- Preface
- Overview of Cisco Unified Computing System
- Overview of Cisco UCS Manager
- Overview of Cisco UCS Manager CLI
- Configuring the Fabric Interconnects
- Configuring Ports and Port Channels
- Configuring Communication Services
- Configuring Authentication
- Configuring Organizations
- Configuring Role-Based Access Control
- Configuring DNS Servers
- Configuring System-Related Policies
- Managing Licenses
- Managing Virtual Interfaces
- Registering Cisco UCS Domains with Cisco UCS Central
- VLANs
- Configuring LAN Pin Groups
- Configuring MAC Pools
- Configuring Quality of Service
- Configuring Network-Related Policies
- Configuring Upstream Disjoint Layer-2 Networks
- Configuring Named VSANs
- Configuring SAN Pin Groups
- Configuring WWN Pools
- Configuring Storage-Related Policies
- Configuring Fibre Channel Zoning
- Configuring Server-Related Pools
- Setting the Management IP Address
- Configuring Server-Related Policies
- Configuring Server Boot
- Deferring Deployment of Service Profile Updates
- Service Profiles
- Configuring Storage Profiles
- Managing Power in Cisco UCS
- Managing Time Zones
- Managing the Chassis
- Managing Blade Servers
- Managing Rack-Mount Servers
- CIMC Session Management
- Managing the I/O Modules
- Backing Up and Restoring the Configuration
- Recovering a Lost Password
- Rack-Mount Server Management
- Guidelines for Removing and Decommissioning Rack-Mount Servers
- Recommendations for Avoiding Unexpected Server Power Changes
- Booting a Rack-Mount Server
- Shutting Down a Rack-Mount Server
- Power Cycling a Rack-Mount Server
- Performing a Hard Reset on a Rack-Mount Server
- Acknowledging a Rack-Mount Server
- Decommissioning a Rack-Mount Server
- Renumbering a Rack-Mount Server
- Removing a Rack-Mount Server
- Turning On the Locator LED for a Rack-Mount Server
- Turning Off the Locator LED for a Rack-Mount Server
- Resetting the CMOS for a Rack-Mount Server
- Resetting the CIMC for a Rack-Mount Server
- Clearing TPM for a Rack-Mount Server
- Recovering the Corrupt BIOS on a Rack-Mount Server
- Showing the Status for a Rack-Mount Server
- Issuing an NMI from a Rack-Mount Server
Managing Rack-Mount Servers
This chapter includes the following sections:
- Rack-Mount Server Management
- Guidelines for Removing and Decommissioning Rack-Mount Servers
- Recommendations for Avoiding Unexpected Server Power Changes
- Booting a Rack-Mount Server
- Shutting Down a Rack-Mount Server
- Power Cycling a Rack-Mount Server
- Performing a Hard Reset on a Rack-Mount Server
- Acknowledging a Rack-Mount Server
- Decommissioning a Rack-Mount Server
- Renumbering a Rack-Mount Server
- Removing a Rack-Mount Server
- Turning On the Locator LED for a Rack-Mount Server
- Turning Off the Locator LED for a Rack-Mount Server
- Resetting the CMOS for a Rack-Mount Server
- Resetting the CIMC for a Rack-Mount Server
- Clearing TPM for a Rack-Mount Server
- Recovering the Corrupt BIOS on a Rack-Mount Server
- Showing the Status for a Rack-Mount Server
- Issuing an NMI from a Rack-Mount Server
Rack-Mount Server Management
You can manage and monitor all rack-mount servers that are integrated with a Cisco UCS domain through Cisco UCS Manager. All management and monitoring features are supported for rack-mount servers except power capping. Some rack-mount server management tasks, such as changes to the power state, can be performed from both the server and service profile. The remaining management tasks can only be performed on the server.
Cisco UCS Manager provides information, errors, and faults for each rack-mount server that it has discovered.
 Tip | For information on how to integrate a supported Cisco UCS rack-mount server with Cisco UCS Manager, see the Cisco UCS C-series server integration guide or Cisco UCS S-series server integration guide for your Cisco UCS Manager release. |
Guidelines for Removing and Decommissioning Rack-Mount Servers
Consider the following guidelines when deciding whether to remove or decommission a rack-mount server using Cisco UCS Manager:
Decommissioning a Rack-Mount server
Decommissioning is performed when a rack-mount server is physically present and connected but you want to temporarily remove it from the configuration. Because it is expected that a decommissioned rack-mount server will be eventually recommissioned, a portion of the server's information is retained by Cisco UCS Manager for future use.
Removing a Rack-Mount server
Removing is performed when you physically remove the server from the system by disconnecting the rack-mount server from the fabric extender. You cannot remove a rack-mount server from Cisco UCS Manager if it is physically present and connected to the fabric extender. Once the rack-mount server is disconnected, the configuration for that rack-mount server can be removed in Cisco UCS Manager.
During removal, management interfaces are disconnected, all entries from databases are removed, and the server is automatically removed from any server pools that it was assigned to during discovery.
 Note | Only those servers added to a server pool automatically during discovery will be removed automatically. Servers that have been manually added to a server pool have to be removed manually. |
If you need to add a removed rack-mount server back to the configuration, it must be reconnected and then rediscovered. When a server is reintroduced to Cisco UCS Manager it is treated like a new server and is subject to the deep discovery process. For this reason, it's possible that Cisco UCS Manager will assign the server a new ID that may be different from the ID that it held before.
Recommendations for Avoiding Unexpected Server Power Changes
If a server is not associated with a service profile, you can use any available means to change the server power state, including the physical Power or Reset buttons on the server.
If a server is associated with, or assigned to, a service profile, you should only use the following methods to change the server power state:
-
In Cisco UCS Manager GUI, go to the General tab for the server or the service profile associated with the server and select Boot Server or Shutdown Server from the Actions area.
-
In Cisco UCS Manager CLI, scope to the server or the service profile associated with the server and use the power up or power down commands.
Do not use any of the following options on an associated server that is currently powered off:
If you reset, cycle, or use the physical power buttons on a server that is currently powered off, the server's actual power state might become out of sync with the desired power state setting in the service profile. If the communication between the server and Cisco UCS Manager is disrupted or if the service profile configuration changes, Cisco UCS Manager might apply the desired power state from the service profile to the server, causing an unexpected power change.
Power synchronization issues can lead to an unexpected server restart, as shown below:
|
Desired Power State in Service Profile |
Current Server Power State |
Server Power State After Communication Is Disrupted |
||
|---|---|---|---|---|
|
Up |
Powered Off |
Powered On |
||
|
Down |
Powered On |
Powered On
|
Booting a Rack-Mount Server
Associate a service profile with a rack-mount server.
The following example boots the rack-mount server associated with the service profile named ServProf34 and commits the transaction:
UCS-A# scope org / UCS-A /org* # scope service-profile ServProf34 UCS-A /org/service-profile # power up UCS-A /org/service-profile* # commit-buffer UCS-A /org/service-profile #
Shutting Down a Rack-Mount Server
When you use this procedure to shut down a server with an installed operating system, Cisco UCS Manager triggers the OS into a graceful shutdown sequence.
Associate a service profile with a rack-mount server.
The following example shuts down the rack-mount server associated with the service profile named ServProf34 and commits the transaction:
UCS-A# scope org / UCS-A /org # scope service-profile ServProf34 UCS-A /org/service-profile # power down UCS-A /org/service-profile* # commit-buffer UCS-A /org/service-profile #
Power Cycling a Rack-Mount Server
The following example immediately power cycles rack-mount server 2 and commits the transaction:
UCS-A# scope server 2 UCS-A /server # cycle cycle-immediate UCS-A /server* # commit-buffer UCS-A /server #
Performing a Hard Reset on a Rack-Mount Server
When you reset a server, Cisco UCS Manager sends a pulse on the reset line. You can choose to gracefully shut down the operating system. If the operating system does not support a graceful shutdown, the server is power cycled. The option to have Cisco UCS Manager complete all management operations before it resets the server does not guarantee the completion of these operations before the server is reset.
Note | If you are trying to boot a server from a power-down state, you should not use Reset. If you continue the power-up with this process, the desired power state of the servers become out of sync with the actual power state and the servers might unexpectedly shut down at a later time. To safely reboot the selected servers from a power-down state, click Cancel, then select the Boot Server action. |
The following example performs an immediate hard reset of rack-mount server 2 and commits the transaction:
UCS-A# scope server 2 UCS-A /server # reset hard-reset-immediate UCS-A /server* # commit-buffer UCS-A /server #
Acknowledging a Rack-Mount Server
Perform the following procedure to rediscover the server and all endpoints in the server. For example, you can use this procedure if a server is stuck in an unexpected state, such as the discovery state.
| Command or Action | Purpose |
|---|
The following example acknowledges rack-mount server 2 and commits the transaction:
UCS-A# acknowledge server 2 UCS-A* # commit-buffer UCS-A #
Decommissioning a Rack-Mount Server
| Command or Action | Purpose |
|---|
The following example decommissions rack-mount server 2 and commits the transaction:
UCS-A# decommission server 2 UCS-A* # commit-buffer UCS-A #
Renumbering a Rack-Mount Server
If you are swapping IDs between servers, you must first decommission both servers, then wait for the server decommission FSM to complete before proceeding with the renumbering steps.
The following example decommissions a rack-mount server with ID 2, changes the ID to 3, recommissions that server, and commits the transaction:
UCS-A# show server inventory Server Equipped PID Equipped VID Equipped Serial (SN) Slot Status Ackd Memory (MB) Ackd Cores ------- ------------ ------------ -------------------- ---------------- ---------------- ---------- 1/1 UCSB-B200-M3 V01 FCH1532718P Equipped 131072 16 1/2 UCSB-B200-M3 V01 FCH153271DF Equipped 131072 16 1/3 UCSB-B200-M3 V01 FCH153271DL Equipped 114688 16 1/4 UCSB-B200-M3 V01 Empty 1/5 Empty 1/6 Empty 1/7 N20-B6730-1 V01 JAF1432CFDH Equipped 65536 16 1/8 Empty 1 R200-1120402W V01 QCI1414A02J N/A 49152 12 2 R210-2121605W V01 QCI1442AHFX N/A 24576 8 4 UCSC-BSE-SFF-C200 V01 QCI1514A0J7 N/A 8192 8 UCS-A# decommission server 2 UCS-A*# commit-buffer UCS-A# show server decommissioned Vendor Model Serial (SN) Server ----------------- ---------- ----------- ------ Cisco Systems Inc R210-2121605W QCI1442AHFX 2 UCS-A# recommission chassis "Cisco Systems Inc" "R210-2121605W" QCI1442AHFX 3 UCS-A* # commit-buffer UCS-A # show server inventory Server Equipped PID Equipped VID Equipped Serial (SN) Slot Status Ackd Memory (MB) Ackd Cores ------- ------------ ------------ -------------------- ---------------- ---------------- ---------- 1/1 UCSB-B200-M3 V01 FCH1532718P Equipped 131072 16 1/2 UCSB-B200-M3 V01 FCH153271DF Equipped 131072 16 1/3 UCSB-B200-M3 V01 FCH153271DL Equipped 114688 16 1/4 UCSB-B200-M3 V01 Empty 1/5 Empty 1/6 Empty 1/7 N20-B6730-1 V01 JAF1432CFDH Equipped 65536 16 1/8 Empty 1 R200-1120402W V01 QCI1414A02J N/A 49152 12 3 R210-2121605W V01 QCI1442AHFX N/A 24576 8 4 UCSC-BSE-SFF-C200 V01 QCI1514A0J7 N/A 8192 8
Removing a Rack-Mount Server
Physically disconnect the CIMC LOM cables that connect the rack-mount server to the fabric extender before performing the following procedure. For high availability setups, remove both cables.
| Command or Action | Purpose |
|---|
The following example removes rack-mount server 4 and commits the transaction:
UCS-A# remove server 4 UCS-A* # commit-buffer UCS-A #
If you physically reconnect the rack-mount server, you must re-acknowledge it for the Cisco UCS Manager to rediscover the server.
For more information, see Acknowledging a Rack-Mount Server.
Turning On the Locator LED for a Rack-Mount Server
| Command or Action | Purpose |
|---|
The following example turns on the locator LED for rack-mount server 2 and commits the transaction:
UCS-A# scope server 2 UCS-A /server # enable locator-led UCS-A /server* # commit-buffer UCS-A /server #
Turning Off the Locator LED for a Rack-Mount Server
| Command or Action | Purpose |
|---|
The following example turns off the locator LED for rack-mount server 2 and commits the transaction:
UCS-A# scope server 2 UCS-A /server # disable locator-led UCS-A /server* # commit-buffer UCS-A /server #
Resetting the CMOS for a Rack-Mount Server
Sometimes, troubleshooting a server might require you to reset the CMOS. Resetting the CMOS is not part of the normal maintenance of a server.
| Command or Action | Purpose |
|---|
The following example resets the CMOS for rack-mount server 2 and commits the transaction:
UCS-A# scope server 2 UCS-A /server # reset-cmos UCS-A /server* # commit-buffer UCS-A /server #
Resetting the CIMC for a Rack-Mount Server
Sometimes, with the firmware, troubleshooting a server might require you to reset the CIMC. Resetting the CIMC is not part of the normal maintenance of a server. After you reset the CIMC, the CIMC reboots with the running version of the firmware for that server.
The following example resets the CIMC for rack-mount server 2 and commits the transaction:
UCS-A# scope server 2 UCS-A /server # scope CIMC UCS-A /server/cimc # reset UCS-A /server/cimc* # commit-buffer UCS-A /server/cimc #
Clearing TPM for a Rack-Mount Server
You can clear TPM only on Cisco UCS M4 blade and rack-mount servers that include support for TPM.
 Caution | Clearing TPM is a potentially hazardous operation. The OS may stop booting. You may also see loss of data. |
The following example shows how to clear TPM for a rack-mount server:
UCS-A# scope server 3 UCS-A# /server # scope tpm 1 UCS-A# /server/tpm # set adminaction clear-config UCS-A# /server/tpm* # commit-buffer
Recovering the Corrupt BIOS on a Rack-Mount Server
On rare occasions, an issue with a rack-mount server may require you to recover the corrupted BIOS. This procedure is not part of the normal maintenance of a rack-mount server. After you recover the BIOS, the rack-mount server boots with the running version of the firmware for that server.
Remove all
attached or mapped USB storage from a server before you attempt to recover the
corrupt BIOS on that server. If an external USB drive is attached or mapped
from vMedia to the server, BIOS recovery fails.
| Command or Action | Purpose |
|---|
The following example shows how to recover the BIOS:
UCS-A# scope server 1 UCS-A /server # recover-bios S5500.0044.0.3.1.010620101125 UCS-A /server* # commit-buffer UCS-A /server #
Showing the Status for a Rack-Mount Server
| Command or Action | Purpose |
|---|
Server Slot Status Availability Overall Status Discovery -------------------------------------------------------------------- 1/1 Equipped Unavailable Ok Complete 1/2 Equipped Unavailable Ok Complete 1/3 Equipped Unavailable Ok Complete 1/4 Empty Unavailable Ok Complete 1/5 Equipped Unavailable Ok Complete 1/6 Equipped Unavailable Ok Complete 1/7 Empty Unavailable Ok Complete 1/8 Empty Unavailable Ok Complete 1 Equipped Unavailable Ok Complete 2 Equipped Unavailable Ok Complete
Issuing an NMI from a Rack-Mount Server
Perform the following procedure if the system remains unresponsive and you need Cisco UCS Manager to issue a Non-Maskable Interrupt (NMI) to the BIOS or operating system from the CIMC. This action creates a core dump or stack trace, depending on the operating system installed on the server.
| Command or Action | Purpose |
|---|
The following example sends an NMI from server 4 in chassis 2 and commits the transaction:
UCS-A# scope server 2/4 UCS-A /chassis/server # diagnostic-interrupt UCS-A /chassis/server* # commit-buffer UCS-A /chassis/server #
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