Deprecate running krkn as kubernetes app

This commit removes the instructions on running krkn as kubernetes
deployment as it is not supported/maintained and also not recommended.

Signed-off-by: Naga Ravi Chaitanya Elluri <nelluri@redhat.com>

containers/README.md

@@ -12,35 +12,3 @@ Refer [instructions](https://github.com/redhat-chaos/krkn/blob/main/docs/install
 ### Run Custom Kraken Image
 
 Refer to [instructions](https://github.com/redhat-chaos/krkn/blob/main/containers/build_own_image-README.md) for information on how to run a custom containerized version of kraken using podman.
-
-
-### Kraken as a KubeApp ( Unsupported and not recommended )
-
-#### GENERAL NOTES:
-
-- It is not generally recommended to run Kraken internal to the cluster as the pod which is running Kraken might get disrupted, the suggested use case to run kraken from inside k8s/OpenShift is to target **another** cluster (eg. to bypass network restrictions or to leverage cluster's computational resources)
-
-- your kubeconfig might contain several cluster contexts and credentials so be sure, before creating the ConfigMap, to keep **only** the credentials related to the destination cluster. Please refer to the [Kubernetes documentation](https://kubernetes.io/docs/tasks/access-application-cluster/configure-access-multiple-clusters/) for more details
-- to add privileges to the service account you must be logged in the cluster with an highly privileged account (ideally kubeadmin)
-
-  
-
-To run containerized Kraken as a Kubernetes/OpenShift Deployment, follow these steps:
-
-1. Configure the [config.yaml](https://github.com/redhat-chaos/krkn/blob/main/config/config.yaml) file according to your requirements.
-
-**NOTE**: both the scenarios ConfigMaps are needed regardless you're running kraken in Kubernetes or OpenShift
-
-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>`  *(eg. ~/.kube/config)*
-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_kraken>/scenarios`
-7. Create a ConfigMap named scenarios-openshift-config using `kubectl create configmap scenarios-openshift-config --from-file=<path_to_kraken>/scenarios/openshift`
-8. Create a ConfigMap named scenarios-kube-config using `kubectl create configmap scenarios-kube-config --from-file=<path_to_kraken>/scenarios/kube` 
-9. Create a service account to run the kraken pod `kubectl create serviceaccount useroot`.
-10.  In Openshift, add privileges to service account and execute `oc adm policy add-scc-to-user privileged -z useroot`.
-11.  Create a Job using `kubectl apply -f <path_to_kraken>/containers/kraken.yml` and monitor the status using `oc get jobs` and `oc get pods`.

containers/kraken.yml

@@ -1,49 +0,0 @@
----
-apiVersion: batch/v1
-kind: Job
-metadata:
-  name: kraken
-spec:
-  parallelism: 1
-  completions: 1
-  template:
-    metadata:
-      labels:
-        tool: Kraken
-    spec:
-      serviceAccountName: useroot
-      containers:
-        - name: kraken
-          securityContext:
-            privileged: true
-          image: quay.io/redhat-chaos/krkn
-          command: ["/bin/sh", "-c"]
-          args: ["python3.9 run_kraken.py -c config/config.yaml"]
-          volumeMounts:
-            - mountPath: "/root/.kube"
-              name: config
-            - mountPath: "/root/kraken/config"
-              name: kraken-config
-            - mountPath: "/root/kraken/scenarios"
-              name: scenarios-config
-            - mountPath: "/root/kraken/scenarios/openshift"
-              name: scenarios-openshift-config
-            - mountPath: "/root/kraken/scenarios/kube"
-              name: scenarios-kube-config
-      restartPolicy: Never
-      volumes:
-        - name: config
-          configMap:
-            name: kube-config
-        - name: kraken-config
-          configMap:
-            name: kraken-config
-        - name: scenarios-config
-          configMap:
-            name: scenarios-config
-        - name: scenarios-openshift-config
-          configMap:
-            name: scenarios-openshift-config
-        - name: scenarios-kube-config
-          configMap:
-            name: scenarios-kube-config

docs/installation.md

@@ -43,12 +43,3 @@ $ python3.9 run_kraken.py --config <config_file_location>
 [Krkn-hub](https://github.com/krkn-chaos/krkn-hub) is a wrapper that allows running Krkn chaos scenarios via podman or docker runtime with scenario parameters/configuration defined as environment variables.
 
 Refer [instructions](https://github.com/krkn-chaos/krkn-hub#supported-chaos-scenarios) to get started.
-
-
-### Run Kraken as a Kubernetes deployment ( unsupported option - standalone or containerized deployers are recommended )
-Refer [Instructions](https://github.com/krkn-chaos/krkn/blob/main/containers/README.md) on how to deploy and run Kraken as a Kubernetes/OpenShift deployment.
-
-
-Refer to the [chaos-kraken chart manpage](https://artifacthub.io/packages/helm/startx/chaos-kraken)
-and especially the [kraken configuration values](https://artifacthub.io/packages/helm/startx/chaos-kraken#chaos-kraken-values-dictionary) 
-for details on how to configure this chart.