Syncronise master and slave nameservers?

[Brad Knowles]

At 4:53 AM -0700 6/29/01, Henrik Malmgren wrote:

>  I wonder if there is a tool or something that checks if the master and
>  slave nameserver files are syncroniced, so if the slave can't do a
>  transfer (maybe after an edit with bad entry), the tool finds the
>  unsynced files.

	Most DNS debugging tools will check the SOA serial number of the 
primary and the secondaries, and compare them to see if they are the 
same.

	However, to compare the actual contents to see if they are the 
same, you would need to pull a copy of the entire zone from each 
machine, put the records in some sort of canonical order, ensure that 
the SOA serial number hasn't changed on any of them during the period 
of time you're downloading the various different copies, and then do 
an actual comparison of the resulting files.

	I don't know of anyone that has yet bothered to write a DNS 
debugging tool that goes to this kind of length.

-- 
Brad Knowles, <brad.knowles at skynet.be>

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