If the /etc/nsswitch.conf file does not exist, or if the line for a particular
type of information is absent or syntactically incorrect, the following
default configuration is used.
passwd: files nis
group: files nis
hosts: dns [NOTFOUND=return] nis [NOTFOUND=return] files
networks: nis [NOTFOUND=return] files
protocols: nis [NOTFOUND=return] files
rpc: nis [NOTFOUND=return] files
publickey: nis [NOTFOUND=return] files
netgroup: nis [NOTFOUND=return] files
automount: files nis
aliases: files nis
services: nis [NOTFOUND=return] files |
If your /etc/nsswitch.conf file contains a syntactically correct line for a
particular type of information, that line is used instead of the
default.
If you specify a name service for a particular type of information,
but you do not specify four status=action pairs after the name service, the following default status=action pairs are used for any statuses you did not specify:
SUCCESS=return
NOTFOUND=continue
UNAVAIL=continue
TRYAGAIN=continue |
So, for example, in the default configuration for passwd, the local /etc/passwd file will be consulted first, and if the query
returns anything but SUCCESS, the NIS passwd map will be consulted.
The default Name Service Switch behavior on HP-UX changed
at release 10.30. The file /etc/nsswitch.hp_defaults gives the default Name Service Switch behavior
for HP-UX prior to release 10.30. If you want your host to keep
the same Name Service Switch behavior when you upgrade to release
10.30, copy /etc/nsswitch.hp_defaults to /etc/nsswitch.conf. Following is the old default Name Service Switch for
HP-UX prior to release 10.30.
passwd: compat
group: compat
hosts: dns [NOTFOUND=return] nis [NOTFOUND=return] files
networks: nis [NOTFOUND=return] files
protocols: nis [NOTFOUND=return] files
rpc: nis [NOTFOUND=return] files
publickey: nis [NOTFOUND=return] files
netgroup: nis [NOTFOUND=return] files
automount: files nis
aliases: files nis
services: nis [NOTFOUND=return] files |
This configuration uses the +/- syntax in the /etc/passwd and /etc/group files. The local /etc/passwd or /etc/group file is consulted first, and when a plus (+) or
minus (-) sign is encountered in the file, the query goes to the
NIS database.
This configuration uses BIND (DNS) for host name and IP address lookups.
NIS is consulted only if the local host is not configured to use BIND.
The local /etc/hosts file is consulted only if the local host is not configured
as a DNS or NIS client.
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