Kubelet Pod Lifecycle Event Generator Details Test

The Kubelet Pod Lifecycle Event Generator is a component within the Kubelet that tracks and generates events related to the lifecycle of Pods on a node. It monitors the state changes of Pods, such as creation, start, readiness, and termination. When a Pod's status changes, the Event Generator creates corresponding events, which are then reported to the Kubernetes API server. These events help provide visibility into the state of Pods, assist with debugging, and support automated response mechanisms by alerting administrators to issues or changes in Pod health or status.

Monitoring the Kubelet Pod Lifecycle Event Generator is crucial for tracking Pod status changes, diagnosing issues, and ensuring operational stability. It provides real-time insights into Pod events, aids in troubleshooting, supports automated alerts, and offers an audit trail for compliance. This visibility helps maintain the health and reliability of your Kubernetes environment.

The Kubelet pod lifecycle event generator details Test continuously monitors the lifecycle event generator in the target node and reports key metrics like duration, number of pods etc. These metrics are invaluable for the administrators to ensure that service is up and prevent any issues in case service has problems.

Target of the test : A Kubernetes Worker Node

Agent deploying the test : A remote agent

Outputs of the test : One set of results for the target Kubernetes Worker node being monitored

Configurable parameters for the test

Parameter	Description
Test Period	How often should the test be executed.
Host	The IP address of the host for which this test is to be configured.
Port	Specify the port at which the specified Host listens. By default, this is 6443.
Timeout	Specify the duration (in seconds) beyond which the test will timeout in the Timeout text box. The default value is 10 seconds.
Metric URL	Each of the Kubernetes system components expose monitoring metrics through /metrics endpoint of the HTTP server. For components that don't expose endpoint by default, refer official Kubernetes distribution documentation site. Specify the metric URL textbox.

Measurements made by the test

Measurement	Description	Measurement Unit	Interpretation
Discard events	Indicates the events which are generated but subsequently ignored.	Number	Discarding events helps manage system performance and ensures that only relevant information is retained and processed.
Last seen	Indicates the most recent time a particular event was recorded for the target node.	Minutes	The "last seen" timestamp helps maintain situational awareness and ensures timely responses to changes within the Kubernetes cluster.
Number of relisting pods	Indicates the number of pods which are fetched and refreshed from list of resources.	Number	Relisting is crucial for maintaining accurate, real-time information about the state of resources within the Kubernetes environment.
Total relisting pods duration	Indicates the time taken for relisting the pods.	Number
Number of relisting pods interval	Indicates the number of intervals of time it took for relisting of pods.	Number
Total relisting pods interval	Indicates the total time taken for relisting of pods.	Milliseconds
Average relisting pods duration	Indicates the average time take for the relisting of pods.	Milliseconds
Indicates the number of intervals of time it took for relisting of pods.	Indicates theaverage number of intervals of time it took for relisting of pods.	Milliseconds