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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:40:15 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-15 19:40:15 +0000
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parentInitial commit. (diff)
downloadmanpages-399644e47874bff147afb19c89228901ac39340e.tar.xz
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Adding upstream version 6.05.01.upstream/6.05.01
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+.\" Copyright 1999 SuSE GmbH Nuernberg, Germany
+.\" Author: Thorsten Kukuk <kukuk@suse.de>
+.\"
+.\" SPDX-License-Identifier: GPL-2.0-or-later
+.\"
+.\" 2008-12-05 Petr Baudis <pasky@suse.cz>
+.\" Rewrite the NOTES section to reflect modern reality
+.\"
+.TH nscd 8 2022-10-30 "Linux man-pages 6.05.01"
+.SH NAME
+nscd \- name service cache daemon
+.SH DESCRIPTION
+.B nscd
+is a daemon that provides a cache for the most common name service
+requests.
+The default configuration file,
+.IR /etc/nscd.conf ,
+determines the behavior of the cache daemon.
+See
+.BR nscd.conf (5).
+.PP
+.B nscd
+provides caching for accesses of the
+.BR passwd (5),
+.BR group (5),
+.BR hosts (5)
+.BR services (5)
+and
+.I netgroup
+databases through standard libc interfaces, such as
+.BR getpwnam (3),
+.BR getpwuid (3),
+.BR getgrnam (3),
+.BR getgrgid (3),
+.BR gethostbyname (3),
+and others.
+.PP
+There are two caches for each database:
+a positive one for items found, and a negative one
+for items not found.
+Each cache has a separate TTL (time-to-live)
+period for its data.
+Note that the shadow file is specifically not cached.
+.BR getspnam (3)
+calls remain uncached as a result.
+.SH OPTIONS
+.TP
+.B "\-\-help"
+will give you a list with all options and what they do.
+.SH NOTES
+The daemon will try to watch for changes in configuration files
+appropriate for each database (e.g.,
+.I /etc/passwd
+for the
+.I passwd
+database or
+.I /etc/hosts
+and
+.I /etc/resolv.conf
+for the
+.I hosts
+database), and flush the cache when these are changed.
+However, this will happen only after a short delay (unless the
+.BR inotify (7)
+mechanism is available and glibc 2.9 or later is available),
+and this auto-detection does not cover configuration files
+required by nonstandard NSS modules, if any are specified in
+.IR /etc/nsswitch.conf .
+In that case, you need to run the following command
+after changing the configuration file of the database so that
+.B nscd
+invalidates its cache:
+.PP
+.in +4n
+.EX
+$ \fBnscd \-i\fP \fI<database>\fP
+.EE
+.in
+.SH SEE ALSO
+.BR nscd.conf (5),
+.BR nsswitch.conf (5)
+.\" .SH AUTHOR
+.\" .B nscd
+.\" was written by Thorsten Kukuk and Ulrich Drepper.