An administrator needs to allow wide open access to one particular NC2 AWS cluster from...

To allow wide open access to a particular NC2 AWS cluster from an on-premises subnet (10.19.160.0/24), the proper Custom Security Group formatting needs to include the necessary tags that specify the external cluster UUID and the networks allowed.

Custom Security Group Configuration:

The configuration should include tags to identify the cluster and the networks that should be granted access.

Key: nutanix:clusters

Key: nutanix:clusters:external

Value: < cluster-uuid >

Explanation of Choice:

Option Bincludes the necessary tags and values, ensuring that the specific cluster UUID is recognized and the on-premises subnet (10.19.160.0/24) can communicate with the NC2 cluster.

Security Group Tags:

nutanix:clusters:external- Identifies the cluster as external.

nutanix:clusters:external:cluster-uuid- Specifies the unique identifier for the cluster, enabling proper traffic routing and access.

Nutanix Cloud Clusters on AWS Administration Guide

AWS Security Group Documentation

Nutanix Best Practices for Custom Security Group Configuration