Warning FailedScheduling 8s default-scheduler 0/3 nodes are available: 1 Insufficient memory

问题

ka get pod -o wide

ka describe pod oracle-265abd451-0

Pod无法调度

Warning FailedScheduling 8s default-scheduler 0/3 nodes are available: 1 Insufficient memory, 1 node(s) had taint {node.kubernetes.io/not-ready: }, that the pod didn’t tolerate, 1 node(s) had volume node affinity conflict.

默认调度程序0/3个节点可用：1个内存不足，1个节点具有pod无法容忍的污点{node.kubernetes.io/not-ready:}，1个节点具有卷节点亲和力冲突。

排查思路

查看节点状态：发现有一个节点NotReady

k get node

查看标签

k get nodes --show-labels

查看污点

k get node -o yaml |grep taint -A 5
          f:taints: {
    }
      manager: kube-controller-manager
      operation: Update
      time: "2022-07-19T12:49:26Z"
    name: x-x-x-x
    resourceVersion: "233927"
--
    taints:
    - effect: NoSchedule
      key: node.kubernetes.io/not-ready
      timeAdded: "2022-07-19T12:49:26Z"
    - effect: NoExecute
      key: node.kubernetes.io/not-ready
--
          f:taints: {
    }
        f:status:
          f:conditions:
            k:{
    "type":"DiskPressure"}:
              f:lastTransitionTime: {
    }
              f:message: {
    }
--
    taints:
    - effect: NoSchedule
      key: node.kubernetes.io/unreachable
      timeAdded: "2022-07-19T12:45:33Z"
    - effect: NoExecute
      key: node.kubernetes.io/unreachable

kubectl taint nodes node{
    1,2,3} node-role.kubernetes.io/master:NoSchedule

清除污点

k taint nodes --all node-role.kubernetes.io/master-
taint "node-role.kubernetes.io/master" not found
taint "node-role.kubernetes.io/master" not found
taint "node-role.kubernetes.io/master" not found

k get node -o yaml |grep taint -A 5 

没了。。。

重启Pod后正常。。。