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Exam AZ-104 topic 4 question 41 discussion

Actual exam question from Microsoft's AZ-104
Question #: 41
Topic #: 4
[All AZ-104 Questions]

You have an Azure Kubernetes Service (AKS) cluster named AKS1.
You need to configure cluster autoscaler for AKS1.
Which two tools should you use? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.

  • A. the kubectl command
  • B. the az aks command
  • C. the Set-AzVm cmdlet
  • D. the Azure portal
  • E. the Set-AzAks cmdlet
Show Suggested Answer Hide Answer
Suggested Answer: AB 🗳️
A: The following example uses the kubectl autoscale command to autoscale the number of pods in the azure-vote-front deployment. If average CPU utilization across all pods exceeds 50% of their requested usage, the autoscaler increases the pods up to a maximum of 10 instances. A minimum of 3 instances is then defined for the deployment: kubectl autoscale deployment azure-vote-front --cpu-percent=50 --min=3 --max=10
B: Use the az aks update command to enable and configure the cluster autoscaler on the node pool for the existing cluster.
Reference:
https://docs.microsoft.com/en-us/azure/aks/tutorial-kubernetes-scale https://docs.microsoft.com/en-us/azure/aks/cluster-autoscaler
by fedztedz at Dec. 5, 2020, 2:48 p.m.

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fedztedz
Highly Voted 2 years, 6 months ago
The Answer is not correct. The right is B & D. B is for az aks command , check https://docs.microsoft.com/en-us/azure/aks/cluster-autoscaler D is for Azure portal. Under node pools, press scale, then choose auto scale. The Answer A is not correct as it is confusing with Horizontal pod autoscale which is not asked here. The pod autoscale use kubectl.
upvoted 180 times
diligent176
2 years, 5 months ago
The article does a good job explaining the difference of "cluster autoscaler" and "horizontal pod autoscaler"... https://docs.microsoft.com/en-us/azure/aks/cluster-autoscaler FYI also - the PowerShell command that can do this same task is "Set-AzAksCluster" (not Set-AzAks). B and D it is!
upvoted 12 times
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jantoniocesargatica
2 years ago
There are 2 things to understand: a) Are we talking about pods? b) Are we talking about nodes? The question is regarding how to autoscale the AKS, so it means that we are talking about the nodes. As we are talking how to scale the nodes: a) az aks is neccesary b) Then you scale the nodes in the portal. The correct answers are B & D. If we want to scale the pods, the options would be kubelet, but it is not the case. We are not talking about the containers, we are talking about the infrastructure behind this.
upvoted 80 times
mythjava
3 months, 1 week ago
Where is the option about D?
upvoted 1 times
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juniorccs
1 year, 4 months ago
thanks for the clarification
upvoted 5 times
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marcellov
2 years ago
To corroborate with your answer, kubectl autoscale "creates an autoscaler that automatically chooses and sets the number of pods that run in a kubernetes cluster": https://kubernetes.io/docs/reference/generated/kubectl/kubectl-commands#autoscale According to Microsoft, this is a Horizontal pod autoscale, not a Cluster autoscale: https://docs.microsoft.com/en-us/azure/aks/cluster-autoscaler#about-the-cluster-autoscaler
upvoted 5 times
jantoniocesargatica
2 years ago
But we are not talking about the pods, we are talinkg about the nodes, so is B and D. Think that this service is managed by Azure, and they will not allow to do this by yourself, and this is the reason why you must choose the portal.
upvoted 5 times
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Hibs2016
2 years, 6 months ago
Do you have any links for doing the scaling in the portal?
upvoted 4 times
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mlantonis
Highly Voted 2 years ago
Correct Answer: B and D We need to configure autoscaler for the AKS cluster. We do not want to scale Kubernetes pods, so kubectl command is not needed. A: kubectl command is used for configuring Kubernetes and not AKS cluster. B: The az aks command is used for the AKS cluster configuration. C: Set-AzVm cmdlet is used for VMs. D: Azure portal, under node pools, press scale, then choose auto scale. E: Set-AzAks, creates or updates an AKS cluster, the correct cmdlet is Set-AzAksCluster. AKS clusters can scale in one of two ways: - The cluster autoscaler watches for pods that can't be scheduled on nodes because of resource constraints. The cluster then automatically increases the number of nodes. - The horizontal pod autoscaler uses the Metrics Server in a Kubernetes cluster to monitor the resource demand of pods. If an application needs more resources, the number of pods is automatically increased to meet the demand. Reference: https://docs.microsoft.com/en-us/azure/aks/cluster-autoscaler
upvoted 166 times
klexams
7 months, 1 week ago
I agreed already but then you pointed out the two ways: - The cluster autoscaler - The horizontal pod autoscaler The 2nd uses kubectl so the answer is A and B.
upvoted 1 times
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Mozbius_
1 year, 3 months ago
Thank you for the very clear explanations!!!
upvoted 3 times
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JunetGoyal
Most Recent 1 month ago
Exact same Q came in my exam on 30 April2023.I choose A, B. I want not sure between A,D. haahaahh
upvoted 4 times
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zzreflexzz
1 month ago
on exam 4/29/23
upvoted 2 times
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Exilic
1 month, 2 weeks ago
Selected Answer: BE
ChatGPT response: The two tools you should use to configure cluster autoscaler for AKS1 are: B. the az aks command, which provides a command-line interface for managing AKS clusters, including the ability to enable and configure cluster autoscaler. E. the Set-AzAks cmdlet, which is a PowerShell cmdlet for managing AKS clusters. It can be used to enable and configure cluster autoscaler. Therefore, options B and E are correct. Options A, C, and D are not required for this task. "follow up question" Will the answer be the same if I need to configure autoscaler for the AKS cluster. I do not want to scale Kubernetes pods Yes, the answer would still be the same. Configuring cluster autoscaler for an AKS cluster is independent of scaling Kubernetes pods. The purpose of cluster autoscaler is to automatically adjust the size of the AKS cluster based on the resource demands of the workloads running on it, while scaling Kubernetes pods involves adjusting the number of replicas for a specific deployment or replica set. Therefore, to configure cluster autoscaler for an AKS cluster, you would still need to use the az aks command and the Set-AzAks cmdlet.
upvoted 1 times
garmatey
4 days, 18 hours ago
be more critical of chatgpt's answers....
upvoted 1 times
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mythjava
3 months, 1 week ago
Selected Answer: BD
B,D is correct, A,C,E is not.
upvoted 1 times
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UmbongoDrink
3 months, 3 weeks ago
Selected Answer: BD
We need to configure autoscaler for the AKS cluster. We do not want to scale Kubernetes pods, so kubectl command is not needed. Use Portal under Node Pools
upvoted 2 times
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typales2005
4 months, 3 weeks ago
Selected Answer: BD
was in 09/01/2023 exam.
upvoted 5 times
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Bigc0ck
4 months, 4 weeks ago
definitly on the test I took
upvoted 3 times
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Moradiya
5 months ago
This was came in exam on 01/04/23
upvoted 3 times
typales2005
5 months ago
What did you answer?
upvoted 1 times
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prem007
5 months, 2 weeks ago
Selected Answer: BD
If you need to create an AKS cluster, use the az aks create command. link :If you need to create an AKS cluster, use the az aks create command. Deploy an AKS cluster using the Azure portal. Run a sample multi-container application with a web front-end and a Redis instance in the cluster. linkhttps://learn.microsoft.com/en-us/azure/aks/learn/quick-kubernetes-deploy-portal?tabs=azure-cli
upvoted 1 times
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anushak
5 months, 3 weeks ago
the answer is A and B
upvoted 1 times
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Jamal786
6 months, 2 weeks ago
I have prepared myself from Microsoft partners SPEKTRA SYSTEMS and there I found this same question which was as below: You have an Azure Kubernetes Service Cluster named AKS1. For configuring an Autoscaler in AKS1 what are the COMMANDS you need to execute? So with only one word has changed which is commands and solution would also be change which is 1) the az aks command 2) Set-AzAks cmdlet SO, be attentive in the exam. MICROSOFT is clever!
upvoted 4 times
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Jamal786
6 months, 2 weeks ago
B and D are the right answers to this question. But in the exam, if the question comes with COMMANDS instead of TOOLS? then answers are: 1) the az aks command 2) Set-AzAks cmdlet
upvoted 2 times
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BYNeo
6 months, 3 weeks ago
Why D? unless it mention Azure portal cloud shell
upvoted 1 times
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klexams
7 months, 1 week ago
Selected Answer: AB
The cluster autoscaler watches for pods that can't be scheduled on nodes because of resource constraints. The cluster then automatically increases the number of nodes. - The horizontal pod autoscaler uses the Metrics Server in a Kubernetes cluster to monitor the resource demand of pods. If an application needs more resources, the number of pods is automatically increased to meet the demand. The 2nd way uses kubectl.
upvoted 1 times
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simonseztech
7 months, 3 weeks ago
Selected Answer: BD
https://learn.microsoft.com/en-us/azure/aks/cluster-autoscaler
upvoted 1 times
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