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Question 72 - NCP-EUC discussion

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An administrator has created a Prism Central Playbook Action named Virtual Desktop Add CPU to add 2 vCPU to virtual desktop when an alert is triggered after the virtual desktop's CPU usage has exceeded 80%. Initially the Playbook Action works as expected, however over time it seems it is no longer being triggered.

What is causing this issue?

A.
The virtual desktop CPU Usage alerts were not cleared.
Answers
A.
The virtual desktop CPU Usage alerts were not cleared.
B.
The vNUMA boundary has been breached preventing more vCPUs to be added.
Answers
B.
The vNUMA boundary has been breached preventing more vCPUs to be added.
C.
There are no more CPUs availed to allocate to the VM.
Answers
C.
There are no more CPUs availed to allocate to the VM.
D.
Additional vCPUs need to be registered.
Answers
D.
Additional vCPUs need to be registered.
Suggested answer: A

Explanation:

https://next.nutanix.com/community-blog-154/new-x-play-actions-in-prism-central-2021-7-40005The Prism Central Playbook Action is a tool that allows you to automate tasks based on triggers, suchas events, alerts, or webhooks. You can define a series of actions (called a playbook) that performoperations on your infrastructure, such as adding or reducing resources on a VM2.

To use the Playbook Action for VMs, you need to meet some prerequisites, such as:

The Prism Central version must be 2020.11 or later.

The AOS version must be 5.15 LTSR or later.

The hypervisor must be AHV or ESXi.

The VMs must have Nutanix Guest Tools (NGT) installed and enabled3.

One of the possible reasons why the Playbook Action is no longer being triggered is that the virtual desktop CPU Usage alerts were not cleared. According to the Prism Central guide3, “If an alert has been triggered once and has not been cleared yet, then it will not trigger any action again until it has been cleared”. Therefore, if the CPU Usage alert remains active for a virtual desktop, it will prevent the Playbook Action from adding more vCPUs to it.

asked 23/09/2024
matteo vadagnini
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