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| Section | Objectives |
|---|---|
| Topic 1: Conduct NKP Fleet Management | - Configure platform applications - Configure workspaces - Deploy workload clusters to a workspace - Attach clusters to a workspace - Configure projects - Detach or delete clusters from a workspace |
| Topic 2: Prepare the Environment for an NKP Deployment | - Seed a private registry - Determine license tiers for clusters - Prepare a bastion host - Build machine images or prepare nodes - Create a bootstrap cluster - Gather information for building a cluster on a target provider |
| Topic 3: Manage Building an NKP Cluster | - Customize and deploy Kommander and apply appropriate licenses - Customize and deploy clusters |
| Topic 4: Perform Day 2 Operations | - Conduct performance and health monitoring - Configure logging - Configure authentication and authorization - Configure cluster autoscaling - Conduct lifecycle management functions - Configure cluster backup and recovery |
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問題 #43
In a telecom company, two teams were working on the development of two different applications:
ApplicationA
ApplicationBApplicationA's development team was excited about the release of their new functionality. However, upon deploying their application, they noticed that performance was slow. After investigating, they discovered that the ApplicationB team was consuming the majority of the cluster's resources, affecting all other teams. How can this problem be mitigated?
答案：A
問題 #44
A development Kubernetes cluster deployed with NKP is having performance issues. The Cloud Engineer commented that worker VMs are consuming a lot of CPU and RAM. The Platform Engineer took a look at the CPU and RAM statistics with Grafana and confirmed that the worker VMs are running out of CPU and memory. The Kubernetes cluster has 4 workers with 8 vCPUs and 32 GB RAM. What could the Platform Engineer do?
答案：C
解題說明：
The NKPA course addresses performance issues in NKP clusters, such as high CPU and memory consumption on worker nodes, by recommending scaling options to distribute workloads more effectively.
The Kubernetes cluster in the scenario has 4 workers, each with 8 vCPUs and 32 GB RAM, and is running out of resources. The most effective solution is to add more workers to the cluster to increase overall capacity and balance the load, rather than modifying existing workers or reducing application replicas.
The correct action is to add one more worker using the command nkp scale nodepools
${NODEPOOL_NAME} --replicas=5 --cluster-name=${CLUSTER_NAME} -n
${CLUSTER_WORKSPACE} (Option D). This command scales the specified node pool to 5 replicas (from the current 4), adding one additional worker to the cluster. The new worker will have the same configuration (8 vCPUs, 32 GB RAM) as the existing workers, providing additional capacity to alleviate resource contention. The Nutanix Cloud Native (NCP-CN) 6.10 Study Guide states: "To address performance issues due to resource exhaustion in an NKP cluster, scale out by adding workers using nkp scale nodepools
<nodepool-name> --replicas <count> --cluster-name <cluster-name> -n <workspace>." Incorrect Options:
* A. Call tech support to investigate: While support can help, the issue is clearly resource exhaustion, which can be resolved by scaling the cluster-a task the Platform Engineer can perform directly.
* B. Ask developers to lower application replicas: Reducing replicas may decrease resource usage but could impact application availability or performance, which is not ideal for a development cluster.
* C. Add more CPU and memory to workers with nkp scale --cpu 16 --memory 64: The nkp scale command does not support --cpu and --memory flags for resizing existing workers. Resizing VMs typically requires updating the node pool configuration and replacing nodes, which is more complex than adding new workers.
:
Nutanix Kubernetes Platform Administration (NKPA) Course, Section on Cluster Scaling and Performance Management.
Nutanix Cloud Native (NCP-CN) 6.10 Study Guide, Chapter on Day 2 Operations.
Nutanix Cloud Bible, NutanixKubernetesPlatform Section: https://www.nutanixbible.com
問題 #45
A Platform Engineer needs to create an NKP cluster on vSphere infrastructure, using the vSphere provisioning method. The cluster needs to have 3 worker node pools:
* First node pool should consist of 6 worker nodes
* Second node pool should consist of 3 worker nodes
* Third node pool should consist of 3 worker nodesAdditionally, the worker nodes in the first node pool should be set to 10 CPUs, the second node pool workers should be set to 8 CPUs, and the third node pool workers should be set to 6 CPUs. What is the proper way to create the NKP cluster using the NKP CLI?
答案：D
解題說明：
The NKPA course details the process of creating an NKP cluster on vSphere using the NKP CLI, including the configuration of multiple node pools with specific worker node counts and CPU settings. The correct approach involves creating the cluster with the initial node pool and then adding additional node pools separately.
The steps in Option A align with this process:
* nkp create cluster vsphere --worker-replicas 6 --worker-cpus 10: This command creates the NKP cluster on vSphere with the first node pool, consisting of 6 worker nodes, each with 10 CPUs.
* nkp create nodepool vsphere --worker-replicas 3 --worker-cpus 8: This adds the second node pool to the cluster with 3 worker nodes, each with 8 CPUs.
* nkp create nodepool vsphere --worker-replicas 3 --worker-cpus 6: This adds the third node pool with 3 worker nodes, each with 6 CPUs.
The Nutanix Cloud Native (NCP-CN) 6.10 Study Guide states: "To create an NKP cluster with multiple node pools on vSphere, use nkp create cluster vsphere to define the first node pool, then add additional node pools with nkp create nodepool vsphere, specifying --worker-replicas and --worker-cpus for each pool." This method ensures precise control over each node pool's configuration.
Incorrect Options:
* B: The second nkp create nodepool command uses --replicas and --cpus, which are not the correct flags.
The NKPA course specifies --worker-replicas and --worker-cpus.
* C: The --node-pools, --worker-replicas 6,3,3, and --worker-cpus 10,8,6 flags are not supported in a single nkp create cluster command. Node pools must be created separately.
* D: There is no nkp create nodepools command; the correct command is nkp create nodepool.
Additionally, --replicas and --cpus are incorrect flags.
:
Nutanix Kubernetes Platform Administration (NKPA) Course, Section on Cluster Creation.
Nutanix Cloud Native (NCP-CN) 6.10 Study Guide, Chapter on Building NKP Clusters.
Nutanix Cloud Bible, NutanixKubernetesPlatform Section: https://www.nutanixbible.com
問題 #46
Refer to the exhibits.
A Cloud Administrator had provisioned a Kubernetes cluster named demo that is no longer actively being used. A Quick review from the Systems Engineer confirms that the following VMs are part of the demo Kubernetes cluster
How should the demo cluster be properly deleted?
答案：A
解題說明：
Comprehensive and Detailed Explanation:
The correct procedure for deleting an NKP cluster involves using the nkp delete cluster command with the appropriate cluster name and namespace. This ensures that not only the Kubernetes resources but also the corresponding NKP resources (e.g., nodepools, Kommander integration) are deleted cleanly and consistently.
Simply deleting the VMs does not clean up the associated NKP management objects. This approach is detailed in the NKP documentation for cluster lifecycle management, emphasizing the need to use the provided CLI commands for full removal.
References: NCP-CN-6.10 Course Material - Cluster Deletion Commands
問題 #47
A Platform Engineer for an organization does research in Antarctica. The engineer is preparing a bastion host for deploying NKP while the infrastructure is isolated. Which programs should the engineer ensure are installed on a bastion host before shipping the infrastructure?
答案：D
解題說明：
The scenario describes an isolated environment in Antarctica, implying an air-gapped NKP deployment where the bastion host serves as the primary management point for deploying and managing NKP clusters without Internet access. The NKPA course outlines the essential tools that must be installed on a bastion host to facilitate NKP deployment and management in such environments.
The required programs are kubectl and nkp:
* kubectl: This is the Kubernetes command-line tool used to interact with Kubernetes clusters, essential for managing cluster resources, debugging, and applying configurations during and after deployment.
* nkp: The NKP CLI (nkp) is the primary tool for deploying, managing, and scaling NKP clusters, including creating bootstrap clusters, deploying clusters, and managing platform applications. In an air- gapped setup, the nkp CLI is critical for executing deployment commands using the Air-Gapped Bundle.
The Nutanix Cloud Native (NCP-CN) 6.10 Study Guide states: "For an air-gapped NKP deployment, ensure the bastion host has kubectl and the nkp CLI installed to manage the deployment process and interact with the resulting Kubernetes clusters." These tools are sufficient for the engineer to deploy and operate NKP in an isolated environment.
Incorrect Options:
* A. awscli and nkp: The awscli is specific to AWS environments, but the question does not specify AWS infrastructure. Additionally, in an isolated environment, awscli is less relevant without Internet access.
* B. oc and kubectl: oc is the OpenShift CLI, not used for NKP deployments. NKP uses nkp CLI instead.
* C. oc and az: az is the Azure CLI, and oc is for OpenShift-neither is relevant to NKP deployment.
:
Nutanix Kubernetes Platform Administration (NKPA) Course, Section on Preparing for Air-Gapped Deployments.
Nutanix Cloud Native (NCP-CN) 6.10 Study Guide, Chapter on NKP Deployment Prerequisites.
Nutanix Cloud Bible, NutanixKubernetesPlatform Section: https://www.nutanixbible.com
問題 #48
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