Chaos engineering mode can only be enabled for node groups with nodeType: CloudEphemeral.

Enable chaos engineering mode for a node group in one of the following ways:

  1. Define the spec.chaos parameter in the configuration of the target node group with two nested parameters:

    chaos:
  mode: DrainAndDelete
  period: 24h

    Where:

    • mode: Operation mode. Two options are available:
      • DrainAndDelete: When triggered, drains the node and deletes it.
      • Disabled: Skips this specific node group.
    • period: Chaos Monkey trigger interval. Defined as a string with hours and minutes: 30m, 1h, 2h30m, 24h.

    Example configuration for a node group:

    # NodeGroup for cloud nodes in AWS.
apiVersion: deckhouse.io/v1
kind: NodeGroup
metadata:
  name: test
spec:
  nodeType: CloudEphemeral
  chaos:
    mode: DrainAndDelete
    period: 24h

  2. If the console module is enabled in the cluster, open the Deckhouse web UI, go to the settings of the desired node group under Nodes — Node Groups, and enable Chaos Monkey in the Chaos monkey settings section by specifying the time intervals in the corresponding fields.