Remove kubernetesimagepuller webhook

cmd/webhook/main.go

@@ -102,9 +102,6 @@ func main() {
 	rolebindingValidator := &validatingwebhook.RoleBindingRequestValidator{
 		Client: cl,
 	}
-	k8sImagePullerRequestValidator := &validatingwebhook.K8sImagePullerRequestValidator{
-		Client: cl,
-	}
 	spacebindingrequestValidator := &validatingwebhook.SpaceBindingRequestValidator{
 		Client: cl,
 	}
@@ -113,7 +110,6 @@ func main() {
 	mux.HandleFunc("/mutate-users-pods", mutatingwebhook.HandleMutateUserPods)
 	mux.HandleFunc("/mutate-virtual-machines", mutatingwebhook.HandleMutateVirtualMachines)
 	mux.HandleFunc("/validate-users-rolebindings", rolebindingValidator.HandleValidate)
-	mux.HandleFunc("/validate-users-kubernetesimagepullers", k8sImagePullerRequestValidator.HandleValidate)
 	mux.HandleFunc("/validate-spacebindingrequests", spacebindingrequestValidator.HandleValidate)
 
 	webhookServer := &http.Server{ //nolint:gosec //TODO: configure ReadHeaderTimeout (gosec G112)

deploy/webhook/member-operator-webhook.yaml

@@ -218,34 +218,6 @@ objects:
       namespaceSelector:
         matchLabels:
           toolchain.dev.openshift.com/provider: codeready-toolchain
-    # The users.kubernetesimagepullers.webhook.sandbox validation webhook ensures that KubernetesImagePuller CRs cannot be created by a sandbox user.
-    # This webhook is needed to prevent user-created KubernetesImagePuller CRs from interfering with the devworkspace-controller-manager-* pod, as high memory
-    # usage was previously observed.
-    # The webhook code is available at member-operator/pkg/webhook/validatingwebhook/validate_k8simagepuller_request.go
-    - name: users.kubernetesimagepullers.webhook.sandbox
-      admissionReviewVersions:
-        - v1
-      clientConfig:
-        caBundle: ${CA_BUNDLE}
-        service:
-          name: member-operator-webhook
-          namespace: ${NAMESPACE}
-          path: "/validate-users-kubernetesimagepullers"
-          port: 443
-      matchPolicy: Equivalent
-      rules:
-        - operations: ["CREATE"]
-          apiGroups: ["che.eclipse.org"]
-          apiVersions: ["v1alpha1"]
-          resources: ["kubernetesimagepullers"]
-          scope: "Namespaced"
-      sideEffects: None
-      timeoutSeconds: 5
-      reinvocationPolicy: Never
-      failurePolicy: Fail
-      namespaceSelector:
-        matchLabels:
-          toolchain.dev.openshift.com/provider: codeready-toolchain
     # The users.spacebindingrequests.webhook.sandbox webhook validates SpaceBindingRequest CRs,
     # Specifically it makes sure that once a SBR resource is created, the SpaceBindingRequest.Spec.MasterUserRecord field is not changed by the user.
     # The reason for making SpaceBindingRequest.Spec.MasterUserRecord field immutable is that as of now the SpaceBinding resource name is composed as follows: <Space.Name>-checksum(<Space.Name>-<MasterUserRecord.Name>),

pkg/webhook/deploy/deployment_test.go

@@ -227,8 +227,7 @@ func mutatingWebhookConfig(namespace, caBundle string) string {
 }
 
 func validatingWebhookConfig(namespace, caBundle string) string {
-	return fmt.Sprintf(`{
-		"apiVersion": "admissionregistration.k8s.io/v1","kind": "ValidatingWebhookConfiguration","metadata": {"labels": {"app": "member-operator-webhook","toolchain.dev.openshift.com/provider": "codeready-toolchain"},"name": "member-operator-validating-webhook"},"webhooks": [{"admissionReviewVersions": ["v1"],"clientConfig": {"caBundle": "%[1]s","service": {"name": "member-operator-webhook","namespace": "%[2]s","path": "/validate-users-rolebindings","port": 443}},"failurePolicy": "Ignore","matchPolicy": "Equivalent","name": "users.rolebindings.webhook.sandbox","namespaceSelector": {"matchLabels": {"toolchain.dev.openshift.com/provider": "codeready-toolchain"}},"reinvocationPolicy": "Never","rules": [{"apiGroups": ["rbac.authorization.k8s.io","authorization.openshift.io"],"apiVersions": ["v1"],"operations": ["CREATE","UPDATE"],"resources": ["rolebindings"],"scope": "Namespaced"}],"sideEffects": "None","timeoutSeconds": 5},{"admissionReviewVersions": ["v1"],"clientConfig": {"caBundle": "%[1]s","service": {"name": "member-operator-webhook","namespace": "%[2]s","path": "/validate-users-kubernetesimagepullers","port": 443}},"failurePolicy": "Fail","matchPolicy": "Equivalent","name": "users.kubernetesimagepullers.webhook.sandbox","namespaceSelector": {"matchLabels": {"toolchain.dev.openshift.com/provider": "codeready-toolchain"}},"reinvocationPolicy": "Never","rules": [{"apiGroups": ["che.eclipse.org"],"apiVersions": ["v1alpha1"],"operations": ["CREATE"],"resources": ["kubernetesimagepullers"],"scope": "Namespaced"}],"sideEffects": "None","timeoutSeconds": 5},{"admissionReviewVersions": ["v1"],"clientConfig": {"caBundle": "%[1]s","service": {"name": "member-operator-webhook","namespace": "%[2]s","path": "/validate-spacebindingrequests","port": 443}},"failurePolicy": "Fail","matchPolicy": "Equivalent","name": "users.spacebindingrequests.webhook.sandbox","namespaceSelector": {"matchLabels": {"toolchain.dev.openshift.com/provider": "codeready-toolchain"}},"reinvocationPolicy": "Never","rules": [{"apiGroups": ["toolchain.dev.openshift.com"],"apiVersions": ["v1alpha1"],"operations": ["CREATE","UPDATE"],"resources": ["spacebindingrequests"],"scope": "Namespaced"}],"sideEffects": "None","timeoutSeconds": 5}]}`, caBundle, namespace)
+	return fmt.Sprintf(`{"apiVersion": "admissionregistration.k8s.io/v1","kind": "ValidatingWebhookConfiguration","metadata": {"labels": {"app": "member-operator-webhook","toolchain.dev.openshift.com/provider": "codeready-toolchain"},"name": "member-operator-validating-webhook"},"webhooks": [{"admissionReviewVersions": ["v1"],"clientConfig": {"caBundle": "%[1]s","service": {"name": "member-operator-webhook","namespace": "%[2]s","path": "/validate-users-rolebindings","port": 443}},"failurePolicy": "Ignore","matchPolicy": "Equivalent","name": "users.rolebindings.webhook.sandbox","namespaceSelector": {"matchLabels": {"toolchain.dev.openshift.com/provider": "codeready-toolchain"}},"reinvocationPolicy": "Never","rules": [{"apiGroups": ["rbac.authorization.k8s.io","authorization.openshift.io"],"apiVersions": ["v1"],"operations": ["CREATE","UPDATE"],"resources": ["rolebindings"],"scope": "Namespaced"}],"sideEffects": "None","timeoutSeconds": 5},{"admissionReviewVersions": ["v1"],"clientConfig": {"caBundle": "%[1]s","service": {"name": "member-operator-webhook","namespace": "%[2]s","path": "/validate-spacebindingrequests","port": 443}},"failurePolicy": "Fail","matchPolicy": "Equivalent","name": "users.spacebindingrequests.webhook.sandbox","namespaceSelector": {"matchLabels": {"toolchain.dev.openshift.com/provider": "codeready-toolchain"}},"reinvocationPolicy": "Never","rules": [{"apiGroups": ["toolchain.dev.openshift.com"],"apiVersions": ["v1alpha1"],"operations": ["CREATE","UPDATE"],"resources": ["spacebindingrequests"],"scope": "Namespaced"}],"sideEffects": "None","timeoutSeconds": 5}]}`, caBundle, namespace)
 }
 
 func serviceAccount(namespace string) string {