litmus/experiments/generic/pod_delete

Experiment Metadata

Type	Description	K8s Platform
Chaos	Fail the application pod	Any

Entry-Criteria

• Application pods are healthy before chaos injection

Exit-Criteria

• Application pods are healthy post chaos injection

Details

• Causes (forced/graceful) pod failure of random replicas of an application deployment
• Tests deployment sanity (replica availability & uninterrupted service) and recovery workflows of the application pod

Integrations

• Pod failures can be effected using one of these chaos libraries: litmus, powerfulseal
• The desired chaoslib can be selected by setting one of the above options as value for the env variable LIB

Associated Chaos Utils

• litmuslib
  • litmus/pod_failure_by_litmus.yml
  • litmus/kill_random_pod.yml
• powerfulseal
  • powerfulseal/pod_failure_by_powerfulseal.yml

Litmusbook Environment Variables

Application

Parameter	Description	Type
APP_NAMESPACE	Namespace in which application pods are deployed	Mandatory
APP_LABEL	Unique Labels in key=value format of application deployment	Mandatory

Chaos

Parameter	Description	Type
TOTAL_CHAOS_DURATION	The time duration for chaos insertion (sec)	Mandatory
CHAOS_INTERVAL	Time interval b/w two successive pod-failures (sec)	Mandatory
LIB	The chaos lib used to inject the chaos	Mandatory
CHAOSENGINE	ChaosEngine CR name associated with the experiment instance	Optional
CHAOS_SERVICE_ACCOUNT	Service account used by the powerfulseal deployment	Optional

Procedure

• Identify the values for the mandatory ENV variables
• Create the chaos job via kubectl create -f pod_delete_k8s_job.yml
• Check result of the experiment via kubectl describe chaosresult pod-delete (prefix chaosengine name to experiment name if applicable)
• View experiment logs via kubectl logs -f <chaos-pod-name>