Kube-monkey interval (Chaos Testing) - testing

Question

I'm implementing Kube-monkey in my dev Kubernetes cluster, and can see that the PODs are getting terminated every 30 seconds.
Could someone please help me to set POD termination interval in Kube-monkey(Chaos Monkey for Kubernetes clusters) to some other time?
I tried setting interval parameter in the kube-monkey yaml file (as below) to terminate the PODs every 5 minutes, but doesn't work.
config:
dryRun: false
whitelistedNamespaces:
- "default"
debug:
enabled: true
interval: 5m0s
schedule_immediate_kill: true```
Couldn't find any resources online on setting the termination interval as well.
Could someone please guide me on how to set this?
Thanks a lot!

Answer 1

If you see the official helm chart values.yaml there is no interval key. since you have kept schedule_immediate_kill : TRUE default kill time will be 30S
https://github.com/asobti/kube-monkey/blob/master/helm/kubemonkey/values.yaml
you can change the interval time using schedule_delay
[debug]
enabled = true
schedule_delay=30
force_should_kill = true
schedule_immediate_kill = true
instead of interval use the schedule_delay.
however the interval is working with the Kubethanos : https://jaxenter.com/kubernetes-chaos-kubethanos-164798.html
you can pass key-value as a parameter.

Answer 2

The params file of golang will show us what all configurations we can alter have a look: https://raw.githubusercontent.com/asobti/kube-monkey/master/config/param/param.go
package param
const (
// DryRun logs but does not terminate pods
// Type: bool
// Default: true
DryRun = "kubemonkey.dry_run"
// Timezone specifies the timezone to use when
// scheduling Pod terminations
// Type: string
// Default: America/Los_Angeles
Timezone = "kubemonkey.time_zone"
// RunHour specifies the hour of the weekday
// when the scheduler should run to schedule terminations
// Must be less than StartHour, and [0,23]
// Type: int
// Default: 8
RunHour = "kubemonkey.run_hour"
// StartHour specifies the hour beginning at
// which pod terminations may occur
// Should be set to a time when service owners are expected
// to be available
// Must be less than EndHour, and [0, 23]
// Type: int
// Default: 10
StartHour = "kubemonkey.start_hour"
// EndHour specifies the end hour beyond which no pod
// terminations will occur
// Should be set to a time when service owners are
// expected to be available
// Must be [0,23]
// Type: int
// Default: 16
EndHour = "kubemonkey.end_hour"
// GracePeriodSec specifies the amount of time in
// seconds a pod is given to shut down gracefully,
// before Kubernetes does a hard kill
// Type: int
// Default: 5
GracePeriodSec = "kubemonkey.graceperiod_sec"
// WhitelistedNamespaces specifies a list of
// namespaces where terminations are valid
// Default is defined by metav1.NamespaceDefault
// To allow all namespaces use [""]
// Type: list
// Default: [ "default" ]
WhitelistedNamespaces = "kubemonkey.whitelisted_namespaces"
// BlacklistedNamespaces specifies a list of namespaces
// for which terminations should never
// be carried out.
// Default is defined by metav1.NamespaceSystem
// To block no namespaces use [""]
// Type: list
// Default: [ "kube-system" ]
BlacklistedNamespaces = "kubemonkey.blacklisted_namespaces"
// ClusterAPIServerHost specifies the host URL for Kubernetes
// cluster APIServer. Use this config if the apiserver IP
// address provided by in-cluster config
// does not work for you because your certificate does not
// contain the right SAN
// Type: string
// Default: No default. If not specified, URL provided
// by in-cluster config is used
ClusterAPIServerHost = "kubernetes.host"
// DebugEnabled enables debug mode
// Type: bool
// Default: false
DebugEnabled = "debug.enabled"
// DebugScheduleDelay delays duration
// in sec after kube-monkey is launched
// after which scheduling is run
// Use when debugging to run scheduling sooner
// Type: int
// Default: 30
DebugScheduleDelay = "debug.schedule_delay"
// DebugForceShouldKill guarantees terminations
// to be scheduled for all eligible Deployments,
// i.e., probability of kill = 1
// Type: bool
// Default: false
DebugForceShouldKill = "debug.force_should_kill"
// DebugScheduleImmediateKill schedules pod terminations
// sometime in the next 60 sec to facilitate
// debugging (instead of the hours specified by
// StartHour and EndHour)
// Type: bool
// Default: false
DebugScheduleImmediateKill = "debug.schedule_immediate_kill"
// NotificationsEnabled enables reporting of attacks to an HTTP endpoint
// Type: bool
// Default: false
NotificationsEnabled = "notifications.enabled"
// NotificationsReportSchedule enables reporting of attack schedule to an HTTP endpoint
// Type: bool
// Default: false
NotificationsReportSchedule = "notifications.reportSchedule"
// NotificationsAttacks reports attacks to an HTTP endpoint
// Type: config.Receiver struct
// Default: Receiver{}
NotificationsAttacks = "notifications.attacks"
)