root. This command allows an administrator to grant access to the SMW without granting access to the controller
network nodes.
If
xtccpasswd
is run without options, it prompts for a new password (which will not be echoed to the screen) and
then confirms it. If the two entered passwords match exactly, a salted hash of the password is written to a file
maintained by Cray HSS. Within one minute, all booted controllers in the Urika-GX system will be using the new
password.
For more information, see the
xtccpasswd (8)
man page.
3.4.32 Gather Troubleshooting Information Using the xtdumpsys Command
The
xtdumpsys
command collects and analyzes information from a Cray system that is failing or has failed, has
crashed, or is hung. Analysis is performed on, for example, event log data, active heartbeat probing, voltages,
temperatures, health faults, in-memory console buffers, and high-speed interconnection network errors. When
failed components are found, detailed information is gathered from them. To collect similar information for
components that have not failed, invoke the
xtdumpsys
command with the
--add
option and name the
components from which to collect data.
NOTE: Only the
crayadm
account can execute the
xtdumpsys
command.
For more information, see the
xtdumpsys(8)
man page.
3.5
Dual Aries Network Card (dANC) Management
There are a number of components that are used to perform dANC management on Urika-GX.
dANC Power
By default, the dANCs power up when the rack is powered up. They can however be turned off and on via the
xtcli power
command.
CAUTION: Powering off a dANC on a booted and routed system will route out that card out of the Aries
High Speed Network (HSN) and make all 8 nodes (served by that dANC card) unusable.
dANC uBoot
The Linux
U-boot
utility supports booting a Linux image on the ARM processor (located on the dANC controller)
via net boot or flash boot.
There are 3 valid boot modes for the ANCC and iSCB, as listed below:
1. Boot from flash. This is the default mode.
2. Netboot and write image to flash . This mode is used for software upgrades
3. Netboot and do not write to flash. This is a development option.
The Urika
®
-GX
rackfw
tool enables recovery mode for dANC booting. It will also allow for initializing/setting the
boot mode in NVRAM as follows:
●
Set 1 of 3 ANCC boot modes listed above. If the
nvRAM
is uninitialized or corrupted, it is required to initialize
the
nvRAM
.
System Management
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