版本:ks 2.1.1
系统版本centos 7.5
因为部署的比较早，quay.azk8s.cn的镜像无法拉取，所以在官网拉取了最新的kubesphere-all-v2.1.1/k8s/roles/download/defaults/main.yml 替换了本地的main.yml，重新执行add-nodes后发现新节点的flannel均启动异常：
#flannel的异常日志：
I1023 03:07:47.110901 1 main.go:514] Determining IP address of default interface
I1023 03:07:47.111495 1 main.go:527] Using interface with name eth0 and address 192.168.23.17
I1023 03:07:47.111532 1 main.go:544] Defaulting external address to interface address (192.168.23.17)
E1023 03:07:50.208180 1 main.go:241] Failed to create SubnetManager: error retrieving pod spec for 'kube-system/kube-flannel-qmvq8': Get https://10.233.0.1:443/api/v1/namespaces/kube-system/pods/kube-flannel-qmvq8: dial tcp 10.233.0.1:443: connect: connection timed out
