stress-memory

Generic memory stress action. Allocates memory via the daemon without pod-level cgroup scoping. Targets nodes directly.

Target kind: Node
Implementation: Daemon (ExecStressChaos with stressorType: memory)
Rollback: Yes — sends CancelChaos to terminate stress-ng

Parameters

Name	Type	Required	Default	Description
workers	string	No	"1"	Number of memory stress worker threads
size	string	No	"256m"	Memory to allocate per worker (e.g. 256m, 1g)
duration	string	No	experiment duration	How long to run stress

Example

apiVersion: chaos.chaosplane.io/v1alpha1
kind: ChaosExperiment
metadata:
  name: stress-memory-example
  namespace: chaosplane
spec:
  target:
    kind: Node
    labelSelector:
      matchLabels:
        node-role.kubernetes.io/worker: ""
  action:
    type: stress-memory
    parameters:
      workers: "1"
      size: "1g"
      duration: "60s"
  duration: 60s
  rollback:
    enabled: true

Rollback behavior

Sends CancelChaos RPC to the daemon, which terminates the stress-ng process and releases the allocated memory.

Implementation notes

This is the generic stress-memory action registered in the executor registry. It runs at the node level, not scoped to a pod's cgroup. All pods on the node compete for the remaining memory. Use pod-memory-stress if you want memory stress scoped to a specific pod's cgroup and subject to its memory limits.