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Zorluk: KolayResilient Database Configurations and High Availability

A solutions architect needs to configure an Amazon RDS for MySQL database to support high availability within a single AWS Region. The configuration must provide automatic failover to a standby instance in a different Availability Zone in the event of an infrastructure failure. Which database configuration will meet these requirements with the least administrative effort?

  1. A
    Deploy an RDS read replica in a different Availability Zone and configure the application to manually promote it.
  2. B
    Set up a single-AZ RDS DB instance and configure Route 53 latency routing to fail over to a secondary instance.
  3. Configure an Amazon RDS Multi-AZ DB instance deployment.Cevap
  4. D
    Deploy a scaled-down warm standby database instance in another AWS Region to run startup scripts during a failover event.

Cevap

Configure an Amazon RDS Multi-AZ DB instance deployment.
Deploying the database as an Amazon RDS Multi-AZ DB instance deployment automatically provisions and maintains a synchronous standby replica in a different Availability Zone. If the primary instance fails, Amazon RDS automatically performs a failover to the standby with zero administrative intervention and minimal downtime.

Adım Adım Çözüm

1
Identify the primary goal of establishing database high availability and automatic failover within a single AWS Region with minimum administrative effort.
Determined that the database requires a configuration that synchronously replicates data to another Availability Zone and automatically redirects application traffic during a failure.
This establishes the baseline requirements to evaluate the available Amazon RDS deployment models.
2
Evaluate the capabilities of Amazon RDS Multi-AZ deployments.
Confirmed that Amazon RDS Multi-AZ automatically provisions a synchronous standby replica in a different Availability Zone and performs automatic failover during outages.
This directly aligns with the goal of high availability and automatic failover without manual intervention.
3
Compare the correct solution against alternatives like read replicas, DNS routing policies, and cross-region warm standbys.
Identified that the alternatives either require manual failover processes or are designed for different use cases like read scaling and regional disaster recovery.
This confirms that only the Multi-AZ deployment configuration satisfies all stated requirements with the least administrative effort.

Anahtar Kavram

Amazon RDS Multi-AZ deployments provide high availability, data redundancy, and automatic failover support within a single AWS Region.
Tahmini Süre:45s
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Resilient Database Configurations and High Availability

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