AWS Certified DevOps Engineer - Professional
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A company's application relies on an Amazon Aurora cluster with a single DB instance for data storage. The application uses the cluster's instance endpoint for both read and write operations. The company plans to perform an update during a maintenance window, and it is crucial that the cluster remains operational with minimal disruptions. What measures should a DevOps engineer implement to ensure the Aurora cluster's availability during this maintenance period?
A
Add a reader instance to the Aurora cluster. Update the application to use the Aurora cluster endpoint for write operations. Update the Aurora cluster's reader endpoint for reads.
B
Add a reader instance to the Aurora cluster. Create a custom ANY endpoint for the cluster. Update the application to use the Aurora cluster's custom ANY endpoint for read and write operations.
C
Turn on the Multi-AZ option on the Aurora cluster. Update the application to use the Aurora cluster endpoint for write operations. Update the Aurora cluster’s reader endpoint for reads.
D
Turn on the Multi-AZ option on the Aurora cluster. Create a custom ANY endpoint for the cluster. Update the application to use the Aurora cluster's custom ANY endpoint for read and write operations.