perform nil check on old lb

kubernetes-sigs · Jan 17, 2025 · 440b0c1 · 440b0c1
1 parent 8b8ba05
commit 440b0c1
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/api/v1beta1/azurecluster_validation.go b/api/v1beta1/azurecluster_validation.go
@@ -458,7 +458,7 @@ func validateAPIServerLB(lb *LoadBalancerSpec, old *LoadBalancerSpec, cidrs []st
 				allErrs = append(allErrs, err)
 			}
 
-			if len(old.FrontendIPs) != 0 && old.FrontendIPs[0].PrivateIPAddress != lb.FrontendIPs[0].PrivateIPAddress {
+			if old != nil && len(old.FrontendIPs) != 0 && old.FrontendIPs[0].PrivateIPAddress != lb.FrontendIPs[0].PrivateIPAddress {
 				allErrs = append(allErrs, field.Forbidden(fldPath.Child("name"), "API Server load balancer private IP should not be modified after AzureCluster creation."))
 			}
 		}