Merge pull request #2846 from Infisical/misc/operator-namespace-installation

feat: k8 operator namespace installation

docs/integrations/platforms/kubernetes.mdx

@@ -41,6 +41,30 @@ The operator can be install via [Helm](https://helm.sh) or [kubectl](https://git
     helm install --generate-name infisical-helm-charts/secrets-operator --version=0.1.4 --set controllerManager.manager.image.tag=v0.2.0
     ```
 
+    **Namespace-scoped Installation**
+
+    The operator can be configured to watch and manage secrets in a specific namespace instead of having cluster-wide access.
+
+    ```bash
+    helm install operator infisical-helm-charts/secrets-operator \
+      --namespace your-namespace \
+      --set scopedNamespace=your-namespace \
+      --set scopedRBAC=true
+    ```
+
+    When scoped to a namespace, the operator will:
+
+    - Only watch InfisicalSecrets in the specified namespace
+    - Only create/update Kubernetes secrets in that namespace
+    - Only access deployments in that namespace
+
+    The default configuration gives cluster-wide access:
+
+    ```yaml
+    scopedNamespace: "" # Empty for cluster-wide access
+    scopedRBAC: false # Cluster-wide permissions
+    ```
+
    </Tab>
 	 <Tab title="Kubectl">
    For production deployments, it is highly recommended to set the version of the Kubernetes operator manually instead of pointing to the latest version.

helm-charts/secrets-operator/Chart.yaml

@@ -13,9 +13,9 @@ type: application
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: v0.7.5
+version: v0.7.6
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "v0.7.5"
+appVersion: "v0.7.6"

helm-charts/secrets-operator/templates/deployment.yaml

@@ -54,7 +54,11 @@ spec:
           10 }}
         securityContext: {{- toYaml .Values.controllerManager.kubeRbacProxy.containerSecurityContext
           | nindent 10 }}
-      - args: {{- toYaml .Values.controllerManager.manager.args | nindent 8 }}
+      - args:
+        {{- toYaml .Values.controllerManager.manager.args | nindent 8 }}
+        {{- if and .Values.scopedNamespace .Values.scopedRBAC }}
+        - --namespace={{ .Values.scopedNamespace }}
+        {{- end }}
         command:
         - /manager
         env:

helm-charts/secrets-operator/templates/manager-rbac.yaml

@@ -1,7 +1,14 @@
 apiVersion: rbac.authorization.k8s.io/v1
+{{- if and .Values.scopedNamespace .Values.scopedRBAC }}
+kind: Role
+{{- else }}
 kind: ClusterRole
+{{- end }}
 metadata:
   name: {{ include "secrets-operator.fullname" . }}-manager-role
+  {{- if and .Values.scopedNamespace .Values.scopedRBAC }}
+  namespace: {{ .Values.scopedNamespace | quote }}
+  {{- end }}
   labels:
   {{- include "secrets-operator.labels" . | nindent 4 }}
 rules:
@@ -72,9 +79,16 @@ rules:
   - update
 ---
 apiVersion: rbac.authorization.k8s.io/v1
+{{- if and .Values.scopedNamespace .Values.scopedRBAC }}
+kind: RoleBinding
+{{- else }}
 kind: ClusterRoleBinding
+{{- end }}
 metadata:
   name: {{ include "secrets-operator.fullname" . }}-manager-rolebinding
+  {{- if and .Values.scopedNamespace .Values.scopedRBAC }}
+  namespace: {{ .Values.scopedNamespace | quote }}
+  {{- end }}
   labels:
     app.kubernetes.io/component: rbac
     app.kubernetes.io/created-by: k8-operator
@@ -82,7 +96,11 @@ metadata:
   {{- include "secrets-operator.labels" . | nindent 4 }}
 roleRef:
   apiGroup: rbac.authorization.k8s.io
+  {{- if and .Values.scopedNamespace .Values.scopedRBAC }}
+  kind: Role
+  {{- else }}
   kind: ClusterRole
+  {{- end }}
   name: '{{ include "secrets-operator.fullname" . }}-manager-role'
 subjects:
 - kind: ServiceAccount

helm-charts/secrets-operator/values.yaml

@@ -1,15 +1,15 @@
 controllerManager:
   kubeRbacProxy:
     args:
-    - --secure-listen-address=0.0.0.0:8443
+      - --secure-listen-address=0.0.0.0:8443
-    - --upstream=http://127.0.0.1:8080/
+      - --upstream=http://127.0.0.1:8080/
-    - --logtostderr=true
+      - --logtostderr=true
-    - --v=0
+      - --v=0
     containerSecurityContext:
       allowPrivilegeEscalation: false
       capabilities:
         drop:
-        - ALL
+          - ALL
     image:
       repository: gcr.io/kubebuilder/kube-rbac-proxy
       tag: v0.15.0
@@ -22,17 +22,17 @@ controllerManager:
         memory: 64Mi
   manager:
     args:
-    - --health-probe-bind-address=:8081
+      - --health-probe-bind-address=:8081
-    - --metrics-bind-address=127.0.0.1:8080
+      - --metrics-bind-address=127.0.0.1:8080
-    - --leader-elect
+      - --leader-elect
     containerSecurityContext:
       allowPrivilegeEscalation: false
       capabilities:
         drop:
-        - ALL
+          - ALL
     image:
       repository: infisical/kubernetes-operator
-      tag: v0.7.5
+      tag: v0.7.6
     resources:
       limits:
         cpu: 500m
@@ -46,10 +46,12 @@ controllerManager:
   nodeSelector: {}
   tolerations: []
 kubernetesClusterDomain: cluster.local
+scopedNamespace: ""
+scopedRBAC: false
 metricsService:
   ports:
-  - name: https
+    - name: https
-    port: 8443
+      port: 8443
-    protocol: TCP
+      protocol: TCP
-    targetPort: https
+      targetPort: https
   type: ClusterIP

k8-operator/main.go

@@ -36,8 +36,10 @@ func main() {
 	var metricsAddr string
 	var enableLeaderElection bool
 	var probeAddr string
+	var namespace string
 	flag.StringVar(&metricsAddr, "metrics-bind-address", ":8080", "The address the metric endpoint binds to.")
 	flag.StringVar(&probeAddr, "health-probe-bind-address", ":8081", "The address the probe endpoint binds to.")
+	flag.StringVar(&namespace, "namespace", "", "Watch InfisicalSecrets scoped in the provided namespace only")
 	flag.BoolVar(&enableLeaderElection, "leader-elect", false,
 		"Enable leader election for controller manager. "+
 			"Enabling this will ensure there is only one active controller manager.")
@@ -49,7 +51,7 @@ func main() {
 
 	ctrl.SetLogger(zap.New(zap.UseFlagOptions(&opts)))
 
-	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrl.Options{
+	ctrlOpts := ctrl.Options{
 		Scheme:                 scheme,
 		MetricsBindAddress:     metricsAddr,
 		Port:                   9443,
@@ -67,7 +69,13 @@ func main() {
 		// if you are doing or is intended to do any operation such as perform cleanups
 		// after the manager stops then its usage might be unsafe.
 		// LeaderElectionReleaseOnCancel: true,
-	})
+	}
+
+	if namespace != "" {
+		ctrlOpts.Namespace = namespace
+	}
+
+	mgr, err := ctrl.NewManager(ctrl.GetConfigOrDie(), ctrlOpts)
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
 		os.Exit(1)