chore(new_experiment): Add charts for disk io stress experiment (#318)

Signed-off-by: Udit Gaurav <udit.gaurav@mayadata.io>

charts/generic/generic.chartserviceversion.yaml

@@ -32,6 +32,7 @@ spec:
     - pod-autoscaler
     - k8-pod-delete
     - k8-service-kill
+    - node-io-stress
     
   keywords:
     - Kubernetes
@@ -39,6 +40,8 @@ spec:
     - Node
     - Pod
     - Disk
+    - IO
+    - Filesystem
     - Network
     - CPU
     - Memory

charts/generic/generic.package.yaml

@@ -57,3 +57,6 @@ experiments:
   - name: k8-service-kill
     CSV: k8-service-kill.chartserviceversion.yaml
     desc: "k8-service-kill"
+  - name: node-io-stress
+    CSV: node-io-stress.chartserviceversion.yaml
+    desc: "node-io-stress"

charts/generic/node-io-stress/engine.yaml

@@ -0,0 +1,36 @@
+apiVersion: litmuschaos.io/v1alpha1
+kind: ChaosEngine
+metadata:
+  name: nginx-chaos
+  namespace: default
+spec:
+  # It can be true/false
+  annotationCheck: 'false'
+  # It can be active/stop
+  engineState: 'active'
+  #ex. values: ns1:name=percona,ns2:run=nginx 
+  auxiliaryAppInfo: ''
+  appinfo:
+    appns: 'default'
+    applabel: 'app=nginx'
+    appkind: 'deployment'
+  chaosServiceAccount: node-io-stress-sa
+  monitoring: false
+  # It can be delete/retain
+  jobCleanUpPolicy: 'delete'
+  experiments:
+    - name: node-io-stress
+      spec:
+        components:
+          env:
+            # set chaos duration (in sec) as desired
+            - name: TOTAL_CHAOS_DURATION
+              value: '120'
+
+            ## specify the size as percentage of free space on the file system
+            - name: FILESSYSTEM_UTILIZATION_PERCENTAGE
+              value: '10'
+            
+             ## enter the name of the desired node
+            - name: APP_NODE
+              value: ''

charts/generic/node-io-stress/experiment.yaml

@@ -0,0 +1,83 @@
+apiVersion: litmuschaos.io/v1alpha1
+description:
+  message: |
+    Give a memory hog on a node belonging to a deployment
+kind: ChaosExperiment
+metadata:
+  name: node-io-stress
+spec:
+  definition:
+    scope: Cluster
+    permissions:
+      - apiGroups:
+          - ""
+          - "batch"
+          - "apps"
+          - "litmuschaos.io"
+        resources:
+          - "jobs"
+          - "pods"
+          - "pods/log"
+          - "events"
+          - "chaosengines"
+          - "chaosexperiments"
+          - "chaosresults"
+        verbs:
+          - "create"
+          - "list"
+          - "get"
+          - "patch"
+          - "update"
+          - "delete"
+      - apiGroups:
+          - ""
+        resources: 
+          - "nodes"
+        verbs:
+          - "get"
+          - "list"
+    image: "litmuschaos/go-runner:latest"
+    imagePullPolicy: Always
+    args:
+    - -c
+    - ./experiments/node-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: FILESSYSTEM_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 FILESSYSTEM_UTILIZATION_PERCENTAGE should be empty
+    - name: FILESSYSTEM_UTILIZATION_BYTES
+      value: ''
+
+    ## Total number of workers default value is 4
+    - name: NUMBER_OF_WORKERS
+      value: '4'    
+
+    ## enter the name of the desired node
+    - name: APP_NODE
+      value: ''    
+
+    # Period to wait before and after injection of chaos in sec
+    - name: RAMP_TIME
+      value: ''
+
+    # Provide the LIB here
+    # Only litmus supported
+    - name: LIB
+      value: 'litmus'
+
+    # provide lib image
+    - name: LIB_IMAGE
+      value: 'litmuschaos/go-runner:latest' 
+      
+    labels:
+      name: node-io-stress

charts/generic/node-io-stress/node-io-stress.chartserviceversion.yaml

@@ -0,0 +1,46 @@
+apiVersion: litmuchaos.io/v1alpha1
+kind: ChartServiceVersion
+metadata:
+  createdAt: 2020-09-12T10:28:08Z
+  name: 
+  version: 0.1.0
+  annotations:
+    categories: Kubernetes
+    vendor: CNCF
+    support: https://slack.kubernetes.io/
+spec:
+  displayName: 
+  categoryDescription: |
+    This experiment causes disk stress on the Kubernetes node. The experiment aims to verify the resiliency of applications that share this disk resource for ephemeral or persistent storage purposes..
+    - Disk stress on a particular node filesystem where the application deployment is available.
+    - The amount of disk stress can be either specifed as the size in percentage of the total free space on the file system or simply in Gigabytes(Gb)
+    - After the test, the recovery should be manual for the application pod and node in case they are not in an appropriate state. 
+  keywords:
+    - Kubernetes
+    - Disk
+    - IO
+    - Filesystem
+    - State 
+    - Node
+  platforms:
+    - GKE
+    - EKS
+  maturity: alpha
+  chaosType: infra
+  maintainers:
+    - name: Udit Gaurav
+      email: udit.gaurav@mayadata.io
+  minKubeVersion: 1.12.0
+  provider:
+    name: Mayadata
+  links:
+    - name: Source Code
+      url: https://github.com/litmuschaos/litmus-go/tree/master/experiments/generic/
+    - name: Documentation
+      url: https://docs.litmuschaos.io/docs//
+    - name: Video
+      url:
+  icon:
+    - url: ""
+      mediatype: ""
+  chaosexpcrdlink: https://raw.githubusercontent.com/litmuschaos/chaos-charts/master/charts/generic//experiment.yaml

charts/generic/node-io-stress/rbac.yaml

@@ -0,0 +1,37 @@
+---
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: node-io-stress-sa
+  namespace: default
+  labels:
+    name: node-io-stress-sa
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRole
+metadata:
+  name: node-io-stress-sa
+  labels:
+    name: node-io-stress-sa
+rules:
+- apiGroups: ["","litmuschaos.io","batch","apps"]
+  resources: ["pods","jobs","pods/log","events","chaosengines","chaosexperiments","chaosresults"]
+  verbs: ["create","list","get","patch","update","delete"]
+- apiGroups: [""]
+  resources: ["nodes"]
+  verbs: ["get","list"]
+---
+apiVersion: rbac.authorization.k8s.io/v1beta1
+kind: ClusterRoleBinding
+metadata:
+  name: node-io-stress-sa
+  labels:
+    name: node-io-stress-sa
+roleRef:
+  apiGroup: rbac.authorization.k8s.io
+  kind: ClusterRole
+  name: node-io-stress-sa
+subjects:
+- kind: ServiceAccount
+  name: node-io-stress-sa
+  namespace: default