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Difficulty: EasyAWS Elastic Beanstalk

A developer needs to configure an update strategy for an application running on AWS Elastic Beanstalk. The application must maintain 100%100\% of its provisioned capacity throughout the deployment process to avoid performance degradation. Which two Elastic Beanstalk deployment policies will ensure that capacity is never reduced during the update? (Select TWO)

  1. ImmutableAnswer
  2. Rolling with additional batchAnswer
  3. C
    Rolling
  4. D
    All at once
  5. E
    Blue/Green

Answer

The Immutable and Rolling with additional batch deployment policies both ensure that capacity is never reduced during the update.
The Immutable and Rolling with additional batch deployment policies both maintain 100%100\% of the environment's provisioned capacity during an update. Immutable launches a temporary Auto Scaling group to deploy the new version, while Rolling with additional batch launches an extra batch of instances before updating existing ones. In both cases, the existing healthy capacity is never reduced.

Step-by-Step Solution

1
Analyze the capacity requirement during deployment
The application requires 100%100\% of its provisioned capacity to be active at all times.
To prevent performance degradation during the update process.
2
Evaluate in-environment Elastic Beanstalk deployment policies
Immutable deployment deploys to a new temporary Auto Scaling group before switching, and Rolling with additional batch launches an extra batch of instances before updating existing ones. Both keep existing instances fully operational.
To select the strategies that do not take existing capacity offline without replacement.

Key Concept

AWS Elastic Beanstalk deployment policies and their impact on environment capacity.
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Topics

AWS Elastic Beanstalk

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