Solution for Ensuring Cisco UCS Manager Availability over HTTPS

A.

The correct answer for this question is D. Generate a new default key ring certificate from the Cisco UCS Manager.

Explanation:

When a domain name change occurs at a customer site, the Cisco UCS cluster must be renamed to reflect the change. As a result, the certificate that was previously used to secure HTTPS connections to the UCS Manager will no longer be valid, as it was issued for the old domain name. To ensure that the UCS Manager remains available over HTTPS, a new certificate must be generated.

The default key ring certificate is used to secure HTTPS connections to the UCS Manager. It is automatically generated by the UCS Manager during the initial setup process. To generate a new default key ring certificate from the UCS Manager, follow these steps:

1. Log in to the UCS Manager.
2. Click on the Admin tab, and then click on the Key Management sub-tab.
3. Click on the Generate CSR button.
4. Enter the required information, including the new domain name, and click on the Generate button.
5. Submit the CSR to a trusted Certificate Authority (CA) to obtain a new certificate.
6. Once the new certificate has been obtained, click on the Import Certificate button in the UCS Manager and provide the new certificate.
7. After importing the new certificate, the UCS Manager will automatically update the default key ring certificate, and HTTPS connections to the UCS Manager will be secured with the new certificate.

In summary, to ensure that the UCS Manager is available over HTTPS after a domain name change, a new default key ring certificate must be generated from the UCS Manager. This can be done by generating a new CSR, obtaining a new certificate from a trusted CA, and importing the new certificate into the UCS Manager.