do not delete static routes on controller startup (#1560)

pkg/controller/controller.go

@@ -520,9 +520,6 @@ func (c *Controller) Run(stopCh <-chan struct{}) {
 	if err := c.initSyncCrdVlans(); err != nil {
 		klog.Errorf("failed to sync crd vlans: %v", err)
 	}
-	if err := c.initDeleteOverlayPodsStaticRoutes(); err != nil {
-		klog.Errorf("failed to delete pod's static route in default vpc: %v", err)
-	}
 	// The static route for node gw can be deleted when gc static route, so add it after gc process
 	dstIp := "0.0.0.0/0,::/0"
 	if err := c.ovnLegacyClient.AddStaticRoute("", dstIp, c.config.NodeSwitchGateway, c.config.ClusterRouter, util.NormalRouteType); err != nil {

pkg/controller/init.go

@@ -764,35 +764,3 @@ func (c *Controller) initHtbQos() error {
 	}
 	return err
 }
-
-func (c *Controller) initDeleteOverlayPodsStaticRoutes() error {
-	pods, err := c.podsLister.List(labels.Everything())
-	if err != nil {
-		klog.Errorf("failed to list pods: %v", err)
-		return err
-	}
-	for _, pod := range pods {
-		if pod.Spec.HostNetwork {
-			continue
-		}
-		podNets, err := c.getPodKubeovnNets(pod)
-		if err != nil {
-			klog.Errorf("failed to get pod kubeovn nets %s.%s address %s: %v", pod.Name, pod.Namespace, pod.Annotations[util.IpAddressAnnotation], err)
-			continue
-		}
-		for _, podNet := range podNets {
-			if !isOvnSubnet(podNet.Subnet) || podNet.Subnet.Spec.Vpc != util.DefaultVpc || podNet.Subnet.Spec.Vlan != "" || podNet.Subnet.Spec.GatewayType != kubeovnv1.GWDistributedType {
-				continue
-			}
-			if pod.Annotations[fmt.Sprintf(util.AllocatedAnnotationTemplate, podNet.ProviderName)] == "true" {
-				for _, podIP := range strings.Split(pod.Annotations[fmt.Sprintf(util.IpAddressAnnotationTemplate, podNet.ProviderName)], ",") {
-					if err := c.ovnLegacyClient.DeleteStaticRoute(podIP, podNet.Subnet.Spec.Vpc); err != nil {
-						return err
-					}
-				}
-			}
-		}
-	}
-
-	return nil
-}