Migrate away from configmaps as leader-eletion mechanism (#488)

Author: davidkarlsen

config/rbac/role.yaml

@@ -24,6 +24,12 @@ rules:
   - secrets
   verbs:
   - '*'
+- apiGroups:
+  - coordination.k8s.io
+  resources:
+  - leases
+  verbs:
+  - '*'
 - apiGroups:
   - garo.tietoevry.com
   resources:

controllers/githubactionrunner_controller.go

@@ -73,6 +73,7 @@ func (r *GithubActionRunnerReconciler) IsValid(obj metav1.Object) (bool, error)
 // +kubebuilder:rbac:groups="",resources=pods,verbs="*"
 // +kubebuilder:rbac:groups="",resources=secrets,verbs="*"
 // +kubebuilder:rbac:groups="",resources=events,verbs=create;patch
+// +kubebuilder:rbac:groups=coordination.k8s.io,resources=leases,verbs="*"
 
 // Reconcile is the main loop implementing the controller action
 func (r *GithubActionRunnerReconciler) Reconcile(ctx context.Context, req ctrl.Request) (ctrl.Result, error) {

main.go

@@ -72,7 +72,7 @@ func main() {
 		Namespace:                  namespace,
 		LeaderElection:             enableLeaderElection,
 		LeaderElectionID:           "4ef9cd91.tietoevry.com",
-		LeaderElectionResourceLock: "configmaps",
+		LeaderElectionResourceLock: "configmapsleases",
 	}
 	if strings.Contains(namespace, ",") {
 		options.Namespace = ""