fix: Argo DB init conflict when deploy workflow-controller with multi…

…ple replicas #11177 (#11178)

Signed-off-by: astraw99 <wangchengiscool@gmail.com>

workflow/controller/controller.go

@@ -187,8 +187,6 @@ func NewWorkflowController(ctx context.Context, restConfig *rest.Config, kubecli
 		wfc.executorPlugins = map[string]map[string]*spec.Plugin{}
 	}
 
-	wfc.UpdateConfig(ctx)
-
 	wfc.metrics = metrics.New(wfc.getMetricsServerConfig())
 	wfc.entrypoint = entrypoint.New(kubeclientset, wfc.Config.Images)
 
@@ -240,6 +238,9 @@ var indexers = cache.Indexers{
 func (wfc *WorkflowController) Run(ctx context.Context, wfWorkers, workflowTTLWorkers, podCleanupWorkers int) {
 	defer runtimeutil.HandleCrash(runtimeutil.PanicHandlers...)
 
+	// init DB after leader election (if enabled)
+	wfc.UpdateConfig(ctx)
+
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()