NAME

       nsd-checkzone - NSD zone file syntax checker.

SYNOPSIS

       nsd-checkzone [-h] zonename zonefile

DESCRIPTION

       nsd-checkzone reads a DNS zone file and checks it for errors.  It prints errors to stderr.
       On failure it exits with nonzero exit status.

       This is used to check files before feeding them to the nsd(8) daemon.

OPTIONS

       -h     Print usage help information and exit.

       zonename
              The name of the zone to check, eg. "example.com".

       zonefile
              The file to read, eg. "zones/example.com.zone.signed".

       -p     Print the zone contents to stdout if the zone is ok. This prints the contents as it
              has  been  parsed,  not  literally  a  copy  of  the  input,  but as printed by the
              formatting routines in NSD, much like the nsd-control command write does.

       -i <oldzonefile>
              Create an IXFR from the differences between the old zone  file  and  the  new  zone
              file.  The  argument  to  the  -i  option  is the old zone file, the other zonefile
              argument passed is the new zonefile.

              The difference is computed between the two zonefiles by keeping one version of  the
              zone  in  memory,  and  another  version in a temporary file. The temporary file is
              located at the zonefile directory. This is also where the result is written,  to  a
              file  with  the zonefile name, ending with '.ixfr'. This is also where NSD reads it
              when IXFRs are configured for the zone.

              The other existing ixfr files are renamed to become older  IXFR  contents  for  the
              zone,  if any such files exist.  If the output file already exists with the correct
              contents, no new file is created. The contents of the header of the output file are
              checked for that, if it already exists.

       -n <ixfr number>
              The  number  of  IXFR  versions to store, at most. Default 5. This is the number of
              files that is created with ixfr contents for the zone. Older stored  IXFR  versions
              are deleted when the number is exceeded.

       -s <ixfr size>
              The  number of bytes of storage to use for IXFRs. Default is 1048576. If an IXFR is
              bigger it is not created, and if the sum of IXFR storage exceeds  it,  older  IXFRs
              versions are deleted.

SEE ALSO

       nsd(8), nsd-checkconf(8)

AUTHORS

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