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dmu(8)									dmu(8)

       dmu - Dataless management utility


       The  dataless management utility (dmu) manages Dataless Management Ser‐
       vices (DMS) environments and clients, letting you  install,  configure,
       and  list  DMS  environments,  and  add,	 list,	modify,	 or remove DMS
       clients. DMS maintains root (/), /usr, and /var file systems on	a  DMS
       server  for  DMS	 clients.  All swapping and dumping is done on the DMS
       client's local disk.

       The dmu utility creates a root file system based on the	software  sub‐
       sets  installed	in  the DMS environment area on the server.  This root
       file system is accessed by DMS clients over a Local Area Network (LAN).
       DMS  lets  system administrators customize the root file systems before
       it is accessed by DMS clients.


       DMS is not supported in a clusters environment. A cluster member cannot
       be a DMS server or a dataless client.

   Dataless Management Services
       The  DMS	 server	 maintains a separate copy of the root file system for
       each DMS client in a client root directory (usually  /clients)  in  the
       DMS  area. Each DMS root area is customized for the DMS client to allow
       for different environmental requirements.

       The DMS server also reserves a DMS area where copies of the  /usr  file
       system reside. The /usr file system is shared by DMS clients with read-
       only access.

       The server's DMS root and /usr  areas  are  available  to  DMS  clients
       through a network file system (NFS), with each client accessing the DMS
       disk area on the DMS server over a LAN. Each DMS client is booted  over
       the  network from its private root area on the DMS server. Once booted,
       the DMS client continues to use its root files and /usr files from  the
       server's DMS area.

   DMS Environments
       One  or	more DMS environments can reside in a DMS area. Each DMS envi‐
       ronment contains one or more root areas; a root area  exists  for  each
       general	type  of DMS client supported. DMS client root areas reside in
       the /var/adm/dms directory, and are named /var/adm/dms/dmsN.arch, where
       N is a sequentially-assigned integer starting with 0 and arch is a name
       identifying the client's machine architecture, such as alpha. The first
       DMS area for Alpha clients would be named /var/adm/dms/dms0.alpha.

   DMS Client Areas
       DMS  maintains  a DMS client area in the /clients directory.  Each root
       area for an individual DMS client  is  tailored	from  the  appropriate
       generic	root  file system, and contains a customized kernel to support
       that DMS client's actual system configuration.

       Each DMS client views its private root area and the shared /usr area as
       local  although	these  areas actually reside on the DMS server and are
       accessed through NFS. As with the /var/adm/dms  area,  multiple	client
       areas can be established in different partitions.

   DMS Software Installation
       Use  the dmu utility's Install Software option to install software into
       each  /var/adm/dms/dmsN.arch  file  system.   All  software   must   be
       installed  and configured in the DMS server area before DMS clients can
       be added to the DMS environment.

   DMS Client Registration
       Before you use the dmu utility to serve a DMS client, you must register
       the  DMS	 client	 for a DMS area or make an entry for the DMS client in
       the /etc/hosts file on the DMS server.  You  must  have	the  following
       information  to	register  a  DMS  client: The client's host name.  The
       /var/adm/dms/dmsN.arch DMS environment where the	 DMS  client  will  be
       registered.   The location of the DMS client's root directory. The path
       must not exceed 25 characters and be located under the /clients	direc‐
       tory.   The  DMS	 client's  network interface, subnet mask, and default
       route for this network interface.  The DMS  client's  hardware  network
       address.	  The  gateway address between the DMS client and server.  The
       swap device and partition and swap device type.	 The  type  of	kernel
       build support to be provided for the DMS client.

       You  must log in as root or have superuser privileges to invoke the dmu

       Tru64 UNIX DMS servers do not  support  dataless	 environments  on  DMS
       clients that do not support the BOOTP Internet Boot Protocol.

       DMS is not supported in a clusters environment. A cluster member cannot
       be a DMS server or a dataless client.

       The following command invokes the dmu  utility  from  the  root	system
       prompt on the DMS server: # /usr/sbin/dmu

       You  see	 the DMU Main Menu, and you can select dmu functions.  *** DMU
       Main Menu ***

       Choices without key letters are not available.

	   a) ADD a client
	   c) CONFIGURE software environments
	   d) DELETE software environments
	   i) INSTALL software environments
	   l) LIST registered clients
	   m) MODIFY a client
	   r) REMOVE a client
	   s) SHOW software environments
	   x) EXIT

       Enter your choice:

       Available menu options depend upon previous actions. For	 example,  you
       cannot  list,  modify,  or remove clients until you have added at least
       one DMS client. In that case, the m, l, and r key letters are not shown
       in front of their respective options: a) ADD a client
	   c) CONFIGURE software environments
	   d) DELETE software environments
	   i) INSTALL software environments
	    ) LIST registered clients
	    ) MODIFY a client
	    ) REMOVE a client
	   s) SHOW software environments
	   x) EXIT

       Base  directory	for  Dataless  Management Services Default location of
       client's root directory DMS client database file

       Commands: bindconfig(8), doconfig(8), nissetup(8), pmerge(8), setld(8)

       Files: bootptab(4)

       Sharing Software on a Local Area Network

       Installation Guide

       Installation Guide -- Advanced Topics


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