HP XC System Software Installation Guide Version 3.0

Create Local User Accounts (Optional)
If you intend to create local user accounts on your HP XC system rather than manage user accounts through
another user authentication method (such as NIS or LDAP), use the Linux adduser command to create local
user accounts on the system now, before the system is configured.
See the HP XC System Software Administration Guide if you need more information about creating local
user accounts.
Special Considerations for Nagios and LSF
During the system configuration phase, the cluster_config command attempts to create a nagios and
an lsfadmin account for use by Nagios and LSF, respectively.
To use existing nagios and lsfadmin user accounts from a site wide NIS system (or some other external
user authentication system), you must manually create local XC accounts that mirror the site wide accounts
(with matching user identification (UID) and group identification (GID) values). In that way, the
cluster_config command uses these local accounts to properly configure Nagios and LSF with the right
file permissions, access, and so on.
Override Default User and Group Account IDs (Optional)
Table 4-3 lists the user and group account IDs that are configured by default on an HP XC system. If any
of these 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 4-3 HP XC User and Group Accounts
GIDGroup NameUIDUser Name
222hpasm222nagios
232qsnet232qsnet
500slurm500slurm
501lsfadmin501lsfadmin
Customize Client Node Disk Partitioning (Optional)
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 4-4 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 4-4 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 set by you
By default, swap space is calculated as 100% x (total memory)
One swap partition
1% x (total disk size minus swap space)/boot or /boot/efi
60% x (total disk size minus swap space)/ (root)
39% x (total disk size minus swap space)/var
If the default partition layout is satisfactory for your needs, you do not have to do anything regarding client
node disk partitioning.
However, if your system requires a different, customized partitioning layout on client disk devices, see
Appendix E (page 111) for instructions.
50 Configuring and Imaging the System