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Question 217 - Associate Cloud Engineer discussion

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You have a managed instance group comprised of preemptible VM's. All of the VM's keepdeleting and recreating themselves every minute. What is a possible cause of thisbehavior?

A.
Your zonal capacity is limited, causing all preemptible VM's to be shutdown torecover capacity. Try deploying your group to another zone.
Answers
A.
Your zonal capacity is limited, causing all preemptible VM's to be shutdown torecover capacity. Try deploying your group to another zone.
B.
You have hit your instance quota for the region.
Answers
B.
You have hit your instance quota for the region.
C.
Your managed instance group's VM's are toggled to only last 1 minute inpreemptible settings.
Answers
C.
Your managed instance group's VM's are toggled to only last 1 minute inpreemptible settings.
D.
Your managed instance group's health check is repeatedly failing, either to amisconfigured health check or misconfigured firewall rules not allowing the healthcheck to access the instance
Answers
D.
Your managed instance group's health check is repeatedly failing, either to amisconfigured health check or misconfigured firewall rules not allowing the healthcheck to access the instance
Suggested answer: D

Explanation:

as the instances (normal or preemptible) would be terminated and relaunched if the health check fails either due to application not configured properly or the instances firewall do not allow health check to happen.

GCP provides health check systems that connect to virtual machine (VM) instances on a configurable, periodic basis. Each connection attempt is called a probe. GCP records the success or failure of each probe.

Health checks and load balancers work together. Based on a configurable number of sequential successful or failed probes, GCP computes an overall health state for each VM in the load balancer. VMs that respond successfully for the configured number of times are considered healthy. VMs that fail to respond successfully for a separate number of times are unhealthy.

GCP uses the overall health state of each VM to determine its eligibility for receiving new requests. In addition to being able to configure probe frequency and health state thresholds, you can configure the criteria that define a successful probe.

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asked 18/09/2024
irwandi irwandi
33 questions
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