experiment.yaml

apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  name: argowf-chaos-pod-memory-hog
  namespace: litmus
  labels:
    subject: "{{workflow.parameters.appNamespace}}_kube-proxy"
spec:
  entrypoint: argowf-chaos
  serviceAccountName: argo-chaos
  securityContext:
    runAsUser: 1000
    runAsNonRoot: true
  arguments:
    parameters:
      - name: adminModeNamespace
        value: "litmus"
      - name: appNamespace
        value: "kube-system"
  templates:
    - name: argowf-chaos
      steps:
        - - name: install-chaos-faults
            template: install-chaos-faults
        - - name: run-chaos
            template: run-chaos
        - - name: cleanup-chaos-resources
            template: cleanup-chaos-resources

    - name: install-chaos-faults
      inputs:
        artifacts:
          - name: install-chaos-faults
            path: /tmp/pod-memory-hog.yaml
            raw:
              data: |
                apiVersion: litmuschaos.io/v1alpha1
                description:
                  message: |
                    Injects memory consumption on pods belonging to an app deployment
                kind: ChaosExperiment
                metadata:
                  name: pod-memory-hog
                spec:
                  definition:
                    scope: Namespaced
                    permissions:
                      - apiGroups:
                          - ""
                          - "batch"
                          - "litmuschaos.io"
                        resources:
                          - "jobs"
                          - "pods"
                          - "pods/log"
                          - "events"
                          - "chaosengines"
                          - "chaosexperiments"
                          - "chaosresults"
                        verbs:
                          - "create"
                          - "list"
                          - "get"
                          - "patch"
                          - "update"
                          - "delete"
                    image: "litmuschaos.docker.scarf.sh/litmuschaos/go-runner:3.11.0"
                    args:
                    - -c
                    - ./experiments -name pod-memory-hog
                    command:
                    - /bin/bash
                    env:
                      - name: TOTAL_CHAOS_DURATION
                        value: '30'

                      - name: CHAOS_INTERVAL
                        value: '10'

                      ## enter the amount of memory in megabytes to be consumed by the application pod
                      - name: MEMORY_CONSUMPTION
                        value: '500'

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

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

                      - name: TARGET_POD
                        value: ''

                    labels:
                      name: pod-memory-hog
      container:
        image: litmuschaos/k8s:latest
        command: [sh, -c]
        args:
          [
            "kubectl apply -f /tmp/pod-memory-hog.yaml -n {{workflow.parameters.adminModeNamespace}}",
          ]

    - name: run-chaos
      inputs:
        artifacts:
          - name: run-chaos
            path: /tmp/chaosengine.yaml
            raw:
              data: |
                apiVersion: litmuschaos.io/v1alpha1
                kind: ChaosEngine
                metadata:
                  name: kube-proxy-pod-memory-hog-chaos
                  namespace: "{{workflow.parameters.adminModeNamespace}}"
                  labels:
                    context: "{{workflow.parameters.appNamespace}}_kube-proxy"
                  annotations: {}
                spec:
                  appinfo:
                    appns: kube-system
                    applabel: "k8s-app=kube-proxy"
                    appkind: daemonset
                  jobCleanUpPolicy: retain
                  engineState: 'active'
                  chaosServiceAccount: litmus-admin
                  experiments:
                    - name: pod-memory-hog
                      spec:
                        components:
                          env:
                            - name: TARGET_CONTAINER
                              value: 'kube-proxy'

                            - name: MEMORY_CONSUMPTION
                              value: '500'

                            - name: TOTAL_CHAOS_DURATION
                              value: '60' # in seconds

                            - name: CHAOS_KILL_COMMAND
                              value: "kill -9 $(ps afx | grep \"[dd] if /dev/zero\" | awk '{print $1}' | tr '\n' ' ')"
      container:
        image: litmuschaos/litmus-checker:latest
        args: ["-file=/tmp/chaosengine.yaml", "-saveName=/tmp/engine-name"]

    - name: cleanup-chaos-resources
      container:
        image: litmuschaos/k8s:latest
        command: [sh, -c]
        args:
          [
            "kubectl delete chaosengine kube-proxy-pod-memory-hog-chaos -n {{workflow.parameters.adminModeNamespace}}",
          ]