PCD Question 68

Community Discussion

Written by other learners. Comments can disagree with the marked answer — check the official documentation when in doubt.

• Chose B1

  maxSurge = 0, maxUnavailable = 1)

• Chose A1

  The correct answer is A. Perform a rolling-action with maxSurge set to 1, maxUnavailable set to 0. Here's why: Rolling Update: A rolling update is the best approach for deploying new versions of your application to a managed instance group while minimizing downtime and ensuring a smooth transition. maxSurge : This parameter controls the maximum number of instances that can be added to the group during the update. Setting maxSurge to 1 means that only one additional instance will be created beyond the target size of the group. This helps to minimize costs by avoiding unnecessary instance creation. maxUnavailable : This parameter controls the maximum number of instances that can be taken offline during the update. Setting maxUnavailable to 0 ensures that no existing instances are taken offline until the newly created instance is healthy. This guarantees that the deployment only continues if the new instance is healthy.

• 1

  Let's break down why the other options are incorrect: B. Perform a rolling-action with maxSurge set to 0, maxUnavailable set to 1: This would allow one instance to be taken offline before the new instance is healthy, potentially causing downtime. C. Perform a rolling-action with maxHealthy set to 1, maxUnhealthy set to 0: maxHealthy and maxUnhealthy are not valid parameters for rolling updates. They are used for regional instance group managers, not managed instance groups. D. Perform a rolling-action with maxHealthy set to 0, maxUnhealthy set to 1: Similar to option C, these parameters are not applicable to managed instance groups.