[Spectrum-X Configuration] When upgrading Cumulus Linux to a new version, which configuration files should be migrated from the old installation?…

The Cumulus Linux upgrade process is designed to preserve user-defined configurations to ensure operational continuity. The system automatically migrates critical configuration files. This includes network interface configurations stored in the /etc/network directory (primarily interfaces) and user-defined Access Control Lists (ACLs) located in /etc/cumulus/acl. Preserving these specific directories ensures that the switch's networking and security policies are maintained after the software upgrade is complete.

C. Migrating all files in /etc is incorrect. This would overwrite new default configurations from the upgraded version, which can lead to system instability and conflicts.

D. /etc/mix is not a standard directory for critical Cumulus Linux configurations that are designated for migration during a system upgrade.

1. NVIDIA Cumulus Linux User Guide 5.8, Chapter: System, Section: Upgrading Cumulus Linux: "The upgrade process preserves your configurations in /etc/network/interfaces, /etc/cumulus/ports.conf, and other files you create. The upgrade process also preserves any changes you make to /etc/cumulus/switchd.conf." This confirms that files within /etc/network and /etc/cumulus are preserved.

2. NVIDIA Cumulus Linux User Guide 5.8, Chapter: Layer 2, Section: Access Control Lists: This section details how ACLs are configured and applied, with rules typically stored in files within the /etc/cumulus/acl/ directory. As these are fundamental, user-defined security policies, they are preserved during an upgrade.

3. NVIDIA Cumulus Linux User Guide 5.8, Chapter: Layer 3, Section: Configuring Network Interfaces: "You configure interfaces in the /etc/network/interfaces file." This establishes /etc/network as the location for core networking configuration, which must be migrated.