Your Auto Scaling group is attached to an ELB, but instances remain in the 'OutOfService' state in the ELB console. What is the first setting you should verify?

medium📝 Debug Q7 of 15

AWS - Auto Scaling

AThe health check configuration on the ELB matches the health check settings on the Auto Scaling group.

BThe Auto Scaling group has the correct IAM role attached.

CThe instances have the latest AWS CLI installed.

DThe ELB is configured to use cross-zone load balancing.

Step-by-Step Solution

Solution:

Step 1: Understand 'OutOfService' status
Instances are marked 'OutOfService' if they fail ELB health checks.
Step 2: Check health check settings
Mismatch between ELB and Auto Scaling health checks can cause failures.
Final Answer:
Verify ELB and Auto Scaling group health check configurations match. -> Option A
Quick Check:
Health check mismatch causes 'OutOfService' [OK]

Quick Trick: Match ELB and Auto Scaling health checks first [OK]

Common Mistakes:

MISTAKES

Assuming IAM role affects instance health
Believing AWS CLI version impacts ELB status
Confusing cross-zone load balancing with health checks

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More AWS Quizzes

Your Auto Scaling group is attached to an ELB, but instances remain in the 'OutOfService' state in the ELB console. What is the first setting you should verify?

Step 1: Understand 'OutOfService' status

Step 2: Check health check settings

Final Answer:

Quick Check:

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