Oracle X10 - Page 44

Maintenance mode
Before you can safely take a server offline, it must be placed in maintenance mode. In a
Private Cloud Appliance environment this means that a compute node must not host any
running compute instances, that it is under maintenance lock, and that provisioning has been
disabled. An appliance administrator must perform these tasks from the Service Enclave.
For more information about locking nodes for maintenance, migrating compute instances, and
configuring high availability in the Compute service, refer to the chapter Hardware
Administration in the Oracle Private Cloud Appliance Administrator Guide.
Power Down a Node from the Service Enclave
Note:
Always perform a graceful shutdown. It ensures that all data is saved and the system
is ready for restart.
1. Ensure that no compute instances are running on this node, and that the maintenance and
provisioning locks are active.
2. From the Service Enclave, issue the Stop command.
See Hardware Administration in the Oracle Private Cloud Appliance Administrator Guide.
• Service Web UI: In the Rack Units table, click the action menu (three vertical dots) and
select Stop.
• Service CLI: Enter the command
stop ComputeNode id=<node-id> .
Alternative Ways to Power Down a Node
If the Stop command from the Service Enclave does not cause the node to power down as
expected, try these alternatives:
Use the Oracle Integrated Lights Out Manager (ILOM)
1. Log in to the ILOM UI or CLI using an Administrator account.
2. Perform a graceful shutdown.
• ILOM UI: In the left pane, click Host Management, select Power Control, and click
Graceful Shutdown and Power Off from the Select Action list. Click Save, and then
click OK.
• ILOM CLI: At the prompt, enter the command stop /System .
Use the On/Standby Button
1. By default, the front panel On/Standby button is disabled. Log in to the ILOM, go under
SP/policy and enter the command: set EXTERNAL_POWER_BUTTON_OVERRIDE=disabled .
2. Perform a graceful shutdown.
Press and quickly release the On/Standby button on the front panel.
This action causes ACPI-enabled operating systems to perform an orderly shutdown of
the operating system.
Chapter 5
Preparing the Server for Component Replacement
5-5