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       nsdc - Name Server Daemon (NSD) control script.


       nsdc  [-c  configfile]  start  |  stop  |  reload | rebuild | restart |
       running | update | notify | patch


       Nsdc is the shell script that used to control nsd(8) and zonec(8)  from
       NSD  distribution.   Nsdc  is also suitable to be linked into /etc/rc.d
       directory on BSD like systems for automatic startup of nsd(8)  at  boot

       At   every   invokation,   nsdc   will  try  to  read  the  nsd.conf(5)
       configuration  file.  An  example  of  such   configuration   file   is
       distributed  with  the NSD package as nsd.conf.sample.  The config file
       is checked for errors before it is used, see nsd-checkconf(8).

       Possible nsdc applications are:

       start  Start nsd(8).

       stop   Shut down nsd(8) by sending SIGTERM to it.

       reload Initiate nsd(8) name space database reload by sending SIGHUP.

              Rebuild  the  nsd(8)  database   by   invoking   zonec(8)   with
              appropriate arguments.

              Restart nsdc(8). This equals to nsdc stop && nsdc start.

              Check whether nsd(8) is running. Returns error message and error
              code if it is not running, and no message and  zero  error  code

       update Updates  all  the  slave  zones  which  have  allow-notify: from
              localhost  (  or  ::1)  allowed.   If  a  TSIG  key  is
              specified  for the allow-notify statement in the config file, it
              will be used to secure the notify. Note that NSD keeps track  of
              zone  timeouts automatically, this is only needed if you want to
              manually  force  updates  by  sending  notify  messages  to  the

              Another method you can use is to stop nsd, delete the xfrd.state
              file and then start nsd again. It will try to update all  zones.
              This method does not require allow-notify: statements.

       notify Sends  notify  messages to all the slaves for all the zones that
              have the notify: keyword in the nsd.conf file. If a TSIG key  is
              specified  for a notify statement, it will be used to secure the
              notification message to that slave server.

       patch  Merge zone transfer changes back to zone files. It reads in  the
              nsd database (nsd.db) and difffile (ixfr.db), and overwrites the
              zone  text  files  if  they  have  been  updated.  Running  this
              regularly ensures that the difffile does not grow infinitely.


       -c configfile
              Specify    configfile    to   use   instead   of   the   default


              Configuration file for nsd to change default pathnames  and  NSD
              flags.  The  zone  names,  pathnames  to  zone  files and access
              control lists are also in nsd.conf(5).

              default NSD database

              Lockfile for the NSD database access by operator tools.

              Journal of zone transfers, the diff file containing the new zone
              contents transferred.

              State  for  the zone transfer process of NSD.  Contains timeouts
              for the zones and whether zones are expired.

              the process id of the name server.


       Nsdc will return zero return code if operation was  successful  and  an
       error message to standard output plus a non-zero return code otherwise.


       nsd(8),  nsd.conf(5),  nsd-checkconf(8),  nsd-notify(8),  nsd-patch(8),
       nsd-xfer(8), zonec(8)


       NSD  was  written  by  NLnet  Labs  and RIPE NCC joint team. Please see
       CREDITS file in the distribution for further details.


       Syntax checking of the config file is rudimentary  and  error  messages
       may  be wrong. If you do a nsdc patch, whilst a (long) zone transfer is
       busy, the zone transfer  contents  will  be  partially  lost.  After  a
       reload,  this  will  be  detected  and  the  zone  transfer  should  be
       restarted. The reload that happens at the end of nsdc patch also  frees
       up memory churn in NSD caused by zone transfers.