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bootparams(4)                    File Formats                    bootparams(4)

       bootparams - boot parameter data base


       The  bootparams  file  contains  a list of client entries that diskless
       clients use for booting. Diskless booting clients retrieve this  infor-
       mation  by  issuing requests to a server running the rpc.bootparamd(1M)
       program. The bootparams file may be used  in  conjunction  with  or  in
       place  of  other  sources  for  the  bootparams  information.  See nss-

       For each client the file contains an entry with the client's name and a
       list of boot parameter values for that client. Each entry has the form:

       clientname    keyword=value...

       The  first  item of each entry is the host name of the diskless client.
       You can use the asterisk ('*') character as a "wildcard"  in  place  of
       the  client  name  in  a  single entry. A wildcard entry applies to all
       clients for which there is not an entry that specifically names them.

       In a given entry, the host name or asterisk is followed by one or  more
       whitespace characters and a series of keyword--value pairs separated by
       whitespace characters. There must not be any whitespace within  a  key-
       word--value pair.

       Each keyword--value pair has the syntax:


       The preceding form breaks out further as:


       Where server can be null and value can be a pathname.

       An example that includes a server is:

       client1 root=server1:/export/client1/root

       An example where server is null is:

       client1 rootopts=:vers2

       A  minor  variation  of the keyword=value syntax is used for the domain
       keyword. Unlike the forms shown above,  this  syntax  does  not  use  a
       colon. For example:

       client1 domain=bldg1.workco.com

       Entries  can  span multiple lines. Use the backslash ('\') character as
       the last character of a line to continue the  entry  to  the  following
       line.  For  multiple-line  entries, you can split a line only in places
       where whitespace is allowed. For example, you can use  a  backslash  to
       split  the  following  entry between the end of the path (root) and the
       keyword domain:

       client1 root=server1:/export/client1/root domain=bldg1.workco.com

       In entries that specify a server, server is the name of the server that
       will provide the file or filesystem to the diskless client and value is
       the pathname of the exported file or filesystem on that server.

       In entries that use the domain keyword, the domain name specified  must
       be  the  client's domain name. The algorithm for determining a client's
       domain name is to first check for a domain keyword in  the  client-spe-
       cific  entry  and  then  in  "wildcard"  entry.  If  none is found, the
       server's domain name is used.

       For the JumpStart installation of machines that do not have video  dis-
       plays,  use  the term keyword to identify the terminal type of the boot
       server. Terminal types are listed in /usr/share/lib/terminfo (see  ter-

       An  entry with the ns keyword associates a server (a name server) with,
       instead of a pathname, a specific name service  (NIS+,  NIS,  LDAP,  or
       none)  and, if that server is not on a local subnet, the netmask needed
       to reach it. For example:


       An ns entry forces sysidtool(1M) to use the specified name service.  By
       default,  sysidtool  uses  NIS+  in preference to NIS or LDAP if it can
       find an NIS+ server for the system's domain on the subnet. An ns  entry
       might  be  necessary  if you are trying to set up a hands-off installa-
       tion, or if the name server is on a different subnet, which  is  common
       with NIS+.

       If  an  ns  keyword is not used, sysidtool uses broadcast to attempt to
       bind to either a NIS+, NIS, or LDAP server. If a name server is not  on
       the  local  subnet,  which  is possible for NIS+ or LDAP, the bind will
       fail, automatic configuration of the name service  will  fail,  and  an
       interactive screen is displayed, prompting the user to specify the name

       The ns keyword can be set in add_install_client or by Host Manager.

       Example 1: Sample bootparams Entry

       Here is an example of an entry in the bootparams file:

            client1 root=server1:/export/client1/root rootopts=:vers=2 \
            client2 root=server2:/export/client2/root ns=:nis
            client3 root=server2:/export/client3/root ns=watson:
            client4 root=server2:/export/client4/root \

       Example 2: Sample Entry for JumpStart

       The following is an example of an entry that  might  be  used  for  the
       JumpStart installation of diskless clients that do not have displays.

       mozart root=haydn:/export/install/sparc/os/latest/Solaris_9/boot \
       install=haydn:/export/install/sparc/os/8.1/latest boottype=:in \
       install_config=haydn:/usr/local/share/lib/jump-net \
       ns=otis:nisplus( term=:xterms domain=eu.cte.work.com


       rpc.bootparamd(1M), sysidtool(1M), nsswitch.conf(4)

       Solaris  diskless clients use the keywords root and rootopts to look up
       the pathname for the root filesystem and the mount options for the root
       filesystem,  respectively.  These  are the only keywords meaningful for
       diskless booting clients. See mount_ufs(1M).

SunOS 5.10                        22 Jul 2004                    bootparams(4)