k8s集群管理注意要点【持续更新】

1.编写pod yaml文件时绑定调度标签，必须要给指定节点绑定标签，否则无法调度到指定节点上，报错：

Events:
  Type     Reason            Age                From               Message
  ----     ------            ----               ----               -------
  Warning  FailedScheduling  62s (x2 over 62s)  default-scheduler  / nodes are available:  node(s) didn't have free ports for the requested pod ports, 1 node(s) didn't match node selector.

给节点绑定标签：

kubectl label nodes NODE_NAME ingress-name=ingress-true
kubectl label nodes NODE_NAME name=node02 
kubectl get nodes --show-labels 更新标签：kubectl label nodes NODE_NAME name=node00 --overwrite

yaml文件指定调度标签：

    spec:
      hostNetwork: true
      serviceAccountName: nginx-ingress-serviceaccount
      nodeSelector:
        ingress-name: ingress-true
      containers:
        - name: nginx-ingress-controller
          image: lizhenliang/nginx-ingress-controller:0.20.

2.