After configuration, DNS starts automatically if
/etc/named.conf is present. When named starts up, it
writes its process id to the file /etc/named.pid. This is useful
to programs that want to send signals to named.
If you encounter problems with named, first view the logfile
/usr/adm/syslog for any errors.
If none are found, use the Name Daemon Control program,
to troubleshoot DNS
without restarting the named process.
Options for /etc/ndc include:
Causes named to read named.conf and reload the database,
overwriting cached data. This is useful when you make
a change to a data file and you want named's internal database
to reflect the change.
The reload option
also has the effect of scheduling all secondary zones
for serial-number checks, which could lead to zone transfers ahead of
the usual schedule. Normally, serial-number comparisons are done only at
the intervals specified in the zone's SOA record.
Dumps the current database and cache to /var/tmp/named_dump.db.
This gives you an indication to whether the database was loaded
Turns on debugging. Each following USR1 increments the debug level.
The output goes to /var/tmp/named.run.
Turns off debugging completely.
Toggles tracing of all incoming queries. The trace is sent
to /usr/adm/syslog and provides a large amount of data.
The ndc qrylog option also works.
Administering and troubleshooting DNS
© 2003 Caldera International, Inc. All rights reserved.
SCO OpenServer Release 5.0.7 -- 11 February 2003