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Answer: The managed instance group's health check is failing repeatedly, possibly due to a misconfigured health check or firewall rules preventing the health check from accessing the instances.
The correct answer is D because instances, whether normal or preemptible, are terminated and relaunched if the health check fails. This could be due to an improperly configured application or firewall rules that block health check access. GCP's health check system periodically probes VM instances to determine their health state. Based on the success or failure of these probes, GCP decides the eligibility of VMs to receive new requests. Proper configuration of health checks, including probe frequency and success criteria, is crucial for maintaining VM health and stability.
Author: LeetQuiz Editorial Team
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In a managed instance group composed of preemptible VMs, you observe that all VMs are being deleted and recreated every minute. What could be a potential reason for this behavior?
A
The zonal capacity is limited, leading to the shutdown of all preemptible VMs to reclaim capacity. Consider deploying your group to a different zone.
B
You have reached your instance quota for the region.
C
The managed instance group's VMs are configured to last only 1 minute in preemptible settings.
D
The managed instance group's health check is failing repeatedly, possibly due to a misconfigured health check or firewall rules preventing the health check from accessing the instances.
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