Fix panic in spidercoordinator informer

Signed-off-by: cyclinder <qifeng.guo@daocloud.io>

pkg/coordinatormanager/coordinator_informer.go

@@ -86,14 +86,18 @@ type CoordinatorController struct {
  Client client.Client
  APIReader client.Reader
 
- CoordinatorLister spiderlisters.SpiderCoordinatorLister
- ConfigmapLister corelister.ConfigMapLister
- ServiceCIDRLister networkingLister.ServiceCIDRLister
+ CoordinatorLister spiderlisters.SpiderCoordinatorLister
+ ConfigmapLister corelister.ConfigMapLister
+ // only not to nil if the k8s serviceCIDR is enabled
+ ServiceCIDRLister networkingLister.ServiceCIDRLister
+ // only not to nil if the cilium multu-pool is enabled
  CiliumIPPoolLister ciliumLister.CiliumPodIPPoolLister
 
- CoordinatorSynced cache.InformerSynced
- ConfigmapSynced cache.InformerSynced
- ServiceCIDRSynced cache.InformerSynced
+ CoordinatorSynced cache.InformerSynced
+ ConfigmapSynced cache.InformerSynced
+ // only not nil if the k8s serviceCIDR is enabled
+ ServiceCIDRSynced cache.InformerSynced
+ // only not to nil if the cilium multu-pool is enabled
  CiliumIPPoolsSynced cache.InformerSynced
 
  Workqueue workqueue.RateLimitingInterface
@@ -505,7 +509,7 @@ func (cc *CoordinatorController) updatePodAndServerCIDR(ctx context.Context, log
  }
 
  if err = cc.updateServiceCIDR(logger, coordCopy); err != nil {
- logger.Sugar().Warn("failed to list the serviceCIDR resources: %v, update service cidr from cluster service cidr", err)
+ logger.Sugar().Infof("failed to list the serviceCIDR resources: %v, update service cidr from cluster service cidr", err)
  coordCopy.Status.ServiceCIDR = k8sServiceCIDR
  }
 
@@ -706,6 +710,10 @@ func (cc *CoordinatorController) fetchCiliumIPPools(coordinator *spiderpoolv2bet
 
 func (cc *CoordinatorController) updateServiceCIDR(logger *zap.Logger, coordCopy *spiderpoolv2beta1.SpiderCoordinator) error {
  // fetch kubernetes ServiceCIDR
+ if cc.ServiceCIDRLister == nil {
+ return fmt.Errorf("the kubernetes serviceCIDR is disabled")
+ }
+
  svcPoolList, err := cc.ServiceCIDRLister.List(labels.NewSelector())
  if err != nil {
  return err