NSCD.CONF(4)NSCD.CONF(4)NAMEnscd.conf - name service cache daemon configuration
SYNOPSIS
/etc/nscd.conf
DESCRIPTION
The nscd.conf file contains the configuration information for nscd(1M).
Each line specifies either an attribute and a value, or an attribute,
cachename, and a value. Fields are separated either by SPACE or TAB
characters. A `#' (number sign) indicates the beginning of a comment;
characters up to the end of the line are not interpreted by nscd.
cachename is represented by hosts, ipnodes, passwd, group, exec_attr,
prof_attr, user_attr, ethers, rpc, protocols, networks, bootparams,
audit_user, auth_attr, services, netmasks, printers, or project.
The attribute field supports the following:
check-files cachename value
Enables or disables checking the file belonging to the specified
cachename for changes. If enabled (which is the default), changes
in the corresponding file cause the cache to be invalidated within
10 seconds. Can be disabled if files are never modified for a
slight performance boost, particularly over NFS. value may be
either yes or no.
debug-level value
Sets the debug level desired. value may range from 0 (the default)
to 10. Use of this option causes nscd(1M) to run in the foreground
and not become a daemon. Note that the output of the debugging com‐
mand is not likely to remain the same from release-to-release;
scripts should not rely on its format.
enable-cache cachename value
Enables or disables the specified cache. value may be either yes or
no.
enable-per-user-lookup value
Enables or disables the ability of nscd to create a per-user nscd.
A per-user nscd performs per-user lookups and manages the per-user
cache. The per-user lookups might not be possible if the corre‐
sponding name service switch backends do not support it or are not
configured to do so. The value of this attribute can be either yes
or no.
keep-hot-count cachename value
This attribute allows the administrator to set the number of
entries nscd(1M) is to keep current in the specified cache. value
is an integer number which should approximate the number of entries
frequently used during the day.
logfile debug-file-name
Specifies name of the file to which debug info should be written.
Use /dev/tty for standard output.
maximum-per-user-nscd value
Sets the maximum number of per-user nscds that can be created and
managed by the main nscd daemon. The value is an integer.
negative-time-to-live cachename value
Sets the time-to-live for negative entries (unsuccessful queries)
in the specified cache. value is in integer seconds. Can result in
significant performance improvements if there are several files
owned by uids (user IDs) not in system databases; should be kept
small to reduce cache coherency problems.
per-user-nscd-time-to-live value
Sets the time-to-live value for a per-user nscd based on the last
time the per-user nscd was active. The value is an integer that
specifies a number of seconds.
positive-time-to-live cachename value
Sets the time-to-live for positive entries (successful queries) in
the specified cache. value is in integer seconds. Larger values
increase cache hit rates and reduce mean response times, but
increase problems with cache coherence. Note that sites that push
(update) NIS maps nightly can set the value to be the equivalent of
12 hours or more with very good performance implications.
suggested-size cachename value
Sets the suggested number of hash buckets in the specified cache.
This parameter should be changed only if the number of entries in
the cache exceeds the suggested size by more than a factor of four
or five. Since this is the internal hash table size, value should
remain a prime number for optimum efficiency.
This attribute is obsolete and will be silently ignored. nscd now
automatically adjusts the hash table size.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌────────────────────┬─────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├────────────────────┼─────────────────┤
│Availibility │ SUNWcsu │
├────────────────────┼─────────────────┤
│Interface Stability │ Committed │
└────────────────────┴─────────────────┘
SEE ALSOnscd(1M), audit_user(4), auth_attr(4), bootparams(4), ethers(4),
exec_attr(4), group(4), hosts(4), netmasks(4), networks(4), passwd(4),
printers(4), prof_attr(4), project(4), protocols(4), rpc(4), ser‐
vices(4), user_attr(4), attributes(5)
Aug 21, 2006 NSCD.CONF(4)
