操作系统信息
Centos7.9，4C/16G
内核版本：5.15.5
Kubernetes版本信息
v1.20.4。多节点高可用。3个master节点
容器运行时
docker版本：20.10.11
KubeSphere版本信息
v3.1.0。离线安装，全套安装。
问题是什么
v3.1.0离线全套安装时，master节点一直NotReady，检查结果如下：
Lease:
HolderIdentity: paas-server01
AcquireTime: <unset>
RenewTime: Fri, 03 Dec 2021 09:10:51 +0800
Conditions:
Type Status LastHeartbeatTime LastTransitionTime Reason Message
—
MemoryPressure False Fri, 03 Dec 2021 09:08:42 +0800 Fri, 03 Dec 2021 09:08:15 +0800 KubeletHasSufficientMemory kubelet has sufficient memory available
DiskPressure False Fri, 03 Dec 2021 09:08:42 +0800 Fri, 03 Dec 2021 09:08:15 +0800 KubeletHasNoDiskPressure kubelet has no disk pressure
PIDPressure False Fri, 03 Dec 2021 09:08:42 +0800 Fri, 03 Dec 2021 09:08:15 +0800 KubeletHasSufficientPID kubelet has sufficient PID available
Ready False Fri, 03 Dec 2021 09:08:42 +0800 Fri, 03 Dec 2021 09:08:15 +0800 KubeletNotReady runtime network not ready: NetworkReady=false reason:NetworkPluginNotReady message:docker: network plugin is not ready: cni config uninitialized
