 |
Index for
Section 7 |
|
 |
Alphabetical
listing for N |
|
 |
Bottom of
page |
|
nfs_manual_setup(7)
NAME
nfs_manual_setup - Describes how to manually set up the Network File System
(NFS)
DESCRIPTION
This reference page describes how to manually set up the Network File
System (NFS). Setting up NFS includes configuring the following:
· Servers
· Clients, using /etc/fstab
· Clients, using Automount or AutoFS
SETTING UP SERVERS
Use the following procedure to set up an NFS server:
1. Create the /etc/exports file and add the appropriate entries to it.
The entries that you add are site-specific but their syntax should be
as follows:
pathname [-root=0] [-root=hostlist [-anon=uid] [-rw=hostlist [-ro]
identifier_1 ... identifier_n
You can use the number sign (#) as a delimiter to add comments. For
more information, see the exports(4) reference page.
2. Add the following information to the /etc/rc.config.common file by
using the /usr/sbin/rcmgr command, which has the following syntax:
/usr/sbin/rcmgr set variable value
a. Indicate that this system is a server, by entering the following
command:
# /usr/sbin/rcmgr set NFSSERVING 1
(A zero (0) in place of the 1 indicates that this system is not a
server.)
b. Specify the number of nfsd server threads you want to run on the
system. Separate symbols are used for UDP threads and TCP
threads. For example, to run 8 TCP threads and 4 UDP threads,
enter the following commands:
# /usr/sbin/rcmgr set NUM_TCPD 8
# /usr/sbin/rcmgr set NUM_UDPD 4
You can run up to 128 server threads for both transports
combined. Although 8 server threads for each transport is
usually adequate, if NFS client performance is slow, a possible
solution is to increase the number of server threads.
c. Set the NONROOTMOUNTS parameter. Setting this parameter to 0
specifies that only root users on the client systems can mount
file systems. Setting it to 1 specifies that anyone on the
client systems can mount file systems.
The following command specifies that users must be running as
root to mount file systems from the server:
# /usr/sbin/rcmgr set NONROOTMOUNTS 0
d. Specify whether you want to run the PC-NFS daemon. PC-NFS
software provides personal computers on your network with the
same capabilities as NFS. PC-NFS is based on the client/server
model. The client software runs on the personal computer. The
server software runs on the Tru64 UNIX server. Instructions for
setting up the PC-NFS client software is provided with the PC-NFS
software documentation.
To specify that you want to run the PC-NFS daemon, enter the
following command:
# /usr/sbin/rcmgr set PCNFSD 1
You must then export the directories you want to mount on the PC
client to the client. Also, you must export the /usr/spool/pcnfs
directory to the PC client for the client to be able to utilize
network printing. For information on exporting directories, see
the Network Administration: Services manual.
e. Specify whether you want to run the NFS locking service to allow
clients to set advisory record locks on files exported to them.
To specify that you want to run the NFS locking service, enter
the following command:
# /usr/sbin/rcmgr set NFSLOCKING 1
Note, by default, 7 nfsiod daemons are run on all NFS systems. To
turn this client service off, enter the following command:
# /usr/sbin/rcmgr set NUM_NFSIOD 0
The /usr/sbin/rcmgr command appends the information to the end of the
/etc/rc.config.common file. For more information on the rcmgr utility, see
the rcmgr(8) reference page.
3. Make sure that one of the following is true for client systems to
which you are exporting file systems:
· They have an entry in the /etc/hosts file of the server.
· Their host information is in the hosts database, if the network
is serving host information with NIS or DNS.
· The server specifies the client's Internet address instead of its
host name in its /etc/exports file and the mountd daemon is not
configured to run with Internet address checking turned on.
4. Start the NFS daemons by entering the following command:
# /sbin/init.d/nfs start
# /sbin/init.d/nfsmount start
To stop the NFS daemons, enter the following command:
# /sbin/init.d/nfs stop
USING THE /ETC/FSTAB FILE TO SET UP CLIENTS
Use the following procedure to set up an NFS client, using the /etc/fstab
file:
1. Edit the /etc/fstab file.
Unless you are using an automatic mounting service, such as Automount
or AutoFS, edit the /etc/fstab file to contain an entry for each file
system that you want to mount on your system if you want it mounted
automatically. Specify the file system you are mounting, the server
you are mounting it from, the permissions with which it is mounted,
and the local mount point for it. The syntax for entries in the
/etc/fstab file is as follows:
fs_spec@server fs_file fs_vfstype fs_mntopts fs_freq fs_passno
For more information, see fstab(4).
The following is a sample /etc/fstab file:
/usr/dist@host1 /usr/dist nfs ro,bg 0 0
share/man@host2 /usr/share/man nfs ro,bg 0
/usr/staff/h0@host3 /nfs/host3/usr/staff/h rw,bg 0
/usr/staff/h1@host3 /nfs/host3/usr/staff/h1 nfs rw,bg 0 0
2. Create a local mount point for each remote file system that you
specified in the /etc/fstab file. The local mount points must
correspond exactly to the fs_file field in the /etc/fstab file. In
the preceding example, the client system uses the /etc/fstab file to
mount the remote file system /usr/share/man from host2. The
/etc/fstab entry specifies that the local mount point is also called
/usr/share/man on the client system. While this is the easiest way to
name the local mount point, it can have any name. To create the
/usr/share/man mount point, enter the following command:
# mkdir /usr/share/man
3. Make sure that one of the following is true for server systems from
which you are importing file systems:
· They have an entry in the /etc/hosts file of the client.
· Their host information is in the hosts database, if the network
is serving host information with NIS or DNS.
4. Edit the /etc/rc.config.common file by using the /usr/sbin/rcmgr
utility. Add the following information to the /etc/rc.config.common
file:
a. Whether this system is an NFS server (a system can be both a
client and a server).
b. The number of nfsiod daemons that you want the system to run.
To specify that you want this system to run 7 nfsiod daemons,
enter the following command:
# /usr/sbin/rcmgr set NUM_NFSIOD 7
You can run up to 64 nfsiod daemons. Although 7 nfsiod daemons
is usually adequate, if NFS read and write performance is slow,
you can increase the number of nfsiod daemons.
c. Optionally, you can turn on the NFS locking service, if you want
to be able to set advisory record locks on NFS-mounted files. To
do this, enter the following command:
# /usr/sbin/rcmgr set NFSLOCKING 1
Note that the NFS locking service must also be running on the
server.
The /usr/sbin/rcmgr command appends the information to the end of
the /etc/rc.config.common file. For more information on the
rcmgr utility, see rcmgr(8).
5. Start the NFS daemons by entering the following command:
# /sbin/init.d/nfs start
# /sbin/init.d/nfsmount start
Note
If you are using Automount or AutoFS on this system, you should
complete the steps in the Network Administration: Services manual
before starting the NFS daemons.
If you need to stop the NFS daemons, enter the following command:
# /sbin/init.d/nfs stop
ADMINISTERING AUTOMOUNT AND AUTOFS MAPS
You can customize Automount and AutoFS maps to suit your environment and
either administer them locally, distribute them using NIS, or both.
For information on creating and administering Automount and AutoFS maps,
see the Network Administration: Services manual.
RELATED INFORMATION
Commands: autofsd(8), automount(8), mountd(8), nfsconfig(8), nfsd(8),
nfsiod(8), rpc.lockd(8), rpc.statd(8)
Files: advfs(4), cdfs(4), fstab(4)
Network Information: nfs_intro(4)
Network Administration: Services, Technical Overview
|
Index for
Section 7 |
|
|
Alphabetical
listing for N |
|
 |
Top of
page |
|