k8s 节点状态

k8s 节点状态

1.1 k8s集群节点状态变成NotReady，SchedulingDisabled

# kubectl get node                                                                                
NAME       STATUS                        ROLES    AGE    VERSION
master-1   NotReady                      <none>   2d1h   v1.18.6
node-3     NotReady                      <none>   47h    v1.18.6
node-4     NotReady,SchedulingDisabled   <none>   2d     v1.18.6
node-5     NotReady,SchedulingDisabled   <none>   47h    v1.18.6

解决:
NotReady，是因为kubelet服务与kube-apiserver没有正常通信，需要检查kube-apiserver，kubelet服务是否正常。
SchedulingDisabled，是因为节点被隔离，需要uncordon节点

# systemctl stop kube-apiserver
# systemctl start kube-apiserver
# systemctl restart kubelet
# kubectl uncordon node-4