintf("Label value that the controller watches to reconcile cluster-api objects. Label key is always %s. If unspecified, the controller watches for all cluster-api objects.", clusterv1.WatchLabel),
	)

	logs.AddFlags(fs, logs.SkipLoggingConfigurationFlags())
	v1.AddFlags(logOptions, fs)

	feature.MutableGates.AddFlag(fs)

	flags.AddDiagnosticsOptions(fs, &diagnosticsOptions)
}