Alibaba Exam ACA-Database Topic 5 Question 5 Discussion

Actual exam question for Alibaba's ACA-Database exam

Question #: 5
Topic #: 5

You can purchase more read-only nodes after you have created a cluster. If the primary node fails, the system automatically promotes the read-only node with the highest failover priority to become the new primary node while restoring the faulty node.

ATrue

BFalse

Show Suggested Answer

Suggested Answer: A

Each node in a PolarDB cluster has a failover priority. The system performs the following steps to automatically elect a primary node:

Find all the read-only nodes that can be elected as the primary node.

Select one or more read-only nodes that have the highest failover priority.

If the failover to the first node fails due to reasons, such as network issues and abnormal replication status, the system tries to switch to another node until the failover succeeds.

https://www.alibabacloud.com/help/doc-detail/141229.htm?spm=a2c63.p38356.b99.113.36df231dK2DVX0

by Reita at May 03, 2022, 02:33 PM

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