Configuring and Managing MPE/iX Internet Services (August 2002)

Chapter 8
DNS BIND/iX
DNS BIND Troubleshooting Steps
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Look in the /etc/named.conf file and the directory directive will tell you where to look for these. They
are prefixed with db or zone, so may look like these examples:
db.cache, db.root, db.127.0.0,. db.cup, etc.
6. Configuration Validation: Once the configuration information is gathered, it’s time to sit down and
wade through it all, looking for problems. By now you should have a good idea of how this DNS BIND
topology fits together. Consider the symptoms, the history, the topology, and verify the levels of
configuration that might be responsible for these problems.
Experience is the best tool, but there is one very good resource available that will help in troubleshooting
DNS BIND:
DNS & BIND is a book written by Paul Albitz and Cricket Lui. The 2nd edition has recently been
published, with some useful additions for the newer, post 4.8.3, versions of BIND (4.9.3 is covered in some
detail). Published by O’Reilly & Associated, Inc. [2nd Edition ISBN: 1-56592-236-0]
7. Troubleshooting Tools: The following tools can be useful in troubleshooting DNS BIND problems:
nslookup (Available on all systems)
ping (Available on all systems)
Further information on the use of these tools can be found in the book DNS & BIND, as well as in the
system man pages.