4. Sync the hardware clock
#
pdsh -w nid000[00-47] "hwclock --systohc "
5. Restart the NTP server by issuing the
systemctl start ntpd
command:
#
pdsh -w nid000[00-47] " systemctl start ntpd"
3.3.6
Reboot a Stopped System Management Workstation (SMW)
About this task
The SMW is an integral player in monitoring and maintaining optimal High Speed Network (HSN) traffic. If the
SMW is down or being rebooted (i.e., not fully working), the Aries Network Card Controllers (ANCCs) will
automatically throttle the high-speed network because the ANCCs are no longer hearing SMW heartbeats. This is
done in order to prevent possible network congestion, which normally requires the SMW to be up in order to
respond to such congestion. Once the SMW is up again, the ANCCs will unthrottle the network. (No attempt is
made to prevent loss of data or to carry out operations that occur when the SMW is offline). The consequences of
throttling are that the network will perform much more slowly than normal.
When the SMW comes up, it restarts, establishes communications with all external interfaces, restores the proper
state in the state manager, and continues normal operation without user intervention.
For a scheduled or unscheduled shutdown and reboot of the SMW, it is necessary to have a backup of
configuration files so that if one or more of the files in use becomes corrupted, a clean set of files is available with
which to reboot.
Procedure
1. Ensure that there are no resiliency actions taking place (by executing
tail -f /var/opt/cray/log/p0-
default/nlrd-YYYYMMDD
) at the time of a graceful SMW shutdown, otherwise wait until the action is
finished.
#
tail -f /var/opt/cray/log/p0-default/nlrd-YYYYMMDD
2. Boot the SMW.
3.4
Hardware Supervisory System (HSS)
HSS is an integrated system of hardware and software that monitors the hardware components of the system and
proactively manages the health of the system. HSS communicates with nodes and management processors over
an internal (private) Ethernet network that operates independently of the Cray Aries High Speed Network (HSN).
HSS includes the following components:
●
HSS network
●
HSS Command Line Interface (CLI)
●
Aries Network Card Controllers (ANCCs)
System Management
S3016
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