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NSCD.CONF(5)               Linux Programmer's Manual              NSCD.CONF(5)

NAME
       /etc/nscd.conf - name service cache daemon configuration file
DESCRIPTION
       The  file  /etc/nscd.conf  is  read from nscd(8) at startup.  Each line
       specifies either an attribute and a value, or  an  attribute,  service,
       and  a  value.  Fields are separated either by SPACE or TAB characters.
       A '#' (number sign) indicates the beginning  of  a  comment;  following
       characters, up to the end of the line, are not interpreted by nscd.
       Valid services are passwd, group, hosts, services or netgroup.
       logfile debug-file-name
              Specifies  name  of the file to which debug info should be writ-
              ten.
       debug-level value
              Sets the desired debug level.  The default is 0.
       threads number
              This is the number of threads  that  are  started  to  wait  for
              requests.  At least five threads will always be created.
       max-threads number
              Specifies the maximum number of threads.  The default is 32.
       server-user user
              If  this  option  is  set, nscd will run as this user and not as
              root.  If a separate cache for every user is  used  (-S  parame-
              ter), this option is ignored.
       stat-user user
              Specifies the user who is allowed to request statistics.
       reload-count unlimited | number
              Limit  on the number of times a cached entry gets reloaded with-
              out being used before it gets removed.  The default is 5.
       paranoia <yes|no>
              Enabling paranoia mode causes nscd to  restart  itself  periodi-
              cally.  The default is no.
       restart-interval time
              Sets the restart interval to time seconds if periodic restart is
              enabled by enabling paranoia mode.  The default is 3600.
       enable-cache service <yes|no>
              Enables or disables the specified service cache.  The default is
              no.
       positive-time-to-live service value
              Sets  the  TTL  (time-to-live)  for positive entries (successful
              queries) in the specified cache for service.  Value is  in  sec-
              onds.   Larger  values  increase cache hit rates and reduce mean
              response times, but increase problems with cache coherence.
       negative-time-to-live service value
              Sets the TTL (time-to-live) for negative  entries  (unsuccessful
              queries)  in  the specified cache for service.  Value is in sec-
              onds.  Can result in  significant  performance  improvements  if
              there  are  several files owned by UIDs (user IDs) not in system
              databases (for example untarring the  Linux  kernel  sources  as
              root); should be kept small to reduce cache coherency problems.
       suggested-size service value
              This  is  the  internal  hash  table size, value should remain a
              prime number for optimum efficiency.  The default is 211.
       check-files service <yes|no>
              Enables or disables checking the file belonging to the specified
              service  for  changes.   The  files are /etc/passwd, /etc/group,
              /etc/hosts, /etc/services and  /etc/netgroup.   The  default  is
              yes.
       persistent service <yes|no>
              Keep  the content of the cache for service over server restarts;
              useful when paranoia mode is set.  The default is no.
       shared service <yes|no>
              The memory mapping of the nscd databases for service  is  shared
              with  the  clients  so  that  they  can  directly search in them
              instead of having to ask the daemon over the socket each time  a
              lookup is performed.  The default is no.
       max-db-size service bytes
              The  maximum allowable size, in bytes, of the database files for
              the service.  The default is 33554432.
       auto-propagate service <yes|no>
              When set to no for passwd or group  service,  then  the  .byname
              requests  are  not  added  to passwd.byuid or group.bygid cache.
              This can help with tables containing multiple  records  for  the
              same  ID.   The  default  is yes.  This option is valid only for
              services passwd and group.
NOTES
       The default values stated in this manual page originate from the source
       code  of  nscd(8)  and  are  used if not overriden in the configuration
       file.  The default values used in the configuration file of  your  dis-
       tribution might differ.
SEE ALSO
       nscd(8)
COLOPHON
       This  page  is  part of release 3.53 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

GNU                               2013-02-12                      NSCD.CONF(5)