nisfiles man page on Solaris

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nisfiles(4)			 File Formats			   nisfiles(4)

NAME
       nisfiles - NIS+ database files and directory structure

SYNOPSIS
       /var/nis

DESCRIPTION
       The Network Information Service Plus (NIS+) uses a memory based, repli‐
       cated database. This database uses a  set  of  files  in	 the  /var/nis
       directory  for  checkpointing  to  table	 storage and for maintaining a
       transaction log. Additionally, the NIS+ server and client use files  in
       this directory to store binding and state information.

       The  NIS+ service implements an authentication and authorization system
       that is built upon Secure RPC. In this implementation, the service uses
       a  table named cred.org_dir.domain-name to store the public and private
       keys of principals that are authorized to access the NIS+ namespace. It
       stores group access information in the subdomain groups_dir.domain-name
       as group objects. These two tables appear as files in the /var/nis/data
       directory on the NIS+ server.

       Unlike  the  previous  versions	of the network information service, in
       NIS+, the information in the tables is initially loaded into  the  ser‐
       vice  from  the	ASCII  files on the server and then updated using NIS+
       utilities. See nistbladm(1). Some sites may wish to periodically regen‐
       erate  the  ASCII  files	 for  archival	purposes. To do this, a script
       should be added in the crontab(1) of the server that lists these tables
       and creates the	ASCII file from the result.

       Note that except for the NIS_COLDSTART and NIS_SHARED_DIRCACHE file, no
       other files should be manipulated by commands such as cp(1),  mv(1)  or
       rm(1).  The  transaction	 log  file keeps logs of all changes made, and
       hence the files cannot be manipulated independently.

       The files described below are stored in the /var/nis directory:

       NIS_COLDSTART	       Contains NIS+ directory objects that are to  be
			       preloaded  into the NIS+ cache at startup time.
			       This file is usually created at NIS+  installa‐
			       tion time. See nisinit(1M) or nisclient(1M).

       NIS_SHARED_DIRCACHE     Contains	 the  current  cache  of NIS+ bindings
			       being maintained by the cache manager. The con‐
			       tents can be viewed with nisshowcache(1M).

       client_info	       Contains	 configuration	information, for exam‐
			       ple, preferred servers, options, and the	 like,
			       for nis_cachemgr(1M) and potentially other NIS+
			       clients on the system. It is manipulated by the
			       nisprefadm(1M) command.

       .pref_servers	       A  cached copy of preferred server information.
			       It is maintained by nis_cachemgr. Do  not  edit
			       this file manually.

       trans.log	       Contains	 a  transaction log that is maintained
			       by the NIS+ service. It can be viewed using the
			       nislog(1M)  command.  This file contains holes.
			       Its apparent size may be a lot higher than  its
			       actual  size. There is only one transaction log
			       per server.

       data.dict	       A dictionary that is used by the NIS+  database
			       to  locate  its	files.	It  is	created by the
			       default NIS+ database package.

       data.dict.log	       The log file for the database dictionary.  When
			       the  server  is checkpointed, this file will be
			       deleted. See the discussion of the -C option of
			       nisping(1M).

       data		       Contains databases that the server uses.

       data/root.object	       On root servers, this file contains a directory
			       object that describes  the  root	 of  the  name
			       space.

       data/parent.object      On root servers, this file contains a directory
			       object that  describes  the  parent  namespace.
			       This  file  is  created by the nisinit(1M) com‐
			       mand.

       data/table_name	       For each table in the directory there is a file
			       with  the same name that stores the information
			       about that table. If there  are	subdirectories
			       within this directory, the database for the ta‐
			       ble is stored in the file, table_name.subdirec‐
			       tory.

       data/table_name.log     Contains	 the  database	log  for the table ta‐
			       ble_name. The log file maintains the  state  of
			       individual  transactions to each database. When
			       a database has been checkpointed, that is,  all
			       changes	have  been made to the data/table_name
			       stable storage, this log file will be deleted.

			       Currently,  NIS+	 does  not  automatically   do
			       checkpointing.  The  system  administrator  may
			       want to do nisping-C  operations	 periodically,
			       perhaps once a day, to checkpoint the log file.
			       This can be done either through a cron(1M) job,
			       or manually.

       data/root_dir	       On  root servers, this file stores the database
			       associated with the root directory. It is simi‐
			       lar to other table databases. The corresponding
			       log file is called root_dir.log.

       data/cred.org_dir       Table containing the credentials of  principals
			       in this NIS+ domain.

       data/groups_dir	       Table   containing   the	  group	 authorization
			       objects	needed	by  NIS+  to  authorize	 group
			       access.

       data/serving_list       Contains	 a  list  of all NIS+ directories that
			       are being served by the	NIS+  server  on  this
			       server.	When  this  server is added or deleted
			       from any NIS+ directory object,	this  file  is
			       updated by the server.

SEE ALSO
       cp(1),  crontab(1),  mv(1),  nis(1),  nis_cachemgr(1M), niscat(1), nis‐
       match(1), nistbladm(1), rm(1),  cron(1M),  nisclient(1M),  nisinit(1M),
       nislog(1M),	nisping(1M),	 nisprefadm(1M),     nisshowcache(1M),
       nis_objects(3NSL)

NOTES
       NIS+ might not be supported in future releases of the Solaris Operating
       system.	Tools  to aid the migration from NIS+ to LDAP are available in
       the   current   Solaris	 release.   For	  more	 information,	 visit
       http://www.sun.com/directory/nisplus/transition.html.

SunOS 5.10			  18 Dec 2001			   nisfiles(4)
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