NSSYNC
	DNS Zone Files Maintenance Utility	Sergey Poznyakoff

4.1 General Settings

These settings modify the behavior of nssync as a whole.

Configuration: pidfile file

At startup, check if file already exists and is owned by an existing process. Exit if so. Use this statement to avoid accidentally running two copies of nssync simultaneously.

Configuration: tempdir dir

Sets the name for the temporary directory. This is a directory where nssync creates temporary zone files. The argument must point to an existing directory.

Configuration: check-ns bool

If set to true, nssync will check the list of NS servers prior to creating a zone file. The file will be created only if IPv4 address of one of the servers matches one of the IP addresses of the host on which nssync is run.

Configuration: named-conf file

Defines the full pathname of the named configuration file. Default is /etc/named.conf.

Configuration: bind-include-path list

Sets include search path for include directives found in BIND configuration. The argument is either a single directory or a list of directories (see list).

Configuration: zonefile-pattern pat

Defines the pattern for zone file names. The name of each zone file is created by expanding variable references in the pat argument. The following variable references are defined:

$zone

${zone}

Name of the zone, without the trailing dot.

$synctag

${synctag}

Zone synchronization tag (see Synchronization Block).

Both notations (with and without braces) are equivalent. The notation with curly braces should be used if the reference is immediately followed by a letter.

The default zone file pattern is ‘$zone.$synctag’.

Configuration: zone-conf pat

Defines the pattern for zone configuration file, i.e. a file containing zone statements.

The handling of pat is similar to that in zonefile-pattern, except that only the ‘$synctag’ reference is defined.

Configuration: compare-command cmd

Defines a command to be used for comparing two zone files. The cmd must be a command taking two files as its arguments and returning 0 if they are the same or non-zero if they differ. Nssync uses this command to determine whether a particular zone has changed. The following variable references are expanded in cmd:

$oldfile

${oldfile}

Old zone file.

$newfile

${newfile}

New zone file.

The default compare-command value is:

cmp $oldfile $newfile > /dev/null

Configuration: reload-command cmd

Defines a command to reload the nameserver. The default is ‘/usr/sbin/rndc reload’.