---
apiVersion: litmuschaos.io/v1alpha1
description:
  message: |
    Give a CPU spike on a node belonging to a deployment
kind: ChaosExperiment
metadata:
  name: node-cpu-hog
  labels:
    name: node-cpu-hog
    app.kubernetes.io/part-of: litmus
    app.kubernetes.io/component: chaosexperiment
    app.kubernetes.io/version: ci
spec:
  definition:
    scope: Cluster
    permissions:
      # Create and monitor the experiment & helper pods
      - apiGroups: [""]
        resources: ["pods"]
        verbs:
          [
            "create",
            "delete",
            "get",
            "list",
            "patch",
            "update",
            "deletecollection",
          ]
      # Performs CRUD operations on the events inside chaosengine and chaosresult
      - apiGroups: [""]
        resources: ["events"]
        verbs: ["create", "get", "list", "patch", "update"]
      # Fetch configmaps details and mount it to the experiment pod (if specified)
      - apiGroups: [""]
        resources: ["configmaps"]
        verbs: ["get", "list"]
      # Track and get the runner, experiment, and helper pods log
      - apiGroups: [""]
        resources: ["pods/log"]
        verbs: ["get", "list", "watch"]
      # for creating and managing to execute commands inside target container
      - apiGroups: [""]
        resources: ["pods/exec"]
        verbs: ["get", "list", "create"]
      # for configuring and monitor the experiment job by the chaos-runner pod
      - apiGroups: ["batch"]
        resources: ["jobs"]
        verbs: ["create", "list", "get", "delete", "deletecollection"]
      # for creation, status polling and deletion of litmus chaos resources used within a chaos workflow
      - apiGroups: ["litmuschaos.io"]
        resources: ["chaosengines", "chaosexperiments", "chaosresults"]
        verbs: ["create", "list", "get", "patch", "update", "delete"]
      # for experiment to perform node status checks
      - apiGroups: [""]
        resources: ["nodes"]
        verbs: ["get", "list"]
    image: "litmuschaos.docker.scarf.sh/litmuschaos/go-runner:latest"
    imagePullPolicy: Always
    args:
      - -c
      - ./experiments -name node-cpu-hog
    command:
      - /bin/bash
    env:
      - name: TOTAL_CHAOS_DURATION
        value: "60"

      # Period to wait before and after injection of chaos in sec
      - name: RAMP_TIME
        value: ""

      ## ENTER THE NUMBER OF CORES OF CPU FOR CPU HOGGING
      ## OPTIONAL VALUE IN CASE OF EMPTY VALUE IT WILL TAKE NODE CPU CAPACITY
      - name: NODE_CPU_CORE
        value: ""

      ## LOAD CPU WITH GIVEN PERCENT LOADING FOR THE CPU STRESS WORKERS.
      ## 0 IS EFFECTIVELY A SLEEP (NO LOAD) AND 100 IS FULL LOADING
      - name: CPU_LOAD
        value: "100"

      # ENTER THE COMMA SEPARATED TARGET NODES NAME
      - name: TARGET_NODES
        value: ""

      - name: NODE_LABEL
        value: ""

      # provide lib image
      - name: LIB_IMAGE
        value: "litmuschaos.docker.scarf.sh/litmuschaos/go-runner:latest"

      ## percentage of total nodes to target
      - name: NODES_AFFECTED_PERC
        value: ""

      - name: DEFAULT_HEALTH_CHECK
        value: "false"

      ## it defines the sequence of chaos execution for multiple target nodes
      ## supported values: serial, parallel
      - name: SEQUENCE
        value: "parallel"

    labels:
      name: node-cpu-hog
      app.kubernetes.io/part-of: litmus
      app.kubernetes.io/component: experiment-job
      app.kubernetes.io/version: ci