频繁更新主机，导致 pod ip 不够解决方法

Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "7d85968dde0c359cdf3da441b2d516a5dec9b7bd30c6db86a63fab4b4d4a97e9": failed to delegate add: failed to allocate for range 0: no IP addresses available in range set: 10.88.0.1-10.88.0.254

报错内容如上，解决方法是：

cd /var/lib/cni/networksrm -f [kubernetes中没有pod正在使用的ip]# 重新查看 pod 状态应该就从 containerinit 转换为了 runnning，因为分配到 ip 了