[Fix] Remove the requirement for VAP (#3908)

VAP is a default admission plugin enabled while starting an API server for visibility. The Kueue controller has additional permissions to watch those GVKs even though it is not required. Disabling the plugin from api server helps in keeping it minimal and maintaining compatibility with previous versions of K8s. Signed-off-by: Varsha Prasad Narsing <[email protected]>
kubernetes-sigs · Dec 31, 2024 · 869d003 · 869d003
1 parent 7eb9830
commit 869d003
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Showing 4 changed files with 2 additions and 21 deletions.
diff --git a/charts/kueue/templates/rbac/role.yaml b/charts/kueue/templates/rbac/role.yaml
@@ -79,15 +79,6 @@ rules:
       - list
       - update
       - watch
-  - apiGroups:
-      - admissionregistration.k8s.io
-    resources:
-      - validatingadmissionpolicies
-      - validatingadmissionpolicybindings
-    verbs:
-      - get
-      - list
-      - watch
   - apiGroups:
       - apps
     resources:

diff --git a/config/components/rbac/role.yaml b/config/components/rbac/role.yaml
@@ -78,15 +78,6 @@ rules:
   - list
   - update
   - watch
-- apiGroups:
-  - admissionregistration.k8s.io
-  resources:
-  - validatingadmissionpolicies
-  - validatingadmissionpolicybindings
-  verbs:
-  - get
-  - list
-  - watch
 - apiGroups:
   - apps
   resources:

diff --git a/pkg/util/cert/cert.go b/pkg/util/cert/cert.go
@@ -38,8 +38,6 @@ const (
 // +kubebuilder:rbac:groups="",resources=secrets,verbs=get;list;watch;update
 // +kubebuilder:rbac:groups="admissionregistration.k8s.io",resources=mutatingwebhookconfigurations,verbs=get;list;watch;update
 // +kubebuilder:rbac:groups="admissionregistration.k8s.io",resources=validatingwebhookconfigurations,verbs=get;list;watch;update
-// +kubebuilder:rbac:groups="admissionregistration.k8s.io",resources=validatingadmissionpolicies,verbs=get;list;watch
-// +kubebuilder:rbac:groups="admissionregistration.k8s.io",resources=validatingadmissionpolicybindings,verbs=get;list;watch
 
 // ManageCerts creates all certs for webhooks. This function is called from main.go.
 func ManageCerts(mgr ctrl.Manager, cfg config.Configuration, setupFinished chan struct{}) error {

diff --git a/pkg/visibility/server.go b/pkg/visibility/server.go
@@ -23,6 +23,7 @@ import (
 	"os"
 	"strings"
 
+	validatingadmissionpolicy "k8s.io/apiserver/pkg/admission/plugin/policy/validating"
 	openapinamer "k8s.io/apiserver/pkg/endpoints/openapi"
 	genericapiserver "k8s.io/apiserver/pkg/server"
 	genericoptions "k8s.io/apiserver/pkg/server/options"
@@ -77,7 +78,7 @@ func applyVisibilityServerOptions(config *genericapiserver.RecommendedConfig) er
 	o.SecureServing.BindPort = 8082
 	// The directory where TLS certs will be created
 	o.SecureServing.ServerCert.CertDirectory = "/tmp"
-
+	o.Admission.DisablePlugins = []string{validatingadmissionpolicy.PluginName}
 	if err := o.SecureServing.MaybeDefaultWithSelfSignedCerts("localhost", nil, []net.IP{net.ParseIP("127.0.0.1")}); err != nil {
 		return fmt.Errorf("error creating self-signed certificates: %v", err)
 	}