Merge pull request #1 from kkb0318/feature/eks

EKS support

api/v1alpha1/irsasetup_types.go

@@ -33,17 +33,34 @@ type IRSASetupSpec struct {
 	// +required
 	Cleanup bool `json:"cleanup"`
 
-	// Mode (Optional, Future Feature) Defines how the controller will operate once this feature is enabled.
+	// Mode specifies the operation mode of the controller.
-	// Currently unused. Planned values:
+	// Possible values:
 	//   - "selfhosted": For self-managed Kubernetes clusters.
 	//   - "eks": For Amazon EKS environments.
-	Mode string `json:"mode,omitempty"`
+	// Default: "selfhosted"
+	Mode SetupMode `json:"mode,omitempty"`
 
 	// Discovery configures the IdP Discovery process, essential for setting up IRSA by locating
 	// the OIDC provider information.
-	Discovery Discovery `json:"discovery"`
+	// Only applicable when Mode is "selfhosted".
+	// +optional
+	Discovery Discovery `json:"discovery,omitempty"`
+
+	// IamOIDCProvider configures IAM OIDC IamOIDCProvider Name
+	// Only applicable when Mode is "eks".
+	IamOIDCProvider string `json:"iamOIDCProvider,omitempty"`
 }
 
+// +kubebuilder:default=selfhosted
+// +kubebuilder:validation:Enum=selfhosted;eks
+// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="Value is immutable"
+type SetupMode string
+
+const (
+	ModeSelfhosted = SetupMode("selfhosted")
+	ModeEks        = SetupMode("eks")
+)
+
 // Discovery holds the configuration for IdP Discovery, which is crucial for locating
 // the OIDC provider in a self-hosted environment.
 type Discovery struct {
@@ -62,39 +79,39 @@ type S3Discovery struct {
 
 // IRSASetupStatus defines the observed state of IRSASetup
 type IRSASetupStatus struct {
-	SelfHostedSetup []metav1.Condition `json:"selfHostedSetup,omitempty"`
+	Conditions []metav1.Condition `json:"conditions,omitempty"`
 }
 
-// GetSelfhostedStatusConditions returns a pointer to the Status.Conditions slice
+// GetStatusConditions returns a pointer to the Status.Conditions slice
-func (in *IRSASetup) GetSelfhostedStatusConditions() *[]metav1.Condition {
+func (in *IRSASetup) GetStatusConditions() *[]metav1.Condition {
-	return &in.Status.SelfHostedSetup
+	return &in.Status.Conditions
 }
 
-func SetupSelfHostedStatusReady(irsa IRSASetup, reason, message string) IRSASetup {
+func SetupStatusReady(irsa IRSASetup, reason, message string) IRSASetup {
 	newCondition := metav1.Condition{
 		Type:    ReadyCondition,
 		Status:  metav1.ConditionTrue,
 		Reason:  reason,
 		Message: message,
 	}
-	apimeta.SetStatusCondition(irsa.GetSelfhostedStatusConditions(), newCondition)
+	apimeta.SetStatusCondition(irsa.GetStatusConditions(), newCondition)
 	return irsa
 }
 
-func SelfHostedStatusNotReady(irsa IRSASetup, reason, message string) IRSASetup {
+func StatusNotReady(irsa IRSASetup, reason, message string) IRSASetup {
 	newCondition := metav1.Condition{
 		Type:    ReadyCondition,
 		Status:  metav1.ConditionFalse,
 		Reason:  reason,
 		Message: message,
 	}
-	apimeta.SetStatusCondition(irsa.GetSelfhostedStatusConditions(), newCondition)
+	apimeta.SetStatusCondition(irsa.GetStatusConditions(), newCondition)
 	return irsa
 }
 
-// SelfHostedReadyStatus
+// ReadyStatus
-func SelfHostedReadyStatus(irsa IRSASetup) *metav1.Condition {
+func ReadyStatus(irsa IRSASetup) *metav1.Condition {
-	if c := apimeta.FindStatusCondition(irsa.Status.SelfHostedSetup, ReadyCondition); c != nil {
+	if c := apimeta.FindStatusCondition(irsa.Status.Conditions, ReadyCondition); c != nil {
 		return c
 	}
 	return nil
@@ -113,22 +130,30 @@ func HasConditionReason(cond *metav1.Condition, reasons ...string) bool {
 	return false
 }
 
-func IsSelfHostedReadyConditionTrue(irsa IRSASetup) bool {
+func IsReadyConditionTrue(irsa IRSASetup) bool {
-	return apimeta.IsStatusConditionTrue(irsa.Status.SelfHostedSetup, ReadyCondition)
+	return apimeta.IsStatusConditionTrue(irsa.Status.Conditions, ReadyCondition)
 }
 
-type SelfHostedReason string
+type SelfhostedConditionReason string
 
 const (
-	SelfHostedReasonFailedWebhook SelfHostedReason = "SelfHostedSetupFailedWebhookCreation"
+	SelfHostedReasonFailedWebhook SelfhostedConditionReason = "SelfHostedSetupFailedWebhookCreation"
-	SelfHostedReasonFailedOidc    SelfHostedReason = "SelfHostedSetupFailedOidcCreation"
+	SelfHostedReasonFailedOidc    SelfhostedConditionReason = "SelfHostedSetupFailedOidcCreation"
-	SelfHostedReasonFailedKeys    SelfHostedReason = "SelfHostedSetupFailedKeysCreation"
+	SelfHostedReasonFailedIssuer  SelfhostedConditionReason = "SelfHostedSetupFailedIssuer"
-	SelfHostedReasonReady         SelfHostedReason = "SelfHostedSetupReady"
+	SelfHostedReasonFailedKeys    SelfhostedConditionReason = "SelfHostedSetupFailedKeysCreation"
+	SelfHostedReasonReady         SelfhostedConditionReason = "SelfHostedSetupReady"
+)
+
+type EksConditionReason string
+
+const (
+	EksNotReady    EksConditionReason = "EksOIDCNotReady"
+	EksReasonReady EksConditionReason = "EksOIDCSetupReady"
 )
 
 //+kubebuilder:object:root=true
 //+kubebuilder:subresource:status
-//+kubebuilder:printcolumn:name="SelfHostedReady",type="string",JSONPath=".status.selfHostedSetup[?(@.type==\"Ready\")].status",description=""
+//+kubebuilder:printcolumn:name="Ready",type="string",JSONPath=".status.conditions[?(@.type==\"Ready\")].status",description=""
 
 // IRSASetup represents a configuration for setting up IAM Roles for Service Accounts (IRSA) in a Kubernetes cluster.
 type IRSASetup struct {

api/v1alpha1/zz_generated.deepcopy.go

@@ -213,8 +213,8 @@ func (in *IRSASetupSpec) DeepCopy() *IRSASetupSpec {
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *IRSASetupStatus) DeepCopyInto(out *IRSASetupStatus) {
 	*out = *in
-	if in.SelfHostedSetup != nil {
+	if in.Conditions != nil {
-		in, out := &in.SelfHostedSetup, &out.SelfHostedSetup
+		in, out := &in.Conditions, &out.Conditions
 		*out = make([]v1.Condition, len(*in))
 		for i := range *in {
 			(*in)[i].DeepCopyInto(&(*out)[i])

charts/irsa-manager/crds/irsasetup-crd.yaml

@@ -14,8 +14,8 @@ spec:
   scope: Namespaced
   versions:
   - additionalPrinterColumns:
-    - jsonPath: .status.selfHostedSetup[?(@.type=="Ready")].status
+    - jsonPath: .status.conditions[?(@.type=="Ready")].status
-      name: SelfHostedReady
+      name: Ready
       type: string
     name: v1alpha1
     schema:
@@ -52,6 +52,7 @@ spec:
                 description: |-
                   Discovery configures the IdP Discovery process, essential for setting up IRSA by locating
                   the OIDC provider information.
+                  Only applicable when Mode is "selfhosted".
                 properties:
                   s3:
                     description: S3 specifies the AWS S3 bucket details where the
@@ -70,21 +71,32 @@ spec:
                     - region
                     type: object
                 type: object
+              iamOIDCProvider:
+                description: |-
+                  IamOIDCProvider configures IAM OIDC IamOIDCProvider Name
+                  Only applicable when Mode is "eks".
+                type: string
               mode:
                 description: |-
-                  Mode (Optional, Future Feature) Defines how the controller will operate once this feature is enabled.
+                  Mode specifies the operation mode of the controller.
-                  Currently unused. Planned values:
+                  Possible values:
                     - "selfhosted": For self-managed Kubernetes clusters.
                     - "eks": For Amazon EKS environments.
+                  Default: "selfhosted"
+                enum:
+                - selfhosted
+                - eks
                 type: string
+                x-kubernetes-validations:
+                - message: Value is immutable
+                  rule: self == oldSelf
             required:
             - cleanup
-            - discovery
             type: object
           status:
             description: IRSASetupStatus defines the observed state of IRSASetup
             properties:
-              selfHostedSetup:
+              conditions:
                 items:
                   description: "Condition contains details for one aspect of the current
                     state of this API Resource.\n---\nThis struct is intended for

charts/irsa-manager/templates/deployment.yaml

@@ -71,5 +71,7 @@ spec:
           | nindent 10 }}
       securityContext:
         runAsNonRoot: true
+        seccompProfile:
+          type: RuntimeDefault
       serviceAccountName: {{ include "irsa-manager.fullname" . }}-controller-manager
       terminationGracePeriodSeconds: 10

config/crd/bases/irsa-manager.kkb0318.github.io_irsasetups.yaml

@@ -15,8 +15,8 @@ spec:
   scope: Namespaced
   versions:
   - additionalPrinterColumns:
-    - jsonPath: .status.selfHostedSetup[?(@.type=="Ready")].status
+    - jsonPath: .status.conditions[?(@.type=="Ready")].status
-      name: SelfHostedReady
+      name: Ready
       type: string
     name: v1alpha1
     schema:
@@ -53,6 +53,7 @@ spec:
                 description: |-
                   Discovery configures the IdP Discovery process, essential for setting up IRSA by locating
                   the OIDC provider information.
+                  Only applicable when Mode is "selfhosted".
                 properties:
                   s3:
                     description: S3 specifies the AWS S3 bucket details where the
@@ -71,21 +72,32 @@ spec:
                     - region
                     type: object
                 type: object
+              iamOIDCProvider:
+                description: |-
+                  IamOIDCProvider configures IAM OIDC IamOIDCProvider Name
+                  Only applicable when Mode is "eks".
+                type: string
               mode:
                 description: |-
-                  Mode (Optional, Future Feature) Defines how the controller will operate once this feature is enabled.
+                  Mode specifies the operation mode of the controller.
-                  Currently unused. Planned values:
+                  Possible values:
                     - "selfhosted": For self-managed Kubernetes clusters.
                     - "eks": For Amazon EKS environments.
+                  Default: "selfhosted"
+                enum:
+                - selfhosted
+                - eks
                 type: string
+                x-kubernetes-validations:
+                - message: Value is immutable
+                  rule: self == oldSelf
             required:
             - cleanup
-            - discovery
             type: object
           status:
             description: IRSASetupStatus defines the observed state of IRSASetup
             properties:
-              selfHostedSetup:
+              conditions:
                 items:
                   description: "Condition contains details for one aspect of the current
                     state of this API Resource.\n---\nThis struct is intended for

config/manager/kustomization.yaml

@@ -1,2 +1,8 @@
 resources:
-  - manager.yaml
+- manager.yaml
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+images:
+- name: controller
+  newName: ghcr.io/kkb0318/irsa-manager
+  newTag: latest

docs/api.md

@@ -31,6 +31,8 @@ _Appears in:_
 | `s3` _[S3Discovery](#s3discovery)_ | S3 specifies the AWS S3 bucket details where the OIDC provider's discovery information is hosted. |  |  |
 
 
+
+
 #### IRSA
 
 
@@ -102,8 +104,9 @@ _Appears in:_
 | Field | Description | Default | Validation |
 | --- | --- | --- | --- |
 | `cleanup` _boolean_ | Cleanup, when enabled, allows the IRSASetup to perform garbage collection<br />of resources that are no longer needed or managed. |  |  |
-| `mode` _string_ | Mode (Optional, Future Feature) Defines how the controller will operate once this feature is enabled.<br />Currently unused. Planned values:<br />  - "selfhosted": For self-managed Kubernetes clusters.<br />  - "eks": For Amazon EKS environments. |  |  |
+| `mode` _[SetupMode](#setupmode)_ | Mode specifies the operation mode of the controller.<br />Possible values:<br />  - "selfhosted": For self-managed Kubernetes clusters.<br />  - "eks": For Amazon EKS environments.<br />Default: "selfhosted" |  | Enum: [selfhosted eks] <br /> |
-| `discovery` _[Discovery](#discovery)_ | Discovery configures the IdP Discovery process, essential for setting up IRSA by locating<br />the OIDC provider information. |  |  |
+| `discovery` _[Discovery](#discovery)_ | Discovery configures the IdP Discovery process, essential for setting up IRSA by locating<br />the OIDC provider information.<br />Only applicable when Mode is "selfhosted". |  |  |
+| `iamOIDCProvider` _string_ | IamOIDCProvider configures IAM OIDC IamOIDCProvider Name<br />Only applicable when Mode is "eks". |  |  |
 
 
 
@@ -164,3 +167,17 @@ _Appears in:_
 
 
 
+#### SetupMode
+
+_Underlying type:_ _string_
+
+
+
+_Validation:_
+- Enum: [selfhosted eks]
+
+_Appears in:_
+- [IRSASetupSpec](#irsasetupspec)
+
+
+

examples/eks.yaml

@@ -0,0 +1,9 @@
+apiVersion: irsa-manager.kkb0318.github.io/v1alpha1
+kind: IRSASetup
+metadata:
+  name: irsa-init
+  namespace: irsa-manager-system
+spec:
+  mode: eks
+  cleanup: true
+  iamOIDCProvider: "oidc.eks.<region>.amazonaws.com/id/<id>"

examples/irsa.yaml

@@ -6,11 +6,11 @@ metadata:
 spec:
   cleanup: true
   serviceAccount:
-    name: irsa1-sa
+    name: irsa111-sa
     namespaces:
       - kube-system
       - default
   iamRole:
-    name: irsa1-role
+    name: irsa111-role
   iamPolicies:
     - AmazonS3FullAccess

internal/controller/irsa_controller.go

@@ -51,13 +51,6 @@ type IRSAReconciler struct {
 
 // Reconcile is part of the main kubernetes reconciliation loop which aims to
 // move the current state of the cluster closer to the desired state.
-// TODO(user): Modify the Reconcile function to compare the state specified by
-// the IRSA object against the actual cluster state, and then
-// perform operations to make the cluster state reflect the state specified by
-// the user.
-//
-// For more details, check Reconcile and its Result here:
-// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.16.3/pkg/reconcile
 func (r *IRSAReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
 	log := ctrllog.FromContext(ctx)
 	obj := &irsav1alpha1.IRSA{}
@@ -152,7 +145,7 @@ func (r *IRSAReconciler) reconcile(ctx context.Context, obj *irsav1alpha1.IRSA,
 		return fmt.Errorf("error converting to IRSASetup for %s: %v", list.Items[0].GetName(), err)
 	}
 	serviceAccount := obj.Spec.ServiceAccount
-	issuerMeta, err := issuer.NewS3IssuerMeta(&irsaSetup.Spec.Discovery.S3)
+	issuerMeta, err := issuer.NewOIDCIssuerMeta(irsaSetup)
 	if err != nil {
 		return err
 	}

internal/controller/irsa_controller_test.go

@@ -211,7 +211,7 @@ var _ = Describe("IRSA Controller", func() {
 							f:              newServiceAccount,
 						},
 					)
-					f := createCallBack(ctx, r, typeNamespacedName, obj)
+					f := createCallBackForFixingNamespace(ctx, r, typeNamespacedName, obj)
 
 					By("Add Namespace 'default'")
 					f(obj.Spec.ServiceAccount.Name, []string{"default", "kube-system"})
@@ -222,6 +222,75 @@ var _ = Describe("IRSA Controller", func() {
 						f:              newServiceAccount,
 					})
 
+					By("removing the custom resource for the Kind")
+					Eventually(func() error {
+						return k8sClient.Delete(ctx, obj)
+					}, timeout).Should(Succeed())
+					_, err = r.Reconcile(ctx, reconcile.Request{
+						NamespacedName: typeNamespacedName,
+					})
+					Expect(err).To(Not(HaveOccurred()))
+					for _, expect := range expected {
+						checkNoExist(expect)
+					}
+				},
+			},
+			{
+				name: "should update serviceaccount successfully with EKS mode",
+				obj: &irsav1alpha1.IRSA{
+					ObjectMeta: metav1.ObjectMeta{
+						Name:      "test-resource-eks-1",
+						Namespace: "default",
+					},
+					Spec: irsav1alpha1.IRSASpec{
+						Cleanup: true,
+						ServiceAccount: irsav1alpha1.IRSAServiceAccount{
+							Name: "sa-eks-1",
+							Namespaces: []string{
+								"kube-system",
+							},
+						},
+					},
+				},
+				irsaSetupObj: newMockIRSASetupForEKS(),
+				f: func(r *IRSAReconciler, obj *irsav1alpha1.IRSA) {
+					expected := []expectedResource{
+						{
+							NamespacedName: types.NamespacedName{Name: "sa-eks-1", Namespace: "kube-system"},
+							f:              newServiceAccount,
+						},
+						{
+							NamespacedName: types.NamespacedName{Name: "sa-eks-1", Namespace: "default"},
+							f:              newServiceAccount,
+						},
+					}
+
+					By("Reconciling the created resource")
+					typeNamespacedName := types.NamespacedName{
+						Name:      obj.Name,
+						Namespace: obj.Namespace,
+					}
+					_, err := r.Reconcile(ctx, reconcile.Request{
+						NamespacedName: typeNamespacedName,
+					})
+					Expect(err).NotTo(HaveOccurred())
+					checkExist(
+						expectedResource{
+							NamespacedName: types.NamespacedName{Name: "sa-eks-1", Namespace: "kube-system"},
+							f:              newServiceAccount,
+						},
+					)
+					f := createCallBackForFixingNamespace(ctx, r, typeNamespacedName, obj)
+
+					By("Add Namespace 'default'")
+					f(obj.Spec.ServiceAccount.Name, []string{"default", "kube-system"})
+					By("Remove Namespace 'kube-system'")
+					f(obj.Spec.ServiceAccount.Name, []string{"default"})
+					checkNoExist(expectedResource{
+						NamespacedName: types.NamespacedName{Name: "sa-eks-1", Namespace: "kube-system"},
+						f:              newServiceAccount,
+					})
+
 					By("removing the custom resource for the Kind")
 					Eventually(func() error {
 						return k8sClient.Delete(ctx, obj)
@@ -298,7 +367,20 @@ func newMockIRSASetup() *irsav1alpha1.IRSASetup {
 	}
 }
 
-func createCallBack(ctx context.Context, r *IRSAReconciler, typeNamespacedName types.NamespacedName, obj *irsav1alpha1.IRSA) func(name string, namespaces []string) {
+func newMockIRSASetupForEKS() *irsav1alpha1.IRSASetup {
+	return &irsav1alpha1.IRSASetup{
+		ObjectMeta: metav1.ObjectMeta{
+			Name:      "test",
+			Namespace: "default",
+		},
+		Spec: irsav1alpha1.IRSASetupSpec{
+			Mode:            irsav1alpha1.ModeEks,
+			IamOIDCProvider: "oidc.example",
+		},
+	}
+}
+
+func createCallBackForFixingNamespace(ctx context.Context, r *IRSAReconciler, typeNamespacedName types.NamespacedName, obj *irsav1alpha1.IRSA) func(name string, namespaces []string) {
 	return func(name string, namespaces []string) {
 		fixNamespacesAndReconcile(ctx, r, typeNamespacedName, obj, name, namespaces)
 	}

internal/controller/irsasetup_controller.go

@@ -27,6 +27,7 @@ import (
 
 	irsav1alpha1 "github.com/kkb0318/irsa-manager/api/v1alpha1"
 	awsclient "github.com/kkb0318/irsa-manager/internal/aws"
+	"github.com/kkb0318/irsa-manager/internal/eks"
 	"github.com/kkb0318/irsa-manager/internal/handler"
 	"github.com/kkb0318/irsa-manager/internal/issuer"
 	"github.com/kkb0318/irsa-manager/internal/kubernetes"
@@ -59,13 +60,6 @@ type IRSASetupReconciler struct {
 
 // Reconcile is part of the main kubernetes reconciliation loop which aims to
 // move the current state of the cluster closer to the desired state.
-// TODO(user): Modify the Reconcile function to compare the state specified by
-// the IRSASetup object against the actual cluster state, and then
-// perform operations to make the cluster state reflect the state specified by
-// the user.
-//
-// For more details, check Reconcile and its Result here:
-// - https://pkg.go.dev/sigs.k8s.io/controller-runtime@v0.16.3/pkg/reconcile
 func (r *IRSASetupReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {
 	log := ctrllog.FromContext(ctx)
 	obj := &irsav1alpha1.IRSASetup{}
@@ -104,7 +98,11 @@ func (r *IRSASetupReconciler) Reconcile(ctx context.Context, req ctrl.Request) (
 	}()
 
 	if !obj.DeletionTimestamp.IsZero() {
-		err = r.reconcileDelete(ctx, obj, kubeClient)
+		if obj.Spec.Mode == irsav1alpha1.ModeEks {
+			err = r.reconcileDeleteEks()
+		} else {
+			err = r.reconcileDeleteSelfhosted(ctx, obj, kubeClient)
+		}
 		if err != nil {
 			return ctrl.Result{}, err
 		}
@@ -125,11 +123,17 @@ func (r *IRSASetupReconciler) Reconcile(ctx context.Context, req ctrl.Request) (
 }
 
 func (r *IRSASetupReconciler) reconcile(ctx context.Context, obj *irsav1alpha1.IRSASetup, kubeClient *kubernetes.KubernetesClient) error {
-	err := reconcileSelfhosted(ctx, obj, r.AwsClient, kubeClient)
+	if obj.Spec.Mode == irsav1alpha1.ModeEks {
-	return err
+		return reconcileEks(ctx, obj)
+	}
+	return reconcileSelfhosted(ctx, obj, r.AwsClient, kubeClient)
 }
 
-func (r *IRSASetupReconciler) reconcileDelete(ctx context.Context, obj *irsav1alpha1.IRSASetup, kubeClient *kubernetes.KubernetesClient) error {
+func (r *IRSASetupReconciler) reconcileDeleteEks() error {
+	return nil
+}
+
+func (r *IRSASetupReconciler) reconcileDeleteSelfhosted(ctx context.Context, obj *irsav1alpha1.IRSASetup, kubeClient *kubernetes.KubernetesClient) error {
 	if !obj.Spec.Cleanup {
 		return nil
 	}
@@ -154,7 +158,7 @@ func (r *IRSASetupReconciler) reconcileDelete(ctx context.Context, obj *irsav1al
 	if err != nil {
 		return err
 	}
-	issuerMeta, err := issuer.NewS3IssuerMeta(&obj.Spec.Discovery.S3)
+	issuerMeta, err := issuer.NewOIDCIssuerMeta(obj)
 	if err != nil {
 		return err
 	}
@@ -172,7 +176,7 @@ func (r *IRSASetupReconciler) reconcileDelete(ctx context.Context, obj *irsav1al
 // - The function enforces a 'force update' strategy in case of failures related to kubernetes Secrets creation or OIDC setup. This means it starts from scratch to ensure all components are correctly configured.
 func reconcileSelfhosted(ctx context.Context, obj *irsav1alpha1.IRSASetup, awsClient awsclient.AwsClient, kubeClient *kubernetes.KubernetesClient) error {
 	log := ctrllog.FromContext(ctx)
-	if irsav1alpha1.IsSelfHostedReadyConditionTrue(*obj) {
+	if irsav1alpha1.IsReadyConditionTrue(*obj) {
 		// Selfhosted Setup have already succeeded
 		log.Info("the self-hosted resources have already set up")
 		return nil
@@ -205,20 +209,22 @@ func reconcileSelfhosted(ctx context.Context, obj *irsav1alpha1.IRSASetup, awsCl
 
 	// e is set only when an error occurs in an external dependency process and is reflected in the CRs status
 	var e error
-	var reason irsav1alpha1.SelfHostedReason
+	var reason irsav1alpha1.SelfhostedConditionReason
 	defer func() {
 		if e != nil {
-			*obj = irsav1alpha1.SelfHostedStatusNotReady(*obj, string(reason), e.Error())
+			*obj = irsav1alpha1.StatusNotReady(*obj, string(reason), e.Error())
 		}
 	}()
 
 	forceUpdate := irsav1alpha1.HasConditionReason(
-		irsav1alpha1.SelfHostedReadyStatus(*obj),
+		irsav1alpha1.ReadyStatus(*obj),
 		string(irsav1alpha1.SelfHostedReasonFailedKeys),
 		string(irsav1alpha1.SelfHostedReasonFailedOidc),
 	)
-	issuerMeta, err := issuer.NewS3IssuerMeta(&obj.Spec.Discovery.S3)
+	issuerMeta, err := issuer.NewOIDCIssuerMeta(obj)
 	if err != nil {
+		e = err
+		reason = irsav1alpha1.SelfHostedReasonFailedIssuer
 		return err
 	}
 	err = selfhosted.Execute(
@@ -253,11 +259,34 @@ func reconcileSelfhosted(ctx context.Context, obj *irsav1alpha1.IRSASetup, awsCl
 		reason = irsav1alpha1.SelfHostedReasonFailedWebhook
 		return err
 	}
-	*obj = irsav1alpha1.SetupSelfHostedStatusReady(*obj, string(irsav1alpha1.SelfHostedReasonReady), "successfully setup resources for self-hosted")
+	*obj = irsav1alpha1.SetupStatusReady(*obj, string(irsav1alpha1.SelfHostedReasonReady), "successfully setup resources for self-hosted")
 	log.Info("the self-hosted resources have successfully set up")
 	return nil
 }
 
+// reconcileEks iterates tasks for EKS mode.
+func reconcileEks(ctx context.Context, obj *irsav1alpha1.IRSASetup) error {
+	log := ctrllog.FromContext(ctx)
+	var reason irsav1alpha1.EksConditionReason
+
+	// e is set only when an error occurs in an external dependency process and is reflected in the CRs status
+	var e error
+	defer func() {
+		if e != nil {
+			*obj = irsav1alpha1.StatusNotReady(*obj, string(reason), e.Error())
+		}
+	}()
+	err := eks.Validate(obj)
+	if err != nil {
+		e = err
+		reason = irsav1alpha1.EksNotReady
+		return err
+	}
+	*obj = irsav1alpha1.SetupStatusReady(*obj, string(irsav1alpha1.EksReasonReady), "successfully setup for eks")
+	log.Info("The OIDC for EKS has been successfully set up")
+	return nil
+}
+
 func newOIDCIdpFactory(ctx context.Context, obj *irsav1alpha1.IRSASetup, jwk *selfhosted.JWK, awsClient awsclient.AwsClient) (selfhosted.OIDCIdPFactory, error) {
 	region := obj.Spec.Discovery.S3.Region
 	bucketName := obj.Spec.Discovery.S3.BucketName

internal/controller/irsasetup_controller_test.go

@@ -288,6 +288,42 @@ var _ = Describe("IRSASetup Controller", func() {
 					}
 				},
 			},
+			{
+				name: "EKS mode",
+				obj: &irsav1alpha1.IRSASetup{
+					ObjectMeta: metav1.ObjectMeta{
+						Name:      "test-resource-eks1",
+						Namespace: "default",
+					},
+					Spec: irsav1alpha1.IRSASetupSpec{
+						Cleanup:         false,
+						Mode:            irsav1alpha1.ModeEks,
+						IamOIDCProvider: "oidc.example",
+					},
+				},
+				f: func(r *IRSASetupReconciler, obj *irsav1alpha1.IRSASetup) {
+					typeNamespacedName := types.NamespacedName{
+						Name:      obj.Name,
+						Namespace: obj.Namespace,
+					}
+					_, err := r.Reconcile(ctx, reconcile.Request{
+						NamespacedName: typeNamespacedName,
+					})
+					Expect(err).NotTo(HaveOccurred())
+					_, err = r.Reconcile(ctx, reconcile.Request{
+						NamespacedName: typeNamespacedName,
+					})
+					Expect(err).To(Not(HaveOccurred()))
+					By("removing the custom resource (not cleanup)")
+					Eventually(func() error {
+						return k8sClient.Delete(ctx, obj)
+					}, timeout).Should(Succeed())
+					_, err = r.Reconcile(ctx, reconcile.Request{
+						NamespacedName: typeNamespacedName,
+					})
+					Expect(err).To(Not(HaveOccurred()))
+				},
+			},
 		}
 		for _, tt := range tests {
 			It(tt.name, func() {

internal/eks/validation.go

@@ -0,0 +1,14 @@
+package eks
+
+import (
+	"fmt"
+
+	irsav1alpha1 "github.com/kkb0318/irsa-manager/api/v1alpha1"
+)
+
+func Validate(obj *irsav1alpha1.IRSASetup) error {
+	if obj.Spec.IamOIDCProvider == "" {
+		return fmt.Errorf("IamOIDCProvider parameter must be set when Mode is 'eks'")
+	}
+	return nil
+}

internal/issuer/issuer.go

@@ -11,27 +11,52 @@ type OIDCIssuerMeta interface {
 	IssuerUrl() string
 }
 
-type S3IssuerMeta struct {
+type s3IssuerMeta struct {
 	region     string
 	bucketName string
 }
 
-func NewS3IssuerMeta(s3 *irsav1alpha1.S3Discovery) (*S3IssuerMeta, error) {
+func NewOIDCIssuerMeta(i *irsav1alpha1.IRSASetup) (OIDCIssuerMeta, error) {
+	if i.Spec.Mode == irsav1alpha1.ModeEks {
+		return newIamOIDCProviderIssuerMeta(i.Spec.IamOIDCProvider)
+	}
+	return newS3IssuerMeta(&i.Spec.Discovery.S3)
+}
+
+func newS3IssuerMeta(s3 *irsav1alpha1.S3Discovery) (*s3IssuerMeta, error) {
 	region := s3.Region
 	bucketName := s3.BucketName
 	if region == "" || bucketName == "" {
 		return nil, fmt.Errorf("s3 region and bucket name must not be empty. region: %s, bucketName: %s", region, bucketName)
 	}
-	return &S3IssuerMeta{region, bucketName}, nil
+	return &s3IssuerMeta{region, bucketName}, nil
 }
 
-func (i *S3IssuerMeta) IssuerHostPath() string {
+func (i *s3IssuerMeta) IssuerHostPath() string {
 	return fmt.Sprintf("s3-%s.amazonaws.com/%s", i.region, i.bucketName)
 }
 
 // IssuerUrl constructs the URL path for the OIDC issuer based on the provided AWS region and bucket name.
 // This utility function generates the expected host path for accessing the OIDC configuration stored in an S3 bucket.
-func (i *S3IssuerMeta) IssuerUrl() string {
+func (i *s3IssuerMeta) IssuerUrl() string {
-	return fmt.Sprintf("https://%s", i.
+	return fmt.Sprintf("https://%s", i.IssuerHostPath())
-		IssuerHostPath())
+}
+
+func newIamOIDCProviderIssuerMeta(providerName string) (*iamOIDCProviderIssuerMeta, error) {
+	if providerName == "" {
+		return nil, fmt.Errorf("IAM OIDC Provider Name must not be empty")
+	}
+	return &iamOIDCProviderIssuerMeta{providerName}, nil
+}
+
+type iamOIDCProviderIssuerMeta struct {
+	providerName string
+}
+
+func (i *iamOIDCProviderIssuerMeta) IssuerHostPath() string {
+	return i.providerName
+}
+
+func (i *iamOIDCProviderIssuerMeta) IssuerUrl() string {
+	return fmt.Sprintf("https://%s", i.IssuerHostPath())
 }