Transaction Model
🏗️ CLI Command Hierarchy & Navigation
The CLI is organized like a file system. You move “down” into specific modes to manage objects and “up” to return to the global level.
- EXEC Mode (
#): The top-level mode. From here, you can access all other sub-modes. - Navigation Commands:
scope <object>: Moves into a sub-mode for an existing object (e.g.,scope chassis 1).enter <object>: Similar to scope, but used to enter or create an object’s mode.exit: Moves up one level in the hierarchy.top: Jumps immediately back to the EXEC mode prompt.
🛠️ Common Management Commands
| Target | Command | Purpose |
| Chassis | show chassis [inventory/status/psu] | View physical chassis health and components. |
| Servers | show server [inventory/cpu/memory/status] | Audit blade or rack-mount hardware specs. |
| Fabric | show fabric-interconnect [a/b] [inventory] | Check the state of your Fabric Interconnects. |
| Faults | show fault [detail/severity] | List active system alarms and errors. |
| Logs | show sel [chassis-id/blade-id] | View the System Event Log for specific hardware. |
💾 The Transactional Model (Commit Buffer)
Unlike many traditional CLIs, UCS Manager uses a transactional model. When you make a configuration change (like set or enable), the change is stored in a temporary buffer and is not live until you explicitly save it.
- Modify:
set addr 192.168.1.50 - Verify:
show configuration pending(Optional) - Apply:
commit-buffer - Discard:
discard-buffer(If you made a mistake)
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