System Administration Commands domainname(1M)
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 or NIS] domain name. This name typically
encompasses a group of hosts or passwd entries under the
same administration. The domainname command is used by vari-
ous components of Solaris to resolve names for entries such
as are found in passwd, hosts and aliases. By default, nam-
ing services such as NIS and NIS] use domainname to resolve
names.
With appropriate privileges (root or an equivalent role [see
rbac(5)]), 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 domain-
name 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(1M) 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(4). 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,
SunOS 5.11 Last change: 8 Mar 2006 1
System Administration Commands domainname(1M)
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 domain-
name 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(1M) as a troubleshooting aid.
This script can offer guidance as to appropriate corrective
action.
FILES
/etc/defaultdomain
/etc/nsswitch.conf
ATRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
ATRIBUTE TYPE ATRIBUTE VALUE
Availability SUNWcsu
SEE ALSO
NIS](1), nischown(1), nispasswd(1), svcs(1), check-
hostname(1M), hostconfig(1M), named(1M), nisaddcred(1M),
sendmail(1M), svcadm(1M), ypinit(1M), sys-unconfig(1M),
aliases(4), defaultdomain(4), hosts(4), nsswitch.conf(4),
passwd(4), attributes(5), rbac(5), smf(5)
NOTES
The domainname service is managed by the service management
facility, smf(5), under the service identifier:
svc:/system/identity:domain
SunOS 5.11 Last change: 8 Mar 2006 2
System Administration Commands domainname(1M)
Administrative actions on this service, such as enabling,
disabling, or requesting restart, can be performed using
svcadm(1M). The service's status can be queried using the
svcs(1) command.
SunOS 5.11 Last change: 8 Mar 2006 3
|
