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Zorluk: KolayHigh-Performing and Elastic Compute Solutions

A solutions architect is deploying a high-performance distributed application on Amazon EC2 instances in a private subnet. The application nodes require low-latency node-to-node network communication. An Application Load Balancer (ALB) routes traffic to the application, which listens on custom port 8080.

Which combination of configurations will meet these requirements? (Select TWO.)

  1. Launch the EC2 instances in a cluster placement group.Cevap
  2. Configure the ALB target group health check to query port 8080.Cevap
  3. C
    Launch the EC2 instances in a spread placement group.
  4. D
    Configure the ALB target group health check to query the default HTTP port 80.
  5. E
    Launch the EC2 instances in a partition placement group.

Cevap

Launch the EC2 instances in a cluster placement group, and configure the ALB target group health check to query port 8080.
To satisfy the low-latency network requirement, launching the instances in a cluster placement group is necessary because it places instances physically close together on the same underlying hardware. Additionally, because the application is listening on port 8080, configuring the ALB target group health checks to query port 8080 ensures that the health checks succeed and the load balancer can correctly route traffic.

Adım Adım Çözüm

1
Identify network performance requirement.
Low-latency node-to-node network communication requires grouping the instances in a single Availability Zone close to each other, which is achieved using a cluster placement group.
Other placement groups like spread or partition focus on high availability and fault isolation rather than maximum network performance.
2
Identify health check port configuration.
Since the application listens on custom port 8080, configure the health check port to explicitly query 8080.
Leaving the target group health check on default port 80 would fail to establish a connection with the application, falsely marking all instances as unhealthy.

Anahtar Kavram

Selecting cluster placement groups for low-latency compute workloads, and matching target group health check ports with application listening ports.
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High-Performing and Elastic Compute Solutions

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