// Initialize distributed NS lock.
	if globalIsDistErasure {
		registerDistErasureRouters(router, endpointServerPools)
	}

	// Add Admin router, all APIs are enabled in server mode.
	registerAdminRouter(router, true)

	// Add healthCheck router
	registerHealthCheckRouter(router)

	// Add server metrics router
	registerMetricsRouter(router)

	// Add STS router always.
	registerSTSRouter(router)

	}

	return handler
}

// adminAPIHandlers provides HTTP handlers for MinIO admin API.
type adminAPIHandlers struct{}

// registerAdminRouter - Add handler functions for each service REST API routes.
func registerAdminRouter(router *mux.Router, enableConfigOps bool) {
	adminAPI := adminAPIHandlers{}
	// Admin router
	adminRouter := router.PathPrefix(adminPathPrefix).Subrouter()

	initAllSubsystems(ctx)

	initConfigSubsystem(ctx, objLayer)

	globalIAMSys.Init(ctx, objLayer, globalEtcdClient, 2*time.Second)

	// Setup admin mgmt REST API handlers.
	adminRouter := mux.NewRouter()
	registerAdminRouter(adminRouter, true)

	return &adminErasureTestBed{
		erasureDirs: erasureDirs,
		objLayer:    objLayer,
		router:      adminRouter,
		done:        cancel,
	}, nil
}