diff --git a/operators/constellation-node-operator/controllers/autoscalingstrategy_controller_env_test.go b/operators/constellation-node-operator/controllers/autoscalingstrategy_controller_env_test.go
index 97a12695d..c4fa92940 100644
--- a/operators/constellation-node-operator/controllers/autoscalingstrategy_controller_env_test.go
+++ b/operators/constellation-node-operator/controllers/autoscalingstrategy_controller_env_test.go
@@ -23,6 +23,12 @@ import (
 )
 
 var _ = Describe("AutoscalingStrategy controller", func() {
+	AfterEach(func() {
+		Eventually(func() error {
+			return resetEnv()
+		}, 30*time.Second, 1*time.Second).Should(Succeed())
+	})
+
 	// Define utility constants for object names and testing timeouts/durations and intervals.
 	const (
 		ClusterAutoscalerDeploymentName      = "cluster-autoscaler"
@@ -331,7 +337,7 @@ var _ = Describe("AutoscalingStrategy controller", func() {
 					return nil
 				}
 				return createdDeployment.Spec.Template.Spec.Containers[0].Command
-			}, timeout, interval).Should(Equal([]string{
+			}, 2*time.Second, interval).Should(Equal([]string{
 				"./cluster-autoscaler",
 				"--baz=qux",
 				"--foo=bar",
diff --git a/operators/constellation-node-operator/controllers/nodeversion_controller_env_test.go b/operators/constellation-node-operator/controllers/nodeversion_controller_env_test.go
index eadadac91..91cd96774 100644
--- a/operators/constellation-node-operator/controllers/nodeversion_controller_env_test.go
+++ b/operators/constellation-node-operator/controllers/nodeversion_controller_env_test.go
@@ -27,36 +27,9 @@ import (
 
 var _ = Describe("NodeVersion controller", func() {
 	AfterEach(func() {
-		// cleanup all nodes
-		nodeList := &corev1.NodeList{}
-		Expect(k8sClient.List(context.Background(), nodeList)).To(Succeed())
-		for _, node := range nodeList.Items {
-			Expect(k8sClient.Delete(context.Background(), &node)).To(Succeed())
-		}
-		// cleanup all node versions
-		nodeVersionList := &updatev1alpha1.NodeVersionList{}
-		Expect(k8sClient.List(context.Background(), nodeVersionList)).To(Succeed())
-		for _, nodeVersion := range nodeVersionList.Items {
-			Expect(k8sClient.Delete(context.Background(), &nodeVersion)).To(Succeed())
-		}
-		// cleanup all scaling groups
-		scalingGroupList := &updatev1alpha1.ScalingGroupList{}
-		Expect(k8sClient.List(context.Background(), scalingGroupList)).To(Succeed())
-		for _, scalingGroup := range scalingGroupList.Items {
-			Expect(k8sClient.Delete(context.Background(), &scalingGroup)).To(Succeed())
-		}
-		// cleanup all pending nodes
-		pendingNodeList := &updatev1alpha1.PendingNodeList{}
-		Expect(k8sClient.List(context.Background(), pendingNodeList)).To(Succeed())
-		for _, pendingNode := range pendingNodeList.Items {
-			Expect(k8sClient.Delete(context.Background(), &pendingNode)).To(Succeed())
-		}
-		// cleanup all joining nodes
-		joiningNodeList := &updatev1alpha1.JoiningNodeList{}
-		Expect(k8sClient.List(context.Background(), joiningNodeList)).To(Succeed())
-		for _, joiningNode := range joiningNodeList.Items {
-			Expect(k8sClient.Delete(context.Background(), &joiningNode)).To(Succeed())
-		}
+		Eventually(func() error {
+			return resetEnv()
+		}, 30*time.Second, 1*time.Second).Should(Succeed())
 	})
 
 	// Define utility constants for object names and testing timeouts/durations and intervals.
diff --git a/operators/constellation-node-operator/controllers/nodeversion_controller_test.go b/operators/constellation-node-operator/controllers/nodeversion_controller_test.go
index 9849c9889..1d42691bd 100644
--- a/operators/constellation-node-operator/controllers/nodeversion_controller_test.go
+++ b/operators/constellation-node-operator/controllers/nodeversion_controller_test.go
@@ -816,6 +816,17 @@ func (r *stubNodeReplacer) setCreatedNode(nodeName, providerID string, err error
 	r.createErr = err
 }
 
+func (r *stubNodeReplacer) reset() {
+	r.Lock()
+	defer r.Unlock()
+	r.nodeImages = nil
+	r.scalingGroups = nil
+	r.createNodeName = ""
+	r.createProviderID = ""
+	r.createErr = nil
+	r.deleteErr = nil
+}
+
 type stubKubernetesServerVersionGetter struct {
 	version string
 	err     error
diff --git a/operators/constellation-node-operator/controllers/pendingnode_controller_env_test.go b/operators/constellation-node-operator/controllers/pendingnode_controller_env_test.go
index 64c164766..a5ed6b079 100644
--- a/operators/constellation-node-operator/controllers/pendingnode_controller_env_test.go
+++ b/operators/constellation-node-operator/controllers/pendingnode_controller_env_test.go
@@ -24,6 +24,12 @@ import (
 )
 
 var _ = Describe("PendingNode controller", func() {
+	AfterEach(func() {
+		Eventually(func() error {
+			return resetEnv()
+		}, 30*time.Second, 1*time.Second).Should(Succeed())
+	})
+
 	// Define utility constants for object names and testing timeouts/durations and intervals.
 	const (
 		pendingNodeName = "pending-node"
diff --git a/operators/constellation-node-operator/controllers/scalinggroup_controller_env_test.go b/operators/constellation-node-operator/controllers/scalinggroup_controller_env_test.go
index 45edacc41..fd8ee1a08 100644
--- a/operators/constellation-node-operator/controllers/scalinggroup_controller_env_test.go
+++ b/operators/constellation-node-operator/controllers/scalinggroup_controller_env_test.go
@@ -21,6 +21,12 @@ import (
 )
 
 var _ = Describe("ScalingGroup controller", func() {
+	AfterEach(func() {
+		Eventually(func() error {
+			return resetEnv()
+		}, 30*time.Second, 1*time.Second).Should(Succeed())
+	})
+
 	// Define utility constants for object names and testing timeouts/durations and intervals.
 	const (
 		nodeVersionName  = "node-version"
diff --git a/operators/constellation-node-operator/controllers/scalinggroup_controller_test.go b/operators/constellation-node-operator/controllers/scalinggroup_controller_test.go
index b21e46937..9769722bd 100644
--- a/operators/constellation-node-operator/controllers/scalinggroup_controller_test.go
+++ b/operators/constellation-node-operator/controllers/scalinggroup_controller_test.go
@@ -34,3 +34,9 @@ func (u *fakeScalingGroupUpdater) SetScalingGroupImage(_ context.Context, scalin
 	u.scalingGroupImage[scalingGroupID] = imageURI
 	return nil
 }
+
+func (u *fakeScalingGroupUpdater) reset() {
+	u.Lock()
+	defer u.Unlock()
+	u.scalingGroupImage = make(map[string]string)
+}
diff --git a/operators/constellation-node-operator/controllers/suite_test.go b/operators/constellation-node-operator/controllers/suite_test.go
index bf8e19c13..6a41e2ccb 100644
--- a/operators/constellation-node-operator/controllers/suite_test.go
+++ b/operators/constellation-node-operator/controllers/suite_test.go
@@ -19,6 +19,8 @@ import (
 	nodemaintenancev1beta1 "github.com/edgelesssys/constellation/v2/3rdparty/node-maintenance-operator/api/v1beta1"
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
+	appsv1 "k8s.io/api/apps/v1"
+	corev1 "k8s.io/api/core/v1"
 	"k8s.io/client-go/kubernetes/scheme"
 	"k8s.io/client-go/rest"
 	testclock "k8s.io/utils/clock/testing"
@@ -45,6 +47,7 @@ var (
 
 func TestAPIs(t *testing.T) {
 	RegisterFailHandler(Fail)
+	// config.GinkgoConfig.RandomSeed = 1679587116
 	RunSpecs(t, "Controller Suite")
 }
 
@@ -141,6 +144,12 @@ type fakeCollection struct {
 	clock               *testclock.FakeClock
 }
 
+func (c *fakeCollection) reset() {
+	c.scalingGroupUpdater.reset()
+	c.nodeStateGetter.setNodeState("")
+	c.nodeReplacer.reset()
+}
+
 func newFakes() fakeCollection {
 	return fakeCollection{
 		scalingGroupUpdater: newFakeScalingGroupUpdater(),
@@ -150,3 +159,78 @@ func newFakes() fakeCollection {
 		clock:               testclock.NewFakeClock(time.Now()),
 	}
 }
+
+func resetEnv() error {
+	// cleanup all nodes
+	nodeList := &corev1.NodeList{}
+	if err := k8sClient.List(context.Background(), nodeList); err != nil {
+		return err
+	}
+	for _, node := range nodeList.Items {
+		if err := k8sClient.Delete(context.Background(), &node); err != nil {
+			return err
+		}
+	}
+	// cleanup all node versions
+	nodeVersionList := &updatev1alpha1.NodeVersionList{}
+	if err := k8sClient.List(context.Background(), nodeVersionList); err != nil {
+		return err
+	}
+	for _, nodeVersion := range nodeVersionList.Items {
+		if err := k8sClient.Delete(context.Background(), &nodeVersion); err != nil {
+			return err
+		}
+	}
+	// cleanup all scaling groups
+	scalingGroupList := &updatev1alpha1.ScalingGroupList{}
+	if err := k8sClient.List(context.Background(), scalingGroupList); err != nil {
+		return err
+	}
+	for _, scalingGroup := range scalingGroupList.Items {
+		if err := k8sClient.Delete(context.Background(), &scalingGroup); err != nil {
+			return err
+		}
+	}
+	// cleanup all pending nodes
+	pendingNodeList := &updatev1alpha1.PendingNodeList{}
+	if err := k8sClient.List(context.Background(), pendingNodeList); err != nil {
+		return err
+	}
+	for _, pendingNode := range pendingNodeList.Items {
+		if err := k8sClient.Delete(context.Background(), &pendingNode); err != nil {
+			return err
+		}
+	}
+	// cleanup all joining nodes
+	joiningNodeList := &updatev1alpha1.JoiningNodeList{}
+	if err := k8sClient.List(context.Background(), joiningNodeList); err != nil {
+		return err
+	}
+	for _, joiningNode := range joiningNodeList.Items {
+		if err := k8sClient.Delete(context.Background(), &joiningNode); err != nil {
+			return err
+		}
+	}
+	// cleanup all autoscaling strategies
+	autoscalingStrategyList := &updatev1alpha1.AutoscalingStrategyList{}
+	if err := k8sClient.List(context.Background(), autoscalingStrategyList); err != nil {
+		return err
+	}
+	for _, autoscalingStrategy := range autoscalingStrategyList.Items {
+		if err := k8sClient.Delete(context.Background(), &autoscalingStrategy); err != nil {
+			return err
+		}
+	}
+	// cleanup all deployments
+	deploymentList := &appsv1.DeploymentList{}
+	if err := k8sClient.List(context.Background(), deploymentList); err != nil {
+		return err
+	}
+	for _, deployment := range deploymentList.Items {
+		if err := k8sClient.Delete(context.Background(), &deployment); err != nil {
+			return err
+		}
+	}
+	fakes.reset()
+	return nil
+}