Adding kraken containerization with readme instructions

containers/README.md

@@ -4,3 +4,21 @@ Container image gets automatically built by quay.io at [Kraken image](https://qu
 
 ### Run containerized version
 Refer [instructions](https://github.com/openshift-scale/kraken#Run-containerized-version) for information on how to run the containerized version of kraken.
+
+
+### Kraken as a KubeApp
+
+To run containerized Kraken as a Kubernetes/OpenShift Deployment, follow these steps:
+1. Configure the [config.yaml](https://github.com/openshift-scale/kraken/tree/master/config/config.yaml) file according to your requirements.
+2. Create a namespace under which you want to run the kraken pod using `kubectl create ns <namespace>`.
+3. Switch to `<namespace>` namespace:
+    - In Kubernetes, use `kubectl config set-context --current --namespace=<namespace>`
+    - In OpenShift, use `oc project <namespace>`
+4. Create a ConfigMap named kube-config using `kubectl create configmap kube-config --from-file=<path_to_kubeconfig>`
+5. Create a ConfigMap named kraken-config using `kubectl create configmap kraken-config --from-file=<path_to_kraken_config>`
+6. Create a ConfigMap named scenarios-config using `kubectl create configmap scenarios-config --from-file=<path_to_scenarios_folder>`
+7. Create a serviceaccount to run the kraken pod `kubectl create serviceaccount useroot`.
+8. In Openshift, add privileges to service account and execute `oc adm policy add-scc-to-user privileged -z useroot`.
+9. Create a Deployment and a NodePort Service using `kubectl apply -f kraken.yml`
+
+NOTE: It is not recommended to run Kraken internal to the cluster as the pod which is running Kraken might get disrupted.

containers/kraken.yml

@@ -0,0 +1,42 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: kraken-deployment
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      tool: Kraken
+  template:
+    metadata:
+      labels:
+        tool: Kraken
+    spec:
+      serviceAccountName: useroot
+      containers:
+        - name: kraken
+          securityContext:
+            privileged: true
+          image: quay.io/openshift-scale/kraken
+          command: ["/bin/sh", "-c"]
+          args: ["python3 run_kraken.py -c config/config.yaml"]
+          ports:
+            - containerPort: 8080
+          volumeMounts:
+            - mountPath: "/root/.kube"
+              name: config
+            - mountPath: "/root/kraken/config"
+              name: kraken-config
+            - mountPath: "/root/kraken/scenarios"
+              name: scenarios-config
+      volumes:
+        - name: config
+          configMap:
+            name: kube-config
+        - name: kraken-config
+          configMap:
+            name: kraken-config
+        - name: scenarios-config
+          configMap:
+            name: scenarios-config