DOP-C02 · Question #395
A DevOps team operates an integration service that runs on an Amazon EC2 instance. The DevOps team uses Amazon Route 53 to manage the integration service's domain name by using a simple routing record
The correct answer is A. Update the existing Route 53 DNS record's routing policy to weighted. Set the existing DNS. By switching your Route 53 record to a weighted policy with the primary instance at weight 100 and the standby at weight 0 (and attaching health checks to both), you ensure that all traffic goes to the primary while it’s healthy. If the primary fails its health check, it’s remove
Question
A DevOps team operates an integration service that runs on an Amazon EC2 instance. The DevOps team uses Amazon Route 53 to manage the integration service's domain name by using a simple routing record. The integration service is stateful and uses Amazon Elastic File System (Amazon EFS) for data storage and state storage. The integration service does not support load balancing between multiple nodes. The DevOps team deploys the integration service on a new EC2 instance as a warm standby to reduce the mean time to recovery. The DevOps team wants the integration service to automatically fail over to the standby EC2 instance. Which solution will meet these requirements?
Options
- AUpdate the existing Route 53 DNS record's routing policy to weighted. Set the existing DNS
- BUpdate the existing Route 53 DNS record's routing policy to weighted. Set the existing DNS
- CCreate an Application Load Balancer (ALB). Update the existing Route 53 record to point to the
- DCreate an Application Load Balancer (ALB). Update the existing Route 53 record to point to the
How the community answered
(35 responses)- A74% (26)
- B9% (3)
- C14% (5)
- D3% (1)
Explanation
By switching your Route 53 record to a weighted policy with the primary instance at weight 100 and the standby at weight 0 (and attaching health checks to both), you ensure that all traffic goes to the primary while it’s healthy. If the primary fails its health check, it’s removed from DNS responses and the only remaining healthy record is the standby, automatically directing traffic there without any extra infrastructure.
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