Chore(node_label): Add node level env in pod level experiments

Signed-off-by: uditgaurav <udit@chaosnative.com>

charts/generic/container-kill/experiment.yaml

@@ -105,6 +105,10 @@ spec:
     - name: PODS_AFFECTED_PERC
       value: ''
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     - name: LIB_IMAGE  
       value: 'litmuschaos/go-runner:latest' 
 

charts/generic/disk-fill/experiment.yaml

@@ -96,6 +96,10 @@ spec:
     - name: EPHEMERAL_STORAGE_MEBIBYTES
       value: ''
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     ## percentage of total pods to target
     - name: PODS_AFFECTED_PERC
       value: ''

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

@@ -110,6 +110,10 @@ spec:
     - name: TARGET_PODS
       value: ''
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     ## it defines the sequence of chaos execution for multiple target pods
     ## supported values: serial, parallel
     - name: SEQUENCE

charts/generic/pod-delete/experiment.yaml

@@ -90,6 +90,10 @@ spec:
     - name: TARGET_PODS
       value: ''
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     ## it defines the sequence of chaos execution for multiple target pods
     ## supported values: serial, parallel
     - name: SEQUENCE

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

@@ -24,6 +24,10 @@ spec:
             - name: FILESYSTEM_UTILIZATION_PERCENTAGE
               value: '10'
 
+            ## Percentage of total pods to target
+            - name: PODS_AFFECTED_PERC
+              value: ''
+
              ## provide the cluster runtime
             - name: CONTAINER_RUNTIME
               value: 'docker'   

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

@@ -94,6 +94,10 @@ spec:
 
       ## 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

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

@@ -115,6 +115,10 @@ spec:
       - name: TARGET_PODS
         value: ''
 
+      # To select pods on specific node(s)
+      - name: NODE_LABEL
+        value: ''
+
     labels:
       name: pod-memory-hog
       app.kubernetes.io/part-of: litmus

charts/generic/pod-network-corruption/experiment.yaml

@@ -101,6 +101,10 @@ spec:
     - name: TARGET_PODS
       value: ''
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     # provide the name of container runtime
     # for litmus LIB, it supports docker, containerd, crio
     # for pumba LIB, it supports docker only

charts/generic/pod-network-duplication/experiment.yaml

@@ -89,7 +89,11 @@ spec:
       value: 'litmus'   
 
     - name: TARGET_PODS
-      value: ''   
+      value: ''  
+
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: '' 
 
     ## percentage of total pods to target
     - name: PODS_AFFECTED_PERC

charts/generic/pod-network-latency/experiment.yaml

@@ -124,6 +124,10 @@ spec:
     - name: SOCKET_PATH
       value: '/var/run/docker.sock'
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     ## it defines the sequence of chaos execution for multiple target pods
     ## supported values: serial, parallel
     - name: SEQUENCE

charts/generic/pod-network-loss/experiment.yaml

@@ -101,6 +101,10 @@ spec:
     - name: TARGET_PODS
       value: ''
 
+    # To select pods on specific node(s)
+    - name: NODE_LABEL
+      value: ''
+
     # provide the name of container runtime
     # for litmus LIB, it supports docker, containerd, crio
     # for pumba LIB, it supports docker only