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 time.
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).
Initiate nsd(8) name space database reload by sending
SIGHUP.
rebuild
Rebuild the nsd(8) database by invoking zonec(8) with appropriate
arguments.
restart
Restart nsdc(8). This equals to nsdc stop && nsdc start.
running
Check whether nsd(8) is running. Returns error message and error
code if it is not running, and no message and zero error code
otherwise.
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
localhost.
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.
OPTIONS
-c configfile
Specify configfile to use instead of the default
/etc/nsd/nsd.conf.
FILES
/etc/nsd/nsd.conf
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).
/var/db/nsd/nsd.db
default
NSD
database
/var/db/nsd/nsd.db.lock
Lockfile for the
NSD
database access by operator tools.
/var/db/nsd/ixfr.db
Journal of zone transfers, the diff file containing the new zone
contents transferred.
/var/db/nsd/xfrd.state
State for the zone transfer process of
NSD.
Contains timeouts for the zones and whether zones are expired.
/var/run/nsd.pid
the process id of the name server.
DIAGNOSTICS
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
was written by NLnet Labs and RIPE NCC joint team. Please see
CREDITS file in the distribution for further details.
BUGS
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.