HP XC System Software Installation Guide Version 3.1

info: Executing C50nat nrestart
info: Executing C51nrpe nrestart
info: Executing C52snmp_traps nrestart
info: Executing C66ibmon nrestart
info: Executing C90slurm nrestart
info: Executing C91swmlogger nrestart
info: Executing C95lsf nrestart
info: Executing C30syslogng_forward crestart
info: Executing C35dhcp crestart
info: Executing C50supermond crestart
info: Executing C90munge crestart
info: Executing C90slurm crestart
info: Executing C95lsf crestart
info: nconfig shut down
NOTE: If necessary, see “Troubleshoot the Imaging Process” (page 192) for information about using
the imaging log files to troubleshoot the imaging process.
Proceed to “Task 11: Run the startsys Utility to Start the System and Propagate the Golden Image”.
3.12 Task 11: Run the startsys Utility to Start the System and Propagate
the Golden Image
The first time the entire system is started with the startsys command, power to each node is turned on,
each node boots from its network adapter, and the SystemImager automatic installation environment is
downloaded. This environment automatically installs and configures each node from the golden image.
The startsys command may take several minutes to power on the nodes on large-scale systems because
of scale requirements.
The number of nodes to be installed influences the amount of time it takes to complete the process. After
all nodes are installed, they automatically reboot to the login prompt. This process can take between two
to three hours on a system with 1024 compute nodes.
This release uses the multicast file transfer technology to download software to client nodes during their
image installation. Multicast file transfer technology provides a fast and scalable method of installing
systems. Using multicast imaging sends data to many nodes simultaneously that have been previously
set up to listen to a multicast from the designated image server. Multicast imaging provides very little
resource drain on the image server as compared to other file transfer technologies, and therefore, allows
systems of all sizes to be installed relatively quickly.
Multicast imaging uses the udpcast open source package, and the flamethrower functionality of
SystemImager. A series of udp-sender daemons are run on the image server, and each client node runs a
series of udp-receiver daemons during the imaging operation. The udp-sender daemons are managed by
the startsys command. The startsys command starts these daemons when the --image_only or
--image_and_boot options are entered on the command line and then shuts these daemons down after
the imaging operation is complete. Therefore, you must use startsys when performing a full installation
through the imaging operation.
Follow this procedure to start the system and propagate the golden image to all nodes; the command-line
options depend on the number of nodes in the system:
1. Make sure the XC.lic license key file is located in the following directory:
# ls /opt/hptc/etc/license
CAUTION: You cannot continue if the license key file is not present in this directory. See “Task 7:
Have the License Key File Ready” (page 25) and “Put the License Key File in the Correct Location
80 Configuring and Imaging the System