Which permission is NOT required for cluster operations?

In the context of cluster operations, the permission that is not required is the 'View permission.' This permission primarily allows users to see or access data, but it does not grant them the ability to perform any changes or operations on the cluster itself.

Cluster operations typically involve actions such as adding, deleting, or performing mass operations on data sets. Therefore, permissions that enable users to add data, delete data, or conduct mass operations are essential for these tasks. 'Add permission,' 'Delete permission,' and 'Cluster mass operations permission' directly relate to the ability to manipulate data within the cluster, making them necessary for operational functionality.

By contrast, 'View permission' serves a different purpose, allowing users to access information without enabling them to make modifications or execute operations, which is why it is not considered necessary for performing cluster operations.