Given two nameservers and some zone files, do the nameservers respond with the same information when asked about the data in the zone files? This tools does the asking and the comparing.

Requirements:

A patched version of iscpy  (see rpm/iscpy-1.0.3-1.noarch.rpm)
A patched version of dnspython (see rpm/dnspython-1.10.0-1.noarch.rpm)

There is one option you need to configure in diff.config: the dir_path parameter. This is the relative path bind uses to resolve $INCLUDE statements.

If you have a file containing BIND zone statements, you can use this form.

python diffdns.py --ns1 dev1.foo.com --ns2 ns1.foo.com --zones-file /path/to/zones/zones.private

If you just want to test one zone use this form.

python diffdns.py --ns1 dev1.foo.com --ns2 ns1.foo.com --zone-name dc1.foo.com --file ~/path/to/zone/file

python diffdns.py --ns1 ns1.mozilla.com --ns2 ns2.mozilla.com --named-path ~/var/named/ --view-file ~/var/named/config/view.public --second-named-path ~/testing/var/named/ --second-view-file ~/testing/var/named/config/view.public

Due to views, you will sometimes you need to pretend you are somewhere else when querying a production nameserver. You can do something like:

ssh -v juber@remote-host.mozilla.com -L 5353:localhost:53

Then use:

... --ns2 localhost --ns2-port 5353 --ns2-tcp ...

This changes the port from the default 53 to 5253 and use TCP instead of UDP (TCP is needed because SSH only forwards TCP).