Manual Pages for UNIX Operating System command usage for man ypfiles

File Formats                                           ypfiles(4)



NAME
     ypfiles - Network Information Service  Version  2,  formerly
     knows as YP

DESCRIPTION
     The NIS network  information  service  uses  a  distributed,
     replicated  database  of dbm files , in ASCII form, that are
     contained in the /var/yp directory  hierarchy  on  each  NIS
     server.


     A dbm database served by the NIS server is called a NIS map.
     An  NIS  domain is a subdirectory of /var/yp that contains a
     set of NIS maps on each NIS server.


     Standard    nicknames    are    defined    in    the    file
     /var/yp/nicknames.  These  names can be used in place of the
     full map name in the ypmatch and  ypcat  commands.  Use  the
     command  ypwhich -x to display the current set of nicknames.
     Use the command ypwhich -m  to  display  all  the  available
     maps.  Each  line  of  the nickname file contains two fields
     separated by white space. The first field is  the  nickname,
     and  the second field is the name of the map that it expands
     to. The nickname cannot contain a ".".

  NIS to LDAP (N2L)
     If the /var/yp/NISLDAPmapping configuration file is present,
     the  NIS  server operates in NIS to LDAP (N2L) mode. In this
     mode, NIS maps are  stored  in  a  new  set  of  DBM  files,
     prepended by the LDAP_ prefix, at /var/yp/domainename. These
     files are used as a cache backed by information from an LDAP
     server.  Additional DBM files are created in the same direc-
     tory to hold the cache's TTL values.


     N2L mode enables NIS clients to  be  supported  in  an  LDAP
     environment.


     In N2L mode, the old style DBM files, NIS source files,  and
     the  ypmake(1M)  utility  have to role. They are retained to
     enable easy conversion back  to  the  traditional  mode,  if
     required.

  Converting from N2L to Traditional NIS
     When NIS is operating in N2L mode, it uses a new set of  NIS
     maps with an LDAP_ prefix, based on the contents of the LDAP
     DIT. The NIS source files are unused and become out of date.
     If you wish to convert back to the traditional NIS mode, the
     N2L configuration file should be deleted.  The  system  will
     then return to using the standard map files. Optionally, the



SunOS 5.11          Last change: 10 Dec 2009                    1






File Formats                                           ypfiles(4)



     N2L mode map files, /var/yp/*/LDAP_* can also be deleted.


     If you want to run  the  system  in  traditional  mode  with
     information based on the DIT, then the NIS source files must
     be regenerated based on the N2L maps. To regenerate the  NIS
     source files based on the N2L maps, run ypmap2src(1M).

FILES
     /var/yp

         Directory containing NIS configuration files.


     /var/yp/binding

         Stores the information required to bind the  NIS  client
         to the NIS server.


     /var/yp/binding/ypdomain/ypservers

         Contains the servers to which the NIS client is  allowed
         to bind.


     /var/yp/Makefile

         Builds the NIS ndbm databases.


     /var/yp/nicknames

         Nicknames file.


     /var/yp/securenets

         Defines the hosts and networks that are  granted  access
         to  information  in the served domain. This file is read
         at startup time by ypserv and ypxfrd.


     /var/yp/ypdomain

         Directory containing ndbm databases.


     /var/yp/NISLDAPmapping

         NIS to LDAP configuration file




SunOS 5.11          Last change: 10 Dec 2009                    2






File Formats                                           ypfiles(4)



     /var/yp/*/LDAP_*

         NIS to LDAP mode map files


SEE ALSO
     ldap(1), makedbm(1M),  ypbind(1M),  ypinit(1M),  ypmake(1M),
     ypmap2src(1M),     ypserv(1M),     ypxfrd(1M),     ndbm(3C),
     ypclnt(3NSL)














































SunOS 5.11          Last change: 10 Dec 2009                    3