The utpreserve script stops the
dhcpd
service while upgrading Sun Ray
Software, and the service is not restarted on the Sun Ray
server after the upgrade finishes. This problem affects only
Sun Ray servers that provide DHCP services.
Workaround: Manually start the DHCP service on the Sun Ray server after the upgrade.
Reference: CR 16050120
If you use the utpreserve script to back up
and restore the Sun Ray server configuration during an upgrade
(because of an operating system upgrade), the
utwc
group is not backed up and restored.
The utsetup script requires the
utwc
group on the server to complete an
upgrade. If not available, the following error is displayed:
Invalid groupname : utwc. Please specify an existing
groupname.
Workaround: Before running
the utsetup script to upgrade a Sun Ray
server, you must create the utwc
group on
the Sun Ray server. Here is an example command for Oracle
Linux:
# groupadd utwc
Reference: CR 14763147