HP XC System Software Administration Guide Version 3.2

Reconfiguration
For a system reconfiguration, the policy in effect is to preserve any customizing you have done
to a Linux configuration file unless the change undermines the proper operation of the HP XC
System Software. In that case, the HP XC System Software overwrites the configuration file and
the changes you made are deleted.
Some configuration parameters can be expressed in terms of a range. If you make a change to
such a parameter and that change is within the operational range required by the HP XC System
Software, the change to the configuration file is preserved. If the change is not within that range,
the HP XC configuration application modifies the configuration file to adhere to the specified
range.
An example of a modification to a Linux configuration files that will not be preserved is any of
the scripts in the /etc/sysconfig/network-scripts directory. An nconfigure script
determines the device names to associate with the admin, internal, and external devices;
any customization made to the device name configuration files are overwritten.
Additions made to the Linux configuration files that are not fundamental to proper HP XC system
operation are preserved during reconfiguration.
Software Upgrade
During a software upgrade, the HP XC System Software defers to the Linux rpm software, which
has the responsibility for ensuring the preservation of any Linux configuration files you have
customized. For more information, see rpm(8).
1.5.2 Configuration Files
Configuration files comprise the configuration files for the HP XC System Software and the
configuration files for integrated third-party software
For more information on these configuration files, see “HP XC Configuration Files” (page 39).
Reconfiguration
During reconfiguration, changes you made to all HP XC configuration files are preserved if you
modified the data according to the procedures in the HP XC documentation set.
For example, if you change the syslog-ng configuration information, (perhaps, filters or ports)
you must modify both the syslog-ng.conf and the syslog-ng template files so that the
changes persist after a reconfiguration.
Software Upgrade
During a software upgrade, customizations to the HP XC configuration files are preserved but
might need to be merged back into the configuration files.
HP XC preserves configuration files using standard RPM methods. The rpm upgrade process
preserves customizations by saving a copy of the old or new configuration file with either the
.rpmsave or .rpmnew suffix. To retain your changes, you must manually merge the saved
customizations into the new configuration file as documented in the upgrade and patch
documentation.
1.5.2.1 HP XC Configuration Files
Table 1-3 lists the configuration files for a given component alphabetically. It also provides a
reference to the chapter in this document that references it.
1.5 HP XC Configuration File Guidelines 39