NCP-CN practice question 4 of 25

[Perform Day 2 Operations] A dev team needed to optimize their logging system to be more robust, because the CPU and memory limits were insufficient…

[Perform Day 2 Operations] A dev team needed to optimize their logging system to be more robust, because the CPU and memory limits were insufficient, which caused delays in log collection and processing during times of high demand. After a deep performance analysis, they decided to increase the CPU limits from 1 to 4 and the memory from 1000Mi to 4Gi. Which ConfigMap should the development team run with custom resource requests and limit values for fluentd?

Answer options

A: bashCopy [nutanix@nkp-boot ~]$ cat < configmap.yamlapiVersion v1kind ConfigMapmetadataname logging-operator-logging-overridesnamespace kommanderdatavalues.yaml |fluentdresourceslimitscpu 1memory 1000Mirequestscpu 4memory 4GiEOF

B: bashCopy [nutanix@nkp-boot ~]$ cat < configmap.yamlapiVersion: v1kind: ConfigMapmetadata:name: logging-operator-logging-overridesnamespace: kommanderdata:values.yaml: |fluentd:resources:limits:cpu: 4memory: 4Girequests:cpu: 4memory: 4GiEOF Correct answer

C: bashCopy [nutanix@nkp-boot ~]$ cat < configmap.yamlapiVersion v1kind ConfigMapmetadataname logging-operator-logging-overridesnamespace kommanderdatavalues.yaml |fluentdresourceslimitscpu 4EOFvalues.yaml |fluentdresourceslimitscpu 4memory 4Girequestscpu 1memory 1000MiEOF

D: bashCopy [nutanix@nkp-boot ~]$ cat < configmap.yamlapiVersion: v1kind: ConfigMapmetadata:name: logging-operator-logging-overridesnamespace: kommanderdata:values.yaml: |fluentdresourceslimitscpu 4memory 1000Mirequestscpu 1memory 4GiEOF

Correct Answer:

B. bashCopy [nutanix@nkp-boot ~]$ cat

Explanation

To customize a platform add-on like the logging operator in Nutanix Kubernetes Platform (NKP), you must create a ConfigMap with a specific name (-overrides) in the kommander namespace. The question requires increasing Fluentd's CPU and memory limits. Option B presents a syntactically correct YAML definition for a ConfigMap named logging-operator-logging-overrides. The data key values.yaml contains a properly structured YAML block that sets the fluentd.resources.limits and fluentd.resources.requests to the desired values of 4 CPU and 4Gi memory, which directly addresses the performance issue described.

Why Incorrect

A: The YAML syntax is invalid (e.g., apiVersion v1, metadataname), and the embedded values under data are malformed and do not follow the required hierarchical structure. C: This option contains invalid YAML syntax and a malformed, duplicated values.yaml block, making it non-functional. The resource values are also incorrectly assigned. D: While the outer ConfigMap structure is mostly correct, the embedded values.yaml data is not valid YAML. It is a single line of text without the necessary indentation and structure.

References

1. Nutanix Kubernetes Platform Administration Guide - Customizing a Platform Add-on: This official guide details the procedure for customizing platform add-ons. It specifies creating a ConfigMap named -overrides in the kommander namespace and providing custom settings in the data.values.yaml key. The structure used in option B aligns with this documented method.

URL: https://portal.nutanix.com/page/documents/details?targetId=Nutanix-Kubernetes-Platform-Admin-Guide-v28:ecm-customize-addon-t.html

2. Kubernetes Documentation - Resource Management for Pods and Containers: This official Kubernetes documentation explains the syntax for specifying resource requests and limits within a Pod specification. The resources.limits.cpu

resources.limits.memory

etc.

structure shown in Option B is the standard Kubernetes convention.

URL: https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/ (Section: "Resource requests and limits of a container")

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