---
apiVersion: litmuschaos.io/v1alpha1
description:
  message: |
    IO stress on a app pods belonging to an app deployment
kind: ChaosExperiment
metadata:
  name: pod-io-stress
  labels:
    name: pod-io-stress
    app.kubernetes.io/part-of: litmus
    app.kubernetes.io/component: chaosexperiment
    app.kubernetes.io/version: latest
spec:
  definition:
    scope: Namespaced
    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 comands inside target container
      - apiGroups: [""]
        resources: ["pods/exec"]
        verbs: ["get","list","create"]
      # deriving the parent/owner details of the pod(if parent is anyof {deployment, statefulset, daemonsets})
      - apiGroups: ["apps"]
        resources: ["deployments","statefulsets","replicasets", "daemonsets"]
        verbs: ["list","get"]
      # deriving the parent/owner details of the pod(if parent is deploymentConfig)  
      - apiGroups: ["apps.openshift.io"]
        resources: ["deploymentconfigs"]
        verbs: ["list","get"]
      # deriving the parent/owner details of the pod(if parent is deploymentConfig)
      - apiGroups: [""]
        resources: ["replicationcontrollers"]
        verbs: ["get","list"]
      # deriving the parent/owner details of the pod(if parent is argo-rollouts)
      - apiGroups: ["argoproj.io"]
        resources: ["rollouts"]
        verbs: ["list","get"]
      # 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"]
    image: "litmuschaos/go-runner:ci"
    imagePullPolicy: Always
    args:
    - -c
    - ./experiments -name pod-io-stress
    command:
    - /bin/bash
    env:
      - name: TOTAL_CHAOS_DURATION
        value: '120'

      ## specify the size as percentage of free space on the file system
      ## default value 90 (in percentage)
      - name: FILESYSTEM_UTILIZATION_PERCENTAGE
        value: '10'

      ## we can specify the size in Gigabyte (Gb) also in place of percentage of free space
      ## NOTE: for selecting this option FILESYSTEM_UTILIZATION_PERCENTAGE should be empty
      - name: FILESYSTEM_UTILIZATION_BYTES
        value: ''

      ## Total number of workers default value is 4
      - name: NUMBER_OF_WORKERS
        value: '4'    

      ## Percentage of total pods to target
      - name: PODS_AFFECTED_PERC
        value: ''    

      # provide volume mount path
      - name: VOLUME_MOUNT_PATH
        value: ''

      ## specify the comma separated target pods
      - name: TARGET_PODS
        value: ''

      # To select pods on specific node(s)
      - name: NODE_LABEL
        value: ''    

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

      # Provide the LIB here
      # support litmus and pumba
      - name: LIB
        value: 'litmus'

      # provide lib image
      - name: LIB_IMAGE
        value: 'litmuschaos/go-runner:ci'

      ## provide the cluster runtime
      - name: CONTAINER_RUNTIME
        value: 'docker'   

      # provide the socket file path
      - name: SOCKET_PATH
        value: '/var/run/docker.sock'         

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

    labels:
      name: pod-io-stress
      app.kubernetes.io/part-of: litmus
      app.kubernetes.io/component: experiment-job
      app.kubernetes.io/runtime-api-usage: "true" 
      app.kubernetes.io/version: latest