Kube Proxy Details Test

Kube Proxy is a network component in Kubernetes that maintains network rules on nodes to facilitate communication between Pods and services. It operates at the network layer and handles traffic routing by creating and managing network load-balancing rules for Services. Kube-Proxy can use different modes, such as iptables or IPVS, to direct traffic to the appropriate Pods based on service endpoints. By ensuring consistent and reliable network connectivity, Kube-Proxy supports service discovery and load balancing within the cluster, allowing Pods to communicate with each other and with external clients efficiently. It plays a crucial role in maintaining the network's functionality and performance.

Monitoring the Kubelet is crucial for maintaining the health and performance of a Kubernetes cluster. The Kubelet manages the life cycle of containers on each node, ensuring they run as expected and reporting their status to the control plane. By monitoring the Kubelet, you can detect and address issues such as resource exhaustion, container crashes, or network problems promptly. It helps ensure that nodes are healthy, Pods are properly managed, and any discrepancies between desired and actual states are resolved quickly. Effective monitoring of the Kubelet contributes to overall cluster stability and reliability, enhancing the performance of containerized applications.

The Kube Proxy Details Test continuously monitors the kubelet server and reports key metrics like number of resident and virtual memory in use, latency, CPU time 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
Resident memory in use	Indicates the memory in use out of the RAM.	MB	Resident memory is the RAM memory excluding any virtual memory.
Virtual memory in use	Indicates the virtual memory in use by Kube proxy.	MB
Number of network programming latency	Indicates the number of network programming latency.	Number	Latency is crucial in network programming, impacting application performance, especially in distributed systems. Monitoring and optimizing these delays is vital for ensuring efficient and responsive network communication.
Total network programming latency	Indicates the total network programming latency.	Milliseconds
CPU time spent by user/system	Indicates the CPU time taken by system and user processes.	Seconds	Monitoring both types of CPU time helps in understanding where CPU resources are being utilized and can aid in performance tuning, identifying bottlenecks, and optimizing application and system performance.