node-taint

Adds a taint to target nodes. Pods without a matching toleration will be evicted (NoExecute) or not scheduled (NoSchedule).

Target kind: Node
Implementation: Kubernetes API (no daemon)
Rollback: Yes — removes the taint from the node

Parameters

Name	Type	Required	Default	Description
key	string	Yes	—	Taint key
value	string	No	""	Taint value
effect	string	Yes	—	NoSchedule, NoExecute, or PreferNoSchedule

Example

apiVersion: chaos.chaosplane.io/v1alpha1
kind: ChaosExperiment
metadata:
  name: node-taint-example
  namespace: chaosplane
spec:
  target:
    kind: Node
    names:
      - worker-node-1
  action:
    type: node-taint
    parameters:
      key: "chaos.chaosplane.io/test"
      value: "true"
      effect: "NoSchedule"
  duration: 2m
  rollback:
    enabled: true

Rollback behavior

Removes the taint by filtering it out of node.Spec.Taints and updating the node via the Kubernetes API. Only the taint with the matching key and effect is removed.

Implementation notes

Uses the Kubernetes API directly. The operation is idempotent: if a taint with the same key and effect already exists, it's skipped. Valid effects are NoSchedule, NoExecute, and PreferNoSchedule. Both key and effect are required and validated before execution.