This scenario deletes a namespace in your Kubernetes/OpenShift cluster. More information can be found here.
If enabling Cerberus to monitor the cluster and pass/fail the scenario post chaos, refer docs. Make sure to start it before injecting the chaos and set CERBERUS_ENABLED environment variable for the chaos injection container to autoconnect.
$ podman run --name=<container_name> --net=host --env-host=true -v <path-to-kube-config>:/root/.kube/config:Z -d quay.io/redhat-chaos/krkn-hub:namespace-scenarios
# podman logs -f <container_name or container_id> # Streams Kraken logs
$ podman inspect <container-name or container-id> --format "{{.State.ExitCode}}" # Outputs exit code which can considered as pass/fail for the scenario
$ docker run $(./get_docker_params.sh) --name=<container_name> --net=host -v <path-to-kube-config>:/root/.kube/config:Z -d quay.io/redhat-chaos/krkn-hub:namespace-scenarios
OR
$ docker run -e <VARIABLE>=<value> --net=host -v <path-to-kube-config>:/root/.kube/config:Z -d quay.io/redhat-chaos/krkn-hub:namespace-scenarios
$ docker logs -f <container_name or container_id> # Streams Kraken logs
$ docker inspect <container-name or container-id> --format "{{.State.ExitCode}}" # Outputs exit code which can considered as pass/fail for the scenario
See here for a demo of this scenario
The following environment variables can be set on the host running the container to tweak the scenario/faults being injected:
ex.)
export <parameter_name>=<value>
See list of variables that apply to all scenarios here that can be used/set in addition to these scenario specific variables
| Parameter | Description | Default |
|---|---|---|
| ACTION | Action to take on the namespace | delete |
| LABEL_SELECTOR | Label of the namespace to target. Set this parameter only if NAMESPACE is not set | "" |
| NAMESPACE | Name of the namespace you want to target. Set this parameter only if LABEL_SELECTOR is not set | "openshift-etcd" |
| SLEEP | Number of seconds to wait before polling to see if namespace exists again | 15 |
| DELETE_COUNT | Number of namespaces to kill in each run, based on matching namespace and label specified | 1 |
| RUNS | Number of runs to execute the action | 1 |
NOTE In case of using custom metrics profile or alerts profile when CAPTURE_METRICS or ENABLE_ALERTS is enabled, mount the metrics profile from the host on which the container is run using podman/docker under /root/kraken/config/metrics-aggregated.yaml and /root/kraken/config/alerts. For example:
$ podman run --name=<container_name> --net=host --env-host=true -v <path-to-custom-metrics-profile>:/root/kraken/config/metrics-aggregated.yaml -v <path-to-custom-alerts-profile>:/root/kraken/config/alerts -v <path-to-kube-config>:/root/.kube/config:Z -d quay.io/redhat-chaos/krkn-hub:container-scenarios