FEDFS-CREATE-JUNCTION(8)				      System Manager's Manual					  FEDFS-CREATE-JUNCTION(8)

NAME

       fedfs-create-junction - send a FEDFS_CREATE_JUNCTION ADMIN protocol request

SYNOPSIS

       fedfs-create-junction [-?d] [-n nettype] [-h hostname] [-l nsdbname] [-r nsdbport] [-s security] path fsn-uuid

INTRODUCTION

       RFC  5716  introduces the Federated File System (FedFS, for short).  FedFS is an extensible standardized mechanism by which system adminis-
       trators construct a coherent namespace across multiple file servers using file system referrals.  For further details, see fedfs(7).

       FedFS-enabled file servers allow remote administrative access via an authenticated RPC protocol known as the FedFS ADMIN  protocol.   Using
       this protocol, FedFS administrators manage FedFS junctions and NSDB connection parameter information on remote FedFS-enabled file servers.

DESCRIPTION

       The  fedfs-create-junction(8) command is part of a collection of low-level single-use programs that is intended for testing the FedFS ADMIN
       protocol or for use in scripts.	It sends a single FEDFS_CREATE_JUNCTION request to a remote FedFS ADMIN protocol service.

       The FEDFS_CREATE_JUNCTION request creates a FedFS junction in a local file system on a remote file server.  The contents of a  FedFS  junc-
       tion are an FSN UUID and an NSDB name and port.

       The  fedfs-create-junction(8)  command takes two positional parameters which specify the pathname on the remote server of the new junction,
       and the FSN UUID.  This pathname is relative to the root of the local file system on the remote server.	Required NSDB information  can	be
       inferred  from  the  command's environment or specified on the command line.  The meaning of these arguments is described in more detail in
       fedfs(7).

       The FEDFS_CREATE_JUNCTION request does not create an FSN record.  To create an FSN record, use the nsdb-create-fsn(8) command.  Resolving a
       junction that contains an FSN UUID without a matching FSN record on the NSDB results in an error on the file server.

OPTIONS

       -d, --debug
	      Enables debugging messages during operation.

       -?, --help
	      Displays fedfs-create-junction(8) version information and a usage message on stderr.

       -h, --hostname=hostname
	      Specifies the hostname of a remote FedFS ADMIN service.  If this option is not specified, the default value is localhost.

       -n, --nettype=nettype
	      Specifies the transport to use when contacting the remote FedFS ADMIN service.  Typically the nettype is one of tcp or udp.  If this
	      option is not specified, the default value is netpath.  See rpc(3t) for details.

       -l, --nsdbname=NSDB-hostname
	      Specifies the hostname of the NSDB to insert into the new FedFS junction.  If this  option  is  not  specified,  the  value  of  the
	      FEDFS_NSDB_HOST  environment  variable  is  consulted.   If  the variable is not set and the --nsdbname option is not specified, the
	      fedfs-create-junction(8) command fails.

       -r, --nsdbport=NSDB-port
	      Specifies the IP port of the NSDB to insert into the new FedFS junction.	If  this  option  is  not  specified,  the  value  of  the
	      FEDFS_NSDB_PORT environment variable is consulted.  The default value if the variable is not set is 389.

       -s, --security=flavor
	      Specifies  the security flavor to use when contacting the remote FedFS ADMIN service.  Valid flavors are sys, unix, krb5, krb5i, and
	      krb5p.  If this option is not specified, the unix flavor is used.  See the SECURITY section of this man page for details.

EXAMPLES

       Suppose you are the FedFS administrator of the example.net FedFS domain and that your domain's NSDB hostname is nsdb.example.net.  To  cre-
       ate a new FedFS junction on the file server fs.example.net, use:

	      $ fedfs-create-junction -h fs.example.net -l nsdb.example.net 	   /export/junction1 `uuidgen -t`

       In this example, a new FSN UUID is created on the spot.	It can be read back from the remote server using the fedfs-lookup-junction(8) com-
       mand, and added to the NSDB using the nsdb-create-fsn(8) command.

SECURITY

       By default, or if the sys and unix flavors are specified with the  --security=flavor  option,  the  fedfs-create-junction(8)  command  uses
       AUTH_SYS security for the Remote Procedure Call.  AUTH_SYS has known weaknesses and should be avoided on untrusted networks.

       The  RPC client uses the Kerberos v5 GSS mechanism if a Kerberos security flavor is specified.  When specifying a Kerberos security flavor,
       the user must first obtain a valid Kerberos ticket using kinit(1) before running fedfs-create-junction(8).

       The AUTH_NONE security flavor is no longer supported by this implementation.

SEE ALSO

       fedfs(7), rpc.fedfsd(8), fedfs-lookup-junction(8), nsdb-create-fsn(8), kinit(1), rpc(3t)

       RFC 5716 for FedFS requirements and overview

COLOPHON

       This page is part of the fedfs-utils package.  A description of	the  project  and  information	about  reporting  bugs	can  be  found	at
       http://wiki.linux-nfs.org/wiki/index.php/FedFsUtilsProject.

AUTHOR

       Chuck Lever <chuck.lever@oracle.com>

								  3 February 2014					  FEDFS-CREATE-JUNCTION(8)