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   * Note, node can be tainted with key:<effect> and not value for the key.

k8s/StudyNotes/ Taints & Tolerations

  • Taint's added to Node

    • There is 3 taint effects, for pods with no Toleration for the taint key=value:taint-effect

      1. NoSchedule

      2. PreferNoSchedule

      3. NoExecute => After taint, kills pods on node that cant tolerate taint.

    • Add a taint to a node Node1A 

      kubectl taint nodes node1A app=MyPods:NoSchedule

  • Pods can have Toleration's they can tolerate the taint, and still schedule to a Tainted node.

  • The Master Node, starts with taint 

    kubectl describe node kubemaster | grep Taint

    • Note, node can be tainted with key:<effect> and not value for the key.

k8s/StudyNotes/TaintsAndTolerations (last edited 2021-10-20 07:21:14 by PieterSmit)