Krknctl All Scenarios Variables

These variables are to be used for the top level configuration template that are shared by all the scenarios in Krknctl.

Each section below corresponds to a section in the Krkn config reference. Pass flags when running a scenario:

krknctl run <scenario> --<parameter> <value>

Kraken

General run settings. See Kraken config for full details.

Parameter	Description	Type	Default	Possible Values
--krkn-kubeconfig	Sets the path where krkn will search for kubeconfig (in container)	string	/home/krkn/.kube/config
--generate-pdf-report	Generates a PDF report summarizing the chaos run results at the end of each scenario	enum	True	True/False
--krkn-debug	Enables debug mode for Krkn	enum	False	True/False

Cerberus

Cluster health monitoring integration. See Cerberus config for full details.

Parameter	Description	Type	Default	Possible Values
--cerberus-enabled	Enables Cerberus Support	enum	False	True/False
--cerberus-url	Cerberus http url	string	http://0.0.0.0:8080

Performance Monitoring

Prometheus metrics collection and alert evaluation. See Performance Monitoring config for full details.

Parameter	Description	Type	Default	Possible Values
--prometheus-url	Prometheus url for when running on kuberenetes	string	`""`
--prometheus-token	Prometheus bearer token for prometheus url authentication	string	`""`
--uuid	sets krkn run uuid instead of generating it	string	`""`
--capture-metrics	Enables metrics capture	enum	False	True/False
--enable-alerts	Enables cluster alerts check	enum	False	True/False
--alerts-path	Allows to specify a different alert file path	string	config/alerts.yaml
--metrics-path	Allows to specify a different metrics file path	string	config/metrics-aggregated.yaml
--check-critical-alerts	Enables checking for critical alerts	enum	False	True/False

Resiliency Score

Resiliency scoring configuration. See Resiliency Score config for full details.

Parameter	Description	Type
--resiliency-score	The system outputs a detailed resiliency score as a single-line JSON object, facilitating easy aggregation across multiple test scenarios.	boolean
--disable-resiliency-score	Disables resiliency score calculation entirely	boolean
--resiliency-file	Path to a YAML file containing SLO definitions for resiliency scoring, defaults to the alerts profile or config/alerts.yaml	file

Elastic

Elasticsearch storage for telemetry and metrics. See Elastic config for full details.

Parameter	Description	Type	Default	Possible Values
--enable-es	Enables elastic search data collection	enum	False	True/False
--es-run-tag	Elasticsearch run tag to compare similar runs	string	`""`
--es-server	Elasticsearch instance URL	string	http://0.0.0.0
--es-port	Elasticsearch instance port	number	443
--es-username	Elasticsearch instance username	string	elastic
--es-password	Elasticsearch instance password	string	`""`
--es-verify-certs	Enables elasticsearch TLS certificate verification	enum	False	True/False
--es-metrics-index	Index name for metrics in Elasticsearch	string	krkn-metrics
--es-alerts-index	Index name for alerts in Elasticsearch	string	krkn-alerts
--es-telemetry-index	Index name for telemetry in Elasticsearch	string	krkn-telemetry

Tunings

Execution timing and iteration controls. See Tunings config for full details.

Parameter	Description	Type	Default	Possible Values
--wait-duration	waits for a certain amount of time after the scenario	number	1
--iterations	number of times the same chaos scenario will be executed	number	1
--daemon-mode	if set the scenario will execute forever	enum	False	True/False

Telemetry

Run data collection and upload settings. See Telemetry config for full details.

Parameter	Description	Type	Default	Possible Values
--telemetry-enabled	Enables telemetry support	enum	False	True/False
--telemetry-api-url	API endpoint for telemetry data	string	https://ulnmf9xv7j.execute-api.us-west-2.amazonaws.com/produ...
--telemetry-username	Username for telemetry authentication	string	redhat-chaos
--telemetry-password	Password for telemetry authentication	string	`""`
--telemetry-prometheus-backup	Enables Prometheus backup for telemetry	enum	True	True/False
--telemetry-full-prometheus-backup	Enables full Prometheus backup for telemetry	enum	False	True/False
--telemetry-backup-threads	Number of threads for telemetry backup	number	5
--telemetry-archive-path	Path to save telemetry archive	string	/tmp
--telemetry-max-retries	Maximum retries for telemetry operations	number	0
--telemetry-run-tag	Tag for telemetry run	string	chaos
--telemetry-group	Group name for telemetry data	string	default
--telemetry-archive-size	Maximum size for telemetry archives in KB	number	1000
--telemetry-logs-backup	Enables logs backup for telemetry	enum	False	True/False
--telemetry-filter-pattern	Filter pattern for telemetry logs	string	["(\\w{3}\\s\\d{1,2}\\s\\d{2}:\\d{2}:\\d{2}\\.\\d+).+","kini...
--telemetry-cli-path	Path to telemetry CLI tool (oc)	string	`""`
--telemetry-events-backup	Enables events backup for telemetry	enum	True	True/False

Note

For –telemetry-archive-size, the lower the value the higher the number of archive files produced and uploaded (processed by –telemetry-backup-threads simultaneously). For unstable or slow connections, keep this value low and increase –telemetry-backup-threads so that on upload failure only the failed chunk is retried.

Health Checks

Application endpoint monitoring during chaos. See Health Checks config for full details.

Parameter	Description	Type	Default	Possible Values
--health-check-interval	How often to check the health check urls (seconds)	number	2
--health-check-url	Url to check the health of	string	`""`
--health-check-auth	Authentication tuple to authenticate into health check URL	string	`""`
--health-check-bearer-token	Bearer token to authenticate into health check URL	string	`""`
--health-check-exit	Exit on failure when health check URL is not able to connect	enum	False	True/False
--health-check-verify	SSL Verification to authenticate into health check URL	enum	False	True/False

Virt Checks

KubeVirt VMI SSH connection monitoring during chaos. See Virt Checks config for full details.

Parameter	Description	Type	Default	Possible Values
--kubevirt-check-interval	How often to check the KubeVirt VMs SSH status (seconds)	number	2
--kubevirt-namespace	KubeVirt namespace to check the health of	string	`""`
--kubevirt-name	KubeVirt regex names to check VMs	string	`""`
--kubevirt-only-failures	KubeVirt checks only report if failure occurs	enum	False	True/False/true/false
--kubevirt-disconnected	KubeVirt checks in disconnected mode, bypassing the cluster API	enum	False	True/False/true/false
--kubevirt-ssh-node	KubeVirt backup node to SSH into when checking VMI IP address status	string	`""`
--kubevirt-exit-on-failure	KubeVirt fails run if vms still have false status	enum	False	True/False/true/false
--kubevirt-node-name	Only track VMs in KubeVirt on given node name	string	`""`
--kubevirt-label-selector	Label selector to filter VMs in KubeVirt	string	`""`

General

Parameters found in the source that no section above covers.

Parameter	Description	Type	Default	Possible Values
--generate-html-report	Generate an interactive HTML summary report after the chaos run	enum	True	True/False

Triggers

Parameters found in the source that no section above covers.

Parameter	Description	Type	Default	Possible Values
--trigger-command	Shell command to evaluate before chaos starts. Chaos begins only after this command exits with the expected code. Leave empty to disable triggers.	string	`""`
--trigger-expected-rc	Expected shell command exit code for the trigger to be considered satisfied	number	0
--triggers-mode	How multiple trigger conditions are combined	enum	all_of	all_of/any_of
--triggers-timeout	Maximum time in seconds to wait for trigger conditions before applying on-timeout behavior	number	300
--triggers-interval	Polling interval in seconds while waiting for trigger conditions	number	5
--triggers-on-timeout	Behavior when trigger conditions are not met before timeout	enum	skip	skip/fail/run_anyway
--trigger-http-url	URL to poll for the HTTP trigger	string	`""`
--trigger-http-method	HTTP method to use (GET, POST, etc.)	string	GET
--trigger-http-expected-status	Expected HTTP status code	number	200
--trigger-http-bearer-token	Bearer token for HTTP authentication	string (secret)	`""`
--trigger-http-body-contains	Substring expected in the HTTP response body	string	`""`
--trigger-k8s-api-version	Kubernetes API version for the resource to watch (e.g. apps/v1, kubevirt.io/v1). Required when using a k8s trigger condition.	string	`""`
--trigger-k8s-kind	Kubernetes resource kind to watch (e.g. Deployment, Pod, VirtualMachineInstanceMigration)	string	`""`
--trigger-k8s-namespace	Namespace of the resource to watch. Leave empty for cluster-scoped resources like Nodes.	string	`""`
--trigger-k8s-name	Name of the specific Kubernetes resource to watch	string	`""`
--trigger-k8s-condition	Condition expression to evaluate against the resource (e.g. status.phase == Running, status.readyReplicas >= 1)	string	`""`
--trigger-prom-query	PromQL expression for the prometheus trigger. Chaos begins only after the query returns a non-empty result. Leave empty to disable.	string	`""`
--trigger-prom-url	Prometheus API URL used by the prometheus trigger condition. Required when trigger-prom-query is set.	string	`""`
--trigger-prom-token	Optional bearer token for authenticating the prometheus trigger against prometheus-url	string (secret)	`""`

Last modified September 2, 2026: [docs-sync] Parameter tables: container-scenarios, global parameters (#627) (5197853)