An administrator needs to perform patching on a MongoDB server cluster within an NDB environment. How should the administrator accomplish this task?

Question

Options

• APerform a rolling upgrade, applying the patch to the primary member first, followed by the
• BApply the patch to all nodes at once.
• CPerform a rolling upgrade, applying the patch to the secondary members first, followed by the
• DDisable the replica set while patching.

• A
  5% (1)
• B
  5% (1)
• C
  82% (18)
• D
  9% (2)

Explanation

The administrator should perform a rolling upgrade, applying the patch to the secondary members first, followed by the primary member, to accomplish the task of patching a MongoDB server cluster within an NDB environment. A rolling upgrade is a method of applying patches or updates to a cluster without downtime or interruption of service. The administrator can use the NDB patching feature to perform a rolling upgrade on a MongoDB server cluster, which consists of a primary member and one or more secondary members that form a replica set. The NDB patching feature allows the administrator to select the software profile version, the database parameters profile, and the network profile for the patching operation.

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