DOMAINNAME(8) Maintenance Commands and Procedures DOMAINNAME(8)
NAME
domainname - set or display name of the current domain
SYNOPSIS
domainname [
name-of-domain]
DESCRIPTION
Without an argument,
domainname displays the name of the current domain
name used in RPC exchanges, usually referred to as the NIS domain name.
This name typically encompasses a group of
hosts or
passwd entries under
the same administration. The
domainname command is used by various
components of Solaris to resolve names for entries such as are found in
passwd,
hosts and
aliases. By default, naming services such as
NIS use
domainname to resolve names.
With appropriate privileges (root or an equivalent role [see
rbac(7)]),
you can set the name of the domain by specifying the name as an argument
to the
domainname command.
The domain name for various naming services can also be set by other
means. For example,
ypinit can be used to specify a different domain for
all
NIS calls. The domain name of the machine is usually set during boot
time through the
domainname command by the
svc:/system/identity:domain service. If the new domain name is not saved in the
/etc/defaultdomain file, the machine reverts to the old domain after it reboots.
The
sendmail(8) daemon, as shipped with Solaris, and the
sendmail implementation provided by
sendmail.org (formerly referred to as
"Berkeley 8.x sendmail") both attempt to determine a local host's fully
qualified host name at startup and both pursue follow-up actions if the
initial search fails. It is in these follow-up actions that the two
implementations differ.
Both implementations use a standard Solaris or Unix system call to
determine its fully qualified host name at startup, following the name
service priorities specified in
nsswitch.conf(5). To this point, the
Solaris and
sendmail.org versions behave identically.
If the request for a fully qualified host name fails, the
sendmail.org sendmail sleeps for 60 seconds, tries again, and, upon continuing
failure, resorts to a short name. The Solaris version of
sendmail makes
the same initial request, but then, following initial failure, calls
domainname. If successful, the sleep is avoided.
On a Solaris machine, if you run the
sendmail.org version of sendmail,
you get the startup behavior (omitting the
domainname call) described
above. If you run the Solaris
sendmail, the
domainname call is made if
needed.
If the Solaris
sendmail cannot determine the fully qualified host name,
use
check-hostname(8) as a troubleshooting aid. This script can offer
guidance as to appropriate corrective action.
FILES
/etc/defaultdomain /etc/nsswitch.confSEE ALSO
svcs(1),
aliases(5),
defaultdomain(5),
hosts(5),
nsswitch.conf(5),
passwd(5),
attributes(7),
rbac(7),
smf(7),
check-hostname(8),
hostconfig(8),
named(8),
sendmail(8),
svcadm(8),
ypinit(8)NOTES
The
domainname service is managed by the service management facility,
smf(7), under the service identifier:
svc:/system/identity:domain
Administrative actions on this service, such as enabling, disabling, or
requesting restart, can be performed using
svcadm(8). The service's
status can be queried using the
svcs(1) command.
May 13, 2017
DOMAINNAME(8)