{"id":3585,"date":"2022-12-20T17:09:05","date_gmt":"2022-12-20T20:09:05","guid":{"rendered":"http:\/\/lode.uno\/linux-man\/index.php\/2022\/12\/20\/nscd-man8\/"},"modified":"2022-12-20T17:09:05","modified_gmt":"2022-12-20T20:09:05","slug":"nscd-man8","status":"publish","type":"post","link":"https:\/\/lode.uno\/linux-man\/2022\/12\/20\/nscd-man8\/","title":{"rendered":"NSCD (man8)"},"content":{"rendered":"

NSCD<\/h1>\n

NAME<\/a>
DESCRIPTION<\/a>
OPTIONS<\/a>
NOTES<\/a>
SEE ALSO<\/a>
COLOPHON<\/a> <\/p>\n

\n

NAME <\/a> <\/h2>\n

nscd \u2212 name service cache daemon<\/p>\n

DESCRIPTION <\/a> <\/h2>\n

nscd<\/b> is a daemon that provides a cache for the most common name service requests. The default configuration file, \/etc\/nscd.conf<\/i>, determines the behavior of the cache daemon. See nscd.conf<\/b>(5).<\/p>\n

nscd<\/b> provides caching for accesses of the passwd<\/b>(5), group<\/b>(5), hosts<\/b>(5) services<\/b>(5) and netgroup<\/i> databases through standard libc interfaces, such as getpwnam<\/b>(3), getpwuid<\/b>(3), getgrnam<\/b>(3), getgrgid<\/b>(3), gethostbyname<\/b>(3), and others.<\/p>\n

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. getspnam<\/b>(3) calls remain uncached as a result.<\/p>\n

OPTIONS <\/a> <\/h2>\n\n\n
<\/td>\n\n

\u2212\u2212help<\/b><\/p>\n<\/td>\n

<\/td>\n\n

will give you a list with all options and what they do.<\/p>\n<\/td>\n<\/tr>\n<\/table>\n

NOTES <\/a> <\/h2>\n

The daemon will try to watch for changes in configuration files appropriate for each database (e.g., \/etc\/passwd<\/i> for the passwd<\/i> database or \/etc\/hosts<\/i> and \/etc\/resolv.conf<\/i> for the hosts<\/i> database), and flush the cache when these are changed. However, this will happen only after a short delay (unless the inotify<\/b>(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 \/etc\/nsswitch.conf<\/i>. In that case, you need to run the following command after changing the configuration file of the database so that nscd<\/b> invalidates its cache:<\/p>\n

$ nscd \u2212i<\/b> <\/i><\/p>\n

SEE ALSO <\/a> <\/h2>\n

nscd.conf<\/b><\/i>(5), nsswitch.conf<\/b>(5)<\/p>\n

COLOPHON <\/a> <\/h2>\n

This page is part of release 5.10 of the Linux man-pages<\/i> project. A description of the project, information about reporting bugs, and the latest version of this page, can be found at https:\/\/www.kernel.org\/doc\/man\u2212pages\/.<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

nscd \u2212 name service cache daemon <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[5,52,4,702],"class_list":["post-3585","post","type-post","status-publish","format-standard","hentry","category-8-administracion-del-sistema","tag-5","tag-administracion","tag-man8","tag-nscd"],"gutentor_comment":0,"_links":{"self":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3585","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/comments?post=3585"}],"version-history":[{"count":0,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/posts\/3585\/revisions"}],"wp:attachment":[{"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/media?parent=3585"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/categories?post=3585"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lode.uno\/linux-man\/wp-json\/wp\/v2\/tags?post=3585"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}