| Infodoc ID |
|
Synopsis |
|
Date |
| 14223 |
|
Files needed for NIS
(YP) |
|
21 Sep 1996 |
Files in /var/yp and Other nis Files
On a NIS client, the following files exist:
/etc/nsswitch.conf for solaris
/etc/defaultdomain
/var/yp>ls -l
total 6
-rw-r--r-- 1 root root 214 Feb 7 1996 aliases
drwxr-xr-x 3 bin bin 512 Sep 4 10:43 binding
-rw-r--r-- 1 bin bin 180 Feb 3 1995 nicknames
/yar/yp/nicknames stores the nicknames for maps. When you do a ypcat passwd,
the nicknames file tells it to do a ypcat passwd.byname.
/var/yp/aliases contains full-length and truncated domain and map names
accessed by YP commands. There should not be any reason to edit this file.
The /var/yp/binding directory contains a bunch of ascii files starting with
xprt. ypbind.pid, which contains the pid of the current or last run ypbind
process.
/var/yp/binding/`domainname` contains a data file called cache_binding and
on Solaris 2.x it can contain an ascii file called ypservers. ypservers is
what is created when you specify servers to bind to with ypinit -c. The
ypservers file contains a list of NIS servers, one per line, that the ypbind
process will contact, in turn, until it successfully manages to get a
binding.
- On a NIS server itself, this file should normally contain just the
name of that machine.
- On a NIS client it should contain a list of all the
NIS servers.
If the ypservers file does not exist, the ypbind process will
be started with the "-broadcast" option, which means it will send a
broadcast packet to the local subnet to try and locate a NIS server. This
file can be modified when you want to bind to a different specific server at
boot.
On a NIS server, the following files exist in addition to the above:
# ls -l
total 150
-r-xr-xr-x 1 bin bin 13313 Jul 5 13:14 Makefile
-rw-r--r-- 1 root other 376 Aug 14 14:40 aliases
-rw-r--r-- 1 root other 0 Jul 12 13:25 aliases.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 auto.home.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 auto.master.time
drwxr-xr-x 4 root other 512 Aug 17 12:35 binding
drwxr-xr-x 2 root other 1536 Jul 12 13:17 mydomain.com
-rw-r--r-- 1 root other 0 Jul 12 13:25 group.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 hosts.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 netgroup.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 netid.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 netmasks.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 networks.time
-rw-r--r-- 1 bin bin 208 Apr 25 11:02 nicknames
-rw-r--r-- 1 root other 0 Jul 12 13:25 passwd.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 protocols.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 publickey.time
drwxr-xr-x 2 root other 512 Jun 6 12:09 pwdir
-rw-r--r-- 1 root other 0 Jul 12 13:25 rpc.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 services.time
-rw-r--r-- 1 root other 0 Jul 12 13:25 timezone.time
Makefile the script needed to create and modify maps. Always make a backup
copy before modifying it. On SunOS 4.x machines the template file exists
in /usr/lib/NIS.Makefile.
All the *.time files are 0 length and serve only as a timestamp. If you
need to remake a map simply remove the appropriate *.time file and run make.
The `domainname` directory contains the actual maps.
# ls
auto.home.dir netmasks.byaddr.pag
auto.home.pag networks.byaddr.dir
auto.master.dir networks.byaddr.pag
auto.master.pag networks.byname.dir
group.bygid.dir networks.byname.pag
group.bygid.pag passwd.byname.dir
group.byname.dir passwd.byname.pag
group.byname.pag passwd.byuid.dir
hosts.byaddr.dir passwd.byuid.pag
hosts.byaddr.pag protocols.byname.dir
hosts.byname.dir protocols.byname.pag
hosts.byname.pag protocols.bynumber.dir
mail.aliases.dir protocols.bynumber.pag
mail.aliases.pag publickey.byname.dir
mail.byaddr.dir publickey.byname.pag
mail.byaddr.pag rpc.bynumber.dir
netgroup.byhost.dir rpc.bynumber.pag
netgroup.byhost.pag services.byname.dir
netgroup.byuser.dir services.byname.pag
netgroup.byuser.pag services.byservicename.dir
netgroup.dir services.byservicename.pag
netgroup.pag timezone.byname.dir
netid.byname.dir timezone.byname.pag
netid.byname.pag ypservers.dir
netmasks.byaddr.dir ypservers.pag
Most of these maps have a many to one relationship to a file in /etc. The
passwd maps passwd.byname and passwd.byuid are the exception they contain 2
files /etc/passwd and /etc/shadow. The ypservers map do not have a file
equivalent.
Often we refer to the maps simply as files put in a database, but that is not
entirely true. NIS maps are constructed from DBM database files. DBM is
the database system build into SunOS 4.x and is supplied with NSKIT on
Solaris 2.x. A database is a set of keys and values with the ability to do
fast lookups. The flat /etc/files require a linear lookup while the database
files can be searched faster by a specific key. The NIS maps are comprised
of two files: *.dir which is a hash-table accessed bitmap of indexes and
*.pag a data file. Data files contain records in hashed order and can have
holes in them. They are stored in a sparse format, consequently copying
them with ordinary unix commands can result in expanding the holes into
zero-filled disk blocks consuming more disk space. Therefore,
use the unix cp command only as a last resort.
If /var/yp/securenets exists on SunOS 4.1.3_u1 or 4.1.4, who can retrieve
your NIS maps is restricted. The contents of this file shouldbe a number of
lines which each read:
netmask address
For example, if you want only the machines 150.101.16.28 and
129.45.16.29 to be able to retrieve your NIS maps, enter the
two lines:
255.255.0.0 150.101.16.28
255.255.0.0 150.101.16.29
If /var/yp/ypserv.log exists when ypserv is started, errors and warnings
will be written to this file.
The NIS commands
Solaris:
/usr/sbin/ypalias
/usr/sbin/ypinit
/usr/sbin/yppoll
/usr/sbin/ypset
/usr/lib/netsvc/yp/mkalias
/usr/lib/netsvc/yp/multi
/usr/lib/netsvc/yp/multi.awk
/usr/lib/netsvc/yp/rpc.yppasswdd
/usr/lib/netsvc/yp/stdethers
/usr/lib/netsvc/yp/stdhosts
/usr/lib/netsvc/yp/udpublickey
/usr/lib/netsvc/yp/ypbind
/usr/lib/netsvc/yp/yppush
/usr/lib/netsvc/yp/ypserv
/usr/lib/netsvc/yp/ypxfr
/usr/lib/netsvc/yp/ypxfr_1perday
/usr/lib/netsvc/yp/ypxfr_1perhour
/usr/lib/netsvc/yp/ypxfr_2perday
/usr/lib/netsvc/yp/ypxfrd
SunOS:
/usr/etc/ypbind
/usr/etc/ypserv
/usr/etc/ypxfrd
/usr/etc/yp/makedbm
/usr/etc/yp/mkalias
/usr/etc/yp/mknetid
/usr/etc/yp/revnetgroup
/usr/etc/yp/stdethers
/usr/etc/yp/stdhosts
/usr/etc/yp/udpublickey
/usr/etc/yp/ypinit
/usr/etc/yp/yppoll
/usr/etc/yp/yppush
/usr/etc/yp/ypset
/usr/etc/yp/ypxfr
/usr/etc/yp/ypxfr_1perday
/usr/etc/yp/ypxfr_1perhour
/usr/etc/yp/ypxfr_2perday
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