扩容节点后pod无法获取到IP，导致CrashLoopBackO

pod一直在CrashLoopBackOff，且没有IP，事件提示pod被改变

kubelet日志提报：
failed to read pod IP from plugin/docker: Couldn't find network status for xxxxxx/xxxxxx through plugin: invalid network status for

kubelet添加--network-plugin并重启后正常
/usr/lib/systemd/system/kubelet.service
--network-plugin=cni
systemctl restart kubelet
ture> The name of the network plugin to be invoked for various events in kubelet/pod lifecycle. This docker-specific flag only works when container-runtime is set to docker.
ture>在kubelet/pod生命周期中为各种事件调用的网络插件的名称。只有当容器运行时设置为docker时，这个特定于docker的标志才起作用。