HP XC System Software Installation Guide Version 3.2

Table 3-5 lists the user and group account IDs that are configured by default on an HP XC system
if they are not already in use. If any of the default user and group identifiers conflict with other
accounts or are not suitable for your environment, you can override them by creating the user
accounts manually now (before running the cluster_config utility).
Table 3-5 HP XC Default User and Group Account IDs
GIDGroup NameUIDUser Name
222hpasm222nagios
232qsnet232qsnet
500slurm500slurm
501lsfadmin501lsfadmin
79hpsmh79hpsmh
3.7.13 Customize Client Node Disk Partitioning
This task is optional. Perform this task only if you want to change the default partition layout
on client nodes.
The HP XC client node imaging process requires a single system disk on each client node for the
operating system installation. Client node disk devices are partitioned automatically as part of
the automated client imaging process.
Table 3-6 lists the default disk partition layout on client nodes. Partition sizes are created as a
percentage of available disk space after subtracting the total swap size.
Table 3-6 Default Client Node Partition Layout
SizeFile System Name
Swap space is calculated based on the amount of memory on the node, and
it is governed by minimum and maximum values you set (see Appendix E
(page 199) for more information).
By default, swap space is calculated as 100% x (total memory).
One swap partition
300 MB
/boot or /boot/efi
60% x (total disk size minus space for swap and /boot partition)/ (root)
40% x (total disk size minus space for swap and /boot partition)/var
If the default client node disk partition layout is satisfactory for your needs, you do not have to
do anything.
However, if the client nodes require a different partitioning scheme, you have the flexibility to
apply customized, fixed partition sizes or to assign partition sizes based on a percentage of the
disk size to all or a subset of client nodes.
See Appendix E (page 199) for instructions.
3.7.14 Create the HP Modular Cooling System Configuration File
This task is optional. Perform this task only if the hardware configuration includes a water-based
HP Modular Cooling System (MCS) device.
Follow this procedure to create and populate an MCS configuration file called mcs.ini. The
discover command uses the information in this file to discover the MCS devices.
1. Begin this procedure as the root user on the head node.
2. Change to the following directory:
# cd /opt/hptc/mcs/config
3.7 Task 6: Set Up the System Environment 83