Planning and Configuring HP DCE 1.7

7-14 Planning and Configuring HP DCE 1.7
Notes on Cell Administration
Miscellaneous Notes
Miscellaneous Notes
This section contains miscellaneous information about HP DCE/9000 cell
administration.
• To better integrate HP DCE with existing HP-UX systems, HP has
added new functionality to the passwd_export utility. Before
exporting groups from the DCE registry to the /etc/group file, HP
passwd_export looks for the file /etc/ opt/dce/sys.group and
prepends any group information from that file to the new /etc/group
file. This allows an administrator to effectively override group
information from the network registry on the local system. Because
existing HP-UX groups conflict with the groups defined by the DCE
architecture, HP has supplied a template file,
/etc/opt/dce/sys.group, that is installed on every HP-UX system
when DCE is configured. This ensures that the /etc/group file
created by passwd_export will have the correct group IDs for the
groups that HP-UX software relies on. For example, bin::2 will be
prepended to the new group file from the template file before bin::3 is
exported from the DCE registry to the group file. Existing HP-UX
utilities that expect bin to be group ID 2, will then find the correct
entry first in the /etc/group file.
• DCE utilities and applications open /dev/lan0 (or, depending on the
configuration of the local host’s network interfaces, another /dev/lan*
file) in order to obtain the local host’s IEEE 802 address. This address
is used to generate UUIDs. HP’s DCE configuration tools ensure that
/dev/lan* is world-readable. However, if you update the filesets
UX-CORE or LAN after installing and configuring HP DCE, you
should verify that /dev/lan* is readable by world.