Exam Associate Cloud Engineer topic 1 question 57 discussion

Correct option is B. We need to ensure the global capacity remains intact, for that reason we need to establish maxUnavailable to 0. On the other hand, we need to ensure new instances can be created. We do that by establishing the maxSurge to 1. Option C is more expensive and more difficult to set up and option D won't meet requirements since it won't keep global capacity intact.

I take my own previous comment back. It's definitely B.

I vote for A. A rolling update with maxSurge set to 0 ensures that no additional instances beyond the desired size are created during the update. By setting maxUnavailable to 1, only one instance is taken down at a time, minimizing the impact on the available capacity during the deployment. This approach allows the rolling deployment to proceed in a controlled manner, with each new version gradually replacing instances without decreasing the overall capacity and with zero downtime. Not Option B because setting maxSurge to 1 and maxUnavailable to 0, could lead to temporarily increased capacity during the update, and it might result in higher resource usage than necessary. This option may not guarantee zero downtime or minimize the impact on the available capacity during the deployment.

B is the clean way: https://medium.com/@bubu.tripathy/understanding-maxsurge-and-maxunavailable-4966dfafc8ba

B is the correct answer

Answer B is the correct answer because it allows for a safe and controlled rolling deployment with zero downtime and without reducing the available capacity during the deployment. The `maxSurge` parameter controls the maximum number of new instances that can be created above the desired number of instances during the update process. By setting `maxSurge` to 1, the new version of the application can be gradually rolled out while maintaining the same number of available instances. The `maxUnavailable` parameter controls the maximum number of instances that can be unavailable during the update process. By setting `maxUnavailable` to 0, at least one instance of the previous version will be available at all times, ensuring that there is no decrease in available capacity during the deployment. By performing a rolling update with `maxSurge` set to 1 and `maxUnavailable` set to 0, the new version of the application can be gradually deployed with zero downtime and no decrease in available capacity.

If you do not want any unavailable machines during an update, set the maxUnavailable value to 0 and the maxSurge value to greater than 0. With these settings, Compute Engine removes each old machine only after its replacement new machine is created and running. https://cloud.google.com/compute/docs/instance-groups/rolling-out-updates-to-managed-instance-groups#max_unavailable

If you do not want any unavailable machines during an update, set the maxUnavailable value to 0 and the maxSurge value to greater than 0. With these settings, Compute Engine removes each old machine only after its replacement new machine is created and running.

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B is Correct

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I have seen this question in others websites, and in all of them, the answer is B B B!!.

B. maxUnavailable set to 0 is the key

it should be B. if we change template it cause outage and question said no outage allowed.

Answer is B

Correct option is B. Perform a rolling-action start-update with maxSurge set to 1 and maxUnavailable set to 0. This is also present on Tutorial Dojo practice questions.

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