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Files Reference
Contains a list of directories
that can be exported to Network File System (NFS) clients.
The /etc/exports file
contains an entry for each directory that can be exported to NFS
clients. This file is read automatically by the exportfs
command. If you change this file, you must run the exportfs
command before the changes can affect the way the daemon operates.
Only when this file is present
during system startup does the rc.nfs script execute the
exportfs command and start the nfsd and
mountd daemons.
Note: You
cannot export either a parent directory or a subdirectory of an exported
directory within the same file system.
Entries in the file are formatted
as follows:
Directory
-Option [ , Option ] ...
These entries are defined as
follows:
Directory
| Specifies the directory name.
|
Option
| Specifies optional characteristics for the directory being
exported. You can enter more than one variable by separating them with
commas. Choose from the following options:
- ro
- Exports the directory with read-only permission. Otherwise, if not
specified, the directory is exported with read-write permission.
- rw =
Client [:Client]
-
-
- Exports the directory with read-write permission to the machines specified
by the Client parameter and read-only to all others. The
Client parameter can be either the host name or the network
name. If a rw host name is not specified, the directory is
exported with read-write permission to all.
- access =
Client[:Client,...]
-
-
- Gives mount access to each client listed. A client can be either a
host name or a netgroup name. Each client in the list is first checked
in the /etc/netgroup database and then in the /etc/hosts
database. The default value allows any machine to mount the given
directory.
- anon=
UID
- If a request comes from a root user, use the user identification
(UID) value as the effective user ID.
The default value for this option
is -2. Setting the value of the anon option to -1 disables
anonymous access. Note that, by default, secure NFS accepts nonsecure
requests as anonymous, and users who want more security can disable this
feature by setting anon to a value of -1.
- root =
HostName[:HostName,...]
-
-
- Gives root access only to the root users from the specified
HostName. The default is for no hosts to be granted root
access.
- secure
- Requires clients to use a more secure protocol when accessing the
directory.
A # (pound sign) anywhere in the
file indicates a comment that extends to the end of the line.
|
- To export to
netgroup clients, enter:
/usr -access=clients
- To export to the world,
enter:
/usr/local
- To export to only these
systems, enter:
/usr2 -access=hermes:zip:tutorial
- To give root access only to
these systems, enter:
/usr/tps -root=hermes:zip
- To convert client root users
to guest UID=100, enter:
/usr/new -anon=100
- To export read-only to
everyone, enter:
/usr/bin -ro
- To allow several options on
one line, enter:
/usr/stuff -access=zip,anon=-3,ro
This file is part of NFS in Network Support Facilities in Base Operating
System (BOS) Runtime.
/etc/xtab
| Lists currently exported directories.
|
/etc/hosts
| Contains an entry for each host on the network.
|
/etc/netgroup
| Contains information about each user group on the network.
|
The exportfs command.
The nfsd daemon.
List of NFS Files.
NFS Services
in AIX 5L Version 5.1 System Management Guide:
Communications and Networks.
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