chore(infra-chaos): Adding node-aff-perc & sequence in node-level chaos (#359)

Signed-off-by: shubhamchaudhary <shubham.chaudhary@mayadata.io>

charts/generic/kubelet-service-kill/engine.yaml

@@ -30,5 +30,5 @@ spec:
               value: '90' # in seconds
               
              # provide the actual name of node under test
-            - name: APP_NODE
+            - name: TARGET_NODE
               value: 'node-01'

charts/generic/kubelet-service-kill/experiment.yaml

@@ -65,7 +65,7 @@ spec:
       value: 'ubuntu:16.04' 
             
     # provide node name
-    - name: APP_NODE
+    - name: TARGET_NODE
       value: ''
 
     labels:

charts/generic/node-cpu-hog/engine.yaml

@@ -31,5 +31,5 @@ spec:
               value: ''
             
              # ENTER THE NAME OF THE APPLICATION NODE
-            - name: APP_NODE
+            - name: TARGET_NODE
               value: ''

charts/generic/node-cpu-hog/experiment.yaml

@@ -62,8 +62,8 @@ spec:
     - name: NODE_CPU_CORE
       value: ''
 
-    # ENTER THE NAME OF THE APPLICATION NODE
-    - name: APP_NODE
+    # ENTER THE NAME OF THE TARGET NODE
+    - name: TARGET_NODE
       value: ''
 
     # PROVIDE THE LIB HERE
@@ -74,6 +74,15 @@ spec:
     # provide lib image
     - name: LIB_IMAGE
       value: 'litmuschaos/go-runner:latest' 
+
+    ## percentage of total nodes to target
+    - name: NODES_AFFECTED_PERC
+      value: ''
+
+    ## it defines the sequence of chaos execution for multiple target nodes
+    ## supported values: serial, parallel
+    - name: SEQUENCE
+      value: 'parallel'
    
     labels:
       name: node-cpu-hog

charts/generic/node-drain/engine.yaml

@@ -27,5 +27,5 @@ spec:
             kubernetes.io/hostname: 'node02'        
           env:
             # set node name
-            - name: APP_NODE
+            - name: TARGET_NODE
               value: 'node-01'

charts/generic/node-drain/experiment.yaml

@@ -55,7 +55,7 @@ spec:
     - /bin/bash
     env:
     
-    - name: APP_NODE
+    - name: TARGET_NODE
       value: ''
 
     - name: TOTAL_CHAOS_DURATION
@@ -69,7 +69,7 @@ spec:
     # Period to wait before and after injection of chaos in sec
     - name: RAMP_TIME
       value: ''
-
+      
     labels:
       name: node-drain
       app.kubernetes.io/part-of: litmus

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

@@ -32,5 +32,5 @@ spec:
               value: '10'
             
              ## enter the name of the desired node
-            - name: APP_NODE
+            - name: TARGET_NODE
               value: ''

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

@@ -67,8 +67,8 @@ spec:
     - name: NUMBER_OF_WORKERS
       value: '4'    
 
-    ## enter the name of the desired node
-    - name: APP_NODE
+    ## enter the name of the target node
+    - name: TARGET_NODE
       value: ''    
 
     # Period to wait before and after injection of chaos in sec
@@ -83,6 +83,15 @@ spec:
     # provide lib image
     - name: LIB_IMAGE
       value: 'litmuschaos/go-runner:latest' 
+
+    ## percentage of total nodes to target
+    - name: NODES_AFFECTED_PERC
+      value: ''
+
+    ## it defines the sequence of chaos execution for multiple target nodes
+    ## supported values: serial, parallel
+    - name: SEQUENCE
+      value: 'parallel'
       
     labels:
       name: node-io-stress

charts/generic/node-memory-hog/engine.yaml

@@ -32,6 +32,6 @@ spec:
             - name: MEMORY_PERCENTAGE
               value: '90'
             
-             # ENTER THE NAME OF THE APPLICATION NODE
-            - name: APP_NODE
+             # ENTER THE NAME OF THE TARGET NODE
+            - name: TARGET_NODE
               value: ''

charts/generic/node-memory-hog/experiment.yaml

@@ -58,8 +58,8 @@ spec:
     - name: MEMORY_PERCENTAGE
       value: '90'    
 
-     # ENTER THE NAME OF THE APPLICATION NODE
-    - name: APP_NODE
+     # ENTER THE NAME OF THE TARGET NODE
+    - name: TARGET_NODE
       value: ''    
 
     # Period to wait before and after injection of chaos in sec
@@ -74,6 +74,15 @@ spec:
     # provide lib image
     - name: LIB_IMAGE
       value: 'litmuschaos/go-runner:latest' 
+
+    ## percentage of total nodes to target
+    - name: NODES_AFFECTED_PERC
+      value: ''
+
+    ## it defines the sequence of chaos execution for multiple target nodes
+    ## supported values: serial, parallel
+    - name: SEQUENCE
+      value: 'parallel'
       
     labels:
       name: node-memory-hog

charts/generic/node-taint/engine.yaml

@@ -27,7 +27,7 @@ spec:
             kubernetes.io/hostname: 'node02'        
           env:
             # set node name
-            - name: APP_NODE
+            - name: TARGET_NODE
               value: 'node-01'
               
              # set taint label & effect

charts/generic/node-taint/experiment.yaml

@@ -55,7 +55,7 @@ spec:
     - /bin/bash
     env:
 
-    - name: APP_NODE
+    - name: TARGET_NODE
       value: ''
 
     - name: TOTAL_CHAOS_DURATION