Make service-account optional

Signed-off-by: Per Goncalves da Silva <[email protected]>

Author: Per Goncalves da Silva

api/v1/clusterextension_types.go

@@ -66,10 +66,10 @@ type ClusterExtensionSpec struct {
 	// with the cluster that are required to manage the extension.
 	// The ServiceAccount must be configured with the necessary permissions to perform these interactions.
 	// The ServiceAccount must exist in the namespace referenced in the spec.
-	// serviceAccount is required.
+	// serviceAccount is optional.
 	//
-	// +kubebuilder:validation:Required
-	ServiceAccount ServiceAccountReference `json:"serviceAccount"`
+	// +optional
+	ServiceAccount *ServiceAccountReference `json:"serviceAccount"`
 
 	// source is a required field which selects the installation source of content
 	// for this ClusterExtension. Selection is performed by setting the sourceType.

config/base/operator-controller/crd/bases/olm.operatorframework.io_clusterextensions.yaml

@@ -135,7 +135,7 @@ spec:
                   with the cluster that are required to manage the extension.
                   The ServiceAccount must be configured with the necessary permissions to perform these interactions.
                   The ServiceAccount must exist in the namespace referenced in the spec.
-                  serviceAccount is required.
+                  serviceAccount is optional.
                 properties:
                   name:
                     description: |-
@@ -458,7 +458,6 @@ spec:
                     has(self.catalog) : !has(self.catalog)'
             required:
             - namespace
-            - serviceAccount
             - source
             type: object
           status:

config/base/operator-controller/rbac/role.yaml

@@ -10,6 +10,12 @@ rules:
   - serviceaccounts/token
   verbs:
   - create
+- apiGroups:
+  - '*'
+  resources:
+  - '*'
+  verbs:
+  - '*'
 - apiGroups:
   - apiextensions.k8s.io
   resources:

config/overlays/featuregate/webhook-support/kustomization.yaml

@@ -0,0 +1,15 @@
+# kustomization file for secure OLMv1
+# DO NOT ADD A NAMESPACE HERE
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+resources:
+  - ../../../base/operator-controller
+  - ../../../base/common
+components:
+  - ../../../components/tls/operator-controller
+
+patches:
+ - target:
+      kind: Deployment
+      name: operator-controller-controller-manager
+   path: patches/enable-featuregate.yaml

config/overlays/featuregate/webhook-support/patches/enable-featuregate.yaml

@@ -0,0 +1,4 @@
+# enable synthetic-user feature gate
+- op: add
+  path: /spec/template/spec/containers/0/args/-
+  value: "--feature-gates=WebhookSupport=true"

docs/api-reference/operator-controller-api-reference.md

@@ -306,7 +306,7 @@ _Appears in:_
 | Field | Description | Default | Validation |
 | --- | --- | --- | --- |
 | `namespace` _string_ | namespace is a reference to a Kubernetes namespace.<br />This is the namespace in which the provided ServiceAccount must exist.<br />It also designates the default namespace where namespace-scoped resources<br />for the extension are applied to the cluster.<br />Some extensions may contain namespace-scoped resources to be applied in other namespaces.<br />This namespace must exist.<br /><br />namespace is required, immutable, and follows the DNS label standard<br />as defined in [RFC 1123]. It must contain only lowercase alphanumeric characters or hyphens (-),<br />start and end with an alphanumeric character, and be no longer than 63 characters<br /><br />[RFC 1123]: https://tools.ietf.org/html/rfc1123 |  | MaxLength: 63 <br />Required: \{\} <br /> |
-| `serviceAccount` _[ServiceAccountReference](#serviceaccountreference)_ | serviceAccount is a reference to a ServiceAccount used to perform all interactions<br />with the cluster that are required to manage the extension.<br />The ServiceAccount must be configured with the necessary permissions to perform these interactions.<br />The ServiceAccount must exist in the namespace referenced in the spec.<br />serviceAccount is required. |  | Required: \{\} <br /> |
+| `serviceAccount` _[ServiceAccountReference](#serviceaccountreference)_ | serviceAccount is a reference to a ServiceAccount used to perform all interactions<br />with the cluster that are required to manage the extension.<br />The ServiceAccount must be configured with the necessary permissions to perform these interactions.<br />The ServiceAccount must exist in the namespace referenced in the spec.<br />serviceAccount is optional. |  |  |
 | `source` _[SourceConfig](#sourceconfig)_ | source is a required field which selects the installation source of content<br />for this ClusterExtension. Selection is performed by setting the sourceType.<br /><br />Catalog is currently the only implemented sourceType, and setting the<br />sourcetype to "Catalog" requires the catalog field to also be defined.<br /><br />Below is a minimal example of a source definition (in yaml):<br /><br />source:<br />  sourceType: Catalog<br />  catalog:<br />    packageName: example-package |  | Required: \{\} <br /> |
 | `install` _[ClusterExtensionInstallConfig](#clusterextensioninstallconfig)_ | install is an optional field used to configure the installation options<br />for the ClusterExtension such as the pre-flight check configuration. |  |  |
 

hack/demo/optional-sa-demo.sh

@@ -0,0 +1,24 @@
+#!/usr/bin/env bash
+
+#
+# Welcome to the OwnNamespace install mode demo
+#
+trap "trap - SIGTERM && kill -- -$$" SIGINT SIGTERM EXIT
+
+# list namespaces
+kubectl get ns
+
+# show cluster extension definition
+bat --style=plain hack/demo/resources/optional-sa/cluster-extension.yaml
+
+# apply cluster extension
+kubectl apply -f ${DEMO_RESOURCE_DIR}/optional-sa/cluster-extension.yaml
+
+# wait for install to complete
+kubectl wait clusterextension zookeeper-operator --for=condition=Installed=true
+
+# see full cluster extension
+kubectl get clusterextension zookeeper-operator -o yaml
+
+# show deployment
+kubectl get deployments -n zookeeper-operator

hack/demo/resources/optional-sa/cluster-extension.yaml

@@ -0,0 +1,12 @@
+---
+apiVersion: olm.operatorframework.io/v1
+kind: ClusterExtension
+metadata:
+  name: zookeeper-operator
+spec:
+  namespace: zookeeper-operator
+  source:
+    sourceType: Catalog
+    catalog:
+      packageName: zookeeper-operator
+      version: 0.17.0

internal/operator-controller/action/restconfig.go

@@ -15,6 +15,9 @@ import (
 func ServiceAccountRestConfigMapper(tokenGetter *authentication.TokenGetter) func(ctx context.Context, o client.Object, c *rest.Config) (*rest.Config, error) {
 	return func(ctx context.Context, o client.Object, c *rest.Config) (*rest.Config, error) {
 		cExt := o.(*ocv1.ClusterExtension)
+		if cExt.Spec.ServiceAccount == nil {
+			return rest.CopyConfig(c), nil
+		}
 		saKey := types.NamespacedName{
 			Name:      cExt.Spec.ServiceAccount.Name,
 			Namespace: cExt.Spec.Namespace,

internal/operator-controller/applier/helm.go

@@ -125,7 +125,7 @@ func (h *Helm) Apply(ctx context.Context, contentFS fs.FS, ext *ocv1.ClusterExte
 		labels: objectLabels,
 	}
 
-	if h.PreAuthorizer != nil {
+	if h.PreAuthorizer != nil && ext.Spec.ServiceAccount != nil {
 		err := h.runPreAuthorizationChecks(ctx, ext, chrt, values, post)
 		if err != nil {
 			// Return the pre-authorization error directly
@@ -166,6 +166,7 @@ func (h *Helm) Apply(ctx context.Context, contentFS fs.FS, ext *ocv1.ClusterExte
 		rel, err = ac.Install(ext.GetName(), ext.Spec.Namespace, chrt, values, func(install *action.Install) error {
 			install.CreateNamespace = false
 			install.Labels = storageLabels
+			install.CreateNamespace = true
 			return nil
 		}, helmclient.AppendInstallPostRenderer(post))
 		if err != nil {