k8s去除污点节点

现象

# 查看节点详情
kubectl describe pods nginx-7b7485646b-n9f8g  -n default  

################报错信息##############

Node-Selectors:                                                                                                          
Tolerations:                 node.kubernetes.io/not-ready:NoExecute op=Exists for 300s                                         
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s                                       
Events:                                                                                                                        
  Type     Reason            Age    From               Message                                                                 
  ----     ------            ----   ----               -------                                                                 
  Warning  FailedScheduling  2m54s  default-scheduler  0/1 nodes are available: 1 node(s) had untolerated taint {node-role.kubernetes.io/control-plane: }. 
preemption: 0/1 nodes are available: 1 Preemption is not helpful for scheduling..

解决

root@k8s:~# kubectl describe nodes |grep Taints                                                                                                      
Taints:             node-role.kubernetes.io/control-plane:NoSchedule                                                                                 
                                                                                                                                                                                        
root@k8s:~# kubectl get node                                                                                                                         
NAME   STATUS   ROLES           AGE     VERSION                                                                                                      
k8s    Ready    control-plane   4h22m   v1.26.5                                                                                                      
root@k8s:~# kubectl taint nodes k8s  node-role.kubernetes.io/control-plane-