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NFS.CONF(5) File Formats Manual NFS.CONF(5)
NAME
nfs.conf - general configuration for NFS daemons and tools
SYNOPSIS
/etc/nfs.conf
DESCRIPTION
This file contains site-specific configuration for various NFS daemons and other pro-
cesses. Most configuration can also be passed to processes via command line arguments,
but it can be more convenient to have a central file. In particular, this encourages con-
sistent configuration across different processes.
When command line options are provided, they override values set in this file. When this
file does not specify a particular parameter, and no command line option is provided, each
tool provides its own default values.
The file format supports multiple sections, each of which can contain multiple value as-
signments. A section is introduced by a line containing the section name enclosed in
square brackets, so
[global]
would introduce a section called global. A value assignment is a single line that has the
name of the value, an equals sign, and a setting for the value, so
threads = 4
would set the value named threads in the current section to 4. Leading and trailing spa-
ces and tab are ignored, as are spaces and tabs surrounding the equals sign. Single and
double quotes surrounding the assigned value are also removed. If the resulting string is
empty, the whole assignment is ignored.
Any line starting with "#" or ";" is ignored, as is any blank line.
If the assigned value started with a "$" then the remainder is treated as a name and
looked for in the section [environment] or in the processes environment (see environ(7)).
The value found is used for this value.
The value name include is special. If a section contains
include = /some/file/name
then the named file will be read, and any value assignments found there-in will be added
to the current section. If the file contains section headers, then new sections will be
created just as if the included file appeared in place of the include line. If the file
name starts with a hyphen then that is stripped off before the file is opened, and if file
doesn't exist no warning is given. Normally a non-existent include file generates a warn-
ing.
Lookup of section and value names is case-insensitive.
Where a Boolean value is expected, any of true, t, yes, y, on, or 1 can be used for
"true", while false, f, no, n, off, or 0 can be used for "false". Comparisons are case-
insensitive.
SECTIONS
The following sections are known to various programs, and can contain the given named val-
ues. Most sections can also contain a debug value, which can be one or more from the list
general, call, auth, parse, all. When a list is given, the members should be comma-sepa-
rated.
general
Recognized values: pipefs-directory.
See blkmapd(8), rpc.idmapd(8), and rpc.gssd(8) for details.
exports
Recognized values: rootdir.
Setting rootdir to a valid path causes the nfs server to act as if the supplied
path is being prefixed to all the exported entries. For instance, if root-
dir=/my/root, and there is an entry in /etc/exports for /filesystem, then the
client will be able to mount the path as /filesystem, but on the server, this will
resolve to the path /my/root/filesystem.
exportd
Recognized values: threads, cache-use-upaddr, ttl, state-directory-path
See exportd(8) for details.
Note that setting "debug = auth" for exportd is equivalent to providing the
--log-auth option.
nfsdcltrack
Recognized values: storagedir.
The nfsdcltrack program is run directly by the Linux kernel and there is no oppor-
tunity to provide command line arguments, so the configuration file is the only way
to configure this program. See nfsdcltrack(8) for details.
nfsd Recognized values: threads, host, port, grace-time, lease-time, udp, tcp, vers2,
vers3, vers4, vers4.0, vers4.1, vers4.2, rdma,
Version and protocol values are Boolean values as described above, and are also
used by rpc.mountd. Threads and the two times are integers. port and rdma are
service names or numbers. See rpc.nfsd(8) for details.
mountd Recognized values: manage-gids, descriptors, port, threads, reverse-lookup, cache-
use-upaddr, ttl, state-directory-path, ha-callout.
These, together with the protocol and version values in the [nfsd] section, are
used to configure mountd. See rpc.mountd(8) for details.
Note that setting "debug = auth" for mountd is equivalent to providing the
--log-auth option.
The state-directory-path value in the [mountd] section is also used by exportfs(8).
statd Recognized values: port, outgoing-port, name, state-directory-path, ha-callout.
See rpc.statd(8) for details.
lockd Recognized values: port and udp-port.
See rpc.statd(8) for details.
sm-notify
Recognized values: retry-time, outgoing-port, and outgoing-addr.
See sm-notify(8) for details.
gssd Recognized values: verbosity, rpc-verbosity, use-memcache, use-machine-creds, use-
gss-proxy, avoid-dns, limit-to-legacy-enctypes, context-timeout, rpc-timeout,
keytab-file, cred-cache-directory, preferred-realm, set-home.
See rpc.gssd(8) for details.
svcgssd
Recognized values: principal, verbosity, rpc-verbosity, idmap-verbosity.
See rpc.svcgssd(8) for details.
exportfs
Only debug= is recognized.
FILES
/etc/nfs.conf
Default NFS client configuration file
/etc/nfs.conf.d
When this directory exists and files ending with ".conf" exist, those files will
be used to set configuration variables. These files will override variables set
in /etc/nfs.conf
SEE ALSO
nfsdcltrack(8), rpc.nfsd(8), rpc.mountd(8), nfsmount.conf(5).
NFS.CONF(5)
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