From d76976cf14607e8ff7864382c4bff93b01d32762 Mon Sep 17 00:00:00 2001
From: hzma <hzma@alauda.io>
Date: Mon, 28 Nov 2022 13:33:03 +0800
Subject: [PATCH] check if externalIds map is nil when add node as gw for
 centralized subnet (#2088)

---
 pkg/controller/node.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/controller/node.go b/pkg/controller/node.go
index 7a7131a8364..43fddc73e89 100644
--- a/pkg/controller/node.go
+++ b/pkg/controller/node.go
@@ -1210,6 +1210,9 @@ func (c *Controller) addPolicyRouteForCentralizedSubnetOnNode(nodeName, nodeIP s
 						continue
 					}
 					nextHops = append(nextHops, nextHop)
+					if nameIpMap == nil {
+						nameIpMap = make(map[string]string, 1)
+					}
 					nameIpMap[nodeName] = nextHop
 
 					if err = c.updatePolicyRouteForCentralizedSubnet(subnet.Name, cidrBlock, nextHops, nameIpMap); err != nil {