chart: Add rbac.allowGrantingKubernetesContainerModePermissions

acceptance/testdata/kubernetes_container_mode.envsubst.yaml

@@ -0,0 +1,82 @@
+# USAGE:
+#   cat acceptance/testdata/kubernetes_container_mode.envsubst.yaml  | NAMESPACE=default envsubst  | kubectl apply -f -
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: k8s-mode-runner
+rules:
+- apiGroups: [""]
+  resources: ["pods"]
+  verbs: ["get", "list", "create", "delete"]
+- apiGroups: [""]
+  resources: ["pods/exec"]
+  verbs: ["get", "create"]
+- apiGroups: [""]
+  resources: ["pods/log"]
+  verbs: ["get", "list", "watch",]
+- apiGroups: ["batch"]
+  resources: ["jobs"]
+  verbs: ["get", "list", "create", "delete"]
+- apiGroups: [""]
+  resources: ["secrets"]
+  verbs: ["get", "list", "create", "delete"]
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: ClusterRole
+metadata:
+  name: runner-status-updater
+rules:
+- apiGroups: ["actions.summerwind.dev"]
+  resources: ["runners/status"]
+  verbs: ["get", "update", "patch"]
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: runner
+  namespace: ${NAMESPACE}
+---
+# To verify it's working, try:
+#   kubectl auth can-i --as system:serviceaccount:default:runner get pod
+# If incomplete, workflows and jobs would fail with an error message like:
+#   Error: Error: The Service account needs the following permissions [{"group":"","verbs":["get","list","create","delete"],"resource":"pods","subresource":""},{"group":"","verbs":["get","create"],"resource":"pods","subresource":"exec"},{"group":"","verbs":["get","list","watch"],"resource":"pods","subresource":"log"},{"group":"batch","verbs":["get","list","create","delete"],"resource":"jobs","subresource":""},{"group":"","verbs":["create","delete","get","list"],"resource":"secrets","subresource":""}] on the pod resource in the 'default' namespace. Please contact your self hosted runner administrator.
+#   Error: Process completed with exit code 1.
+apiVersion: rbac.authorization.k8s.io/v1
+# This role binding allows "jane" to read pods in the "default" namespace.
+# You need to already have a Role named "pod-reader" in that namespace.
+kind: RoleBinding
+metadata:
+  name: runner-k8s-mode-runner
+  namespace: ${NAMESPACE}
+subjects:
+- kind: ServiceAccount
+  name: runner
+  namespace: ${NAMESPACE}
+roleRef:
+  kind: ClusterRole
+  name: k8s-mode-runner
+  apiGroup: rbac.authorization.k8s.io
+---
+apiVersion: rbac.authorization.k8s.io/v1
+kind: RoleBinding
+metadata:
+  name: runner-runner-stat-supdater
+  namespace: ${NAMESPACE}
+subjects:
+- kind: ServiceAccount
+  name: runner
+  namespace: ${NAMESPACE}
+roleRef:
+  kind: ClusterRole
+  name: runner-status-updater
+  apiGroup: rbac.authorization.k8s.io
+---
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: org-runnerdeploy-runner-work-dir
+  labels:
+    content: org-runnerdeploy-runner-work-dir
+provisioner: rancher.io/local-path
+reclaimPolicy: Delete
+volumeBindingMode: WaitForFirstConsumer

acceptance/testdata/runnerdeploy.envsubst.yaml

@@ -43,6 +43,17 @@ spec:
       # Non-standard working directory
       #
       # workDir: "/"
+
+      # # Uncomment the below to enable the kubernetes container mode
+      # # See https://github.com/actions-runner-controller/actions-runner-controller#runner-with-k8s-jobs
+      containerMode: kubernetes
+      workVolumeClaimTemplate:
+        accessModes:
+        - ReadWriteOnce
+        storageClassName: "${NAME}-runner-work-dir"
+        resources:
+          requests:
+            storage: 10Gi
 ---
 apiVersion: actions.summerwind.dev/v1alpha1
 kind: HorizontalRunnerAutoscaler

acceptance/values.yaml

@@ -5,6 +5,11 @@ imagePullSecrets:
 image:
   actionsRunnerImagePullSecrets:
   - name:
+runner:
+  statusUpdateHook:
+    enabled: true
+rbac:
+  allowGrantingKubernetesContainerModePermissions: true
 githubWebhookServer:
   imagePullSecrets:
   - name:

charts/actions-runner-controller/templates/manager_role.yaml

@@ -284,3 +284,27 @@ rules:
   - delete
   - get
 {{- end }}
+{{- if .Values.rbac.allowGrantingKubernetesContainerModePermissions }}
+- apiGroups:
+  - ""
+  resources:
+  - pods/exec
+  verbs:
+  - create
+  - get
+- apiGroups:
+  - ""
+  resources:
+  - pods/log
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups:
+  - ""
+  resources:
+  - secrets
+  verbs:
+  - create
+  - delete
+{{- end }}

charts/actions-runner-controller/values.yaml

@@ -71,6 +71,13 @@ runner:
   statusUpdateHook:
     enabled: false
 
+rbac:
+  # # This allows ARC to dynamically create a ServiceAccount and a Role for each Runner pod that uses "kubernetes" container mode,
+  # # by extending ARC's manager role to have the same permissions required by the pod runs the runner agent in "kubernetes" container mode.
+  # # Without this, Kubernetes blocks ARC to create the role to prevent a priviledge escalation.
+  # # See https://github.com/actions-runner-controller/actions-runner-controller/pull/1268/files#r917327010
+  # allowGrantingKubernetesContainerModePermissions: true
+
 serviceAccount:
   # Specifies whether a service account should be created
   create: true

test/e2e/e2e_test.go

@@ -105,6 +105,10 @@ func TestE2E(t *testing.T) {
 	}
 
 	t.Run("RunnerSets", func(t *testing.T) {
+		if os.Getenv("ARC_E2E_SKIP_RUNNERSETS") != "" {
+			t.Skip("RunnerSets test has been skipped due to ARC_E2E_SKIP_RUNNERSETS")
+		}
+
 		var (
 			testID string
 		)