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
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 (127.0.0.1 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.
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
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 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.