Bind 9.7.2-P2: skipping zone transfer

Mark Andrews marka at isc.org
Mon Oct 18 02:49:21 UTC 2010


Please fix you mail client to generate legal email addresses when 
sending email.

'J. Thomsee <list at jth.net>' is not syntacticly valid as the period
is not quoted.  '"J. Thomsee" <list at jth.net>' is legal as is
'J Thomsee <list at jth.net>'.

repl: bad addresses:
	J. Thomsee <list at jth.net> -- no at-sign after local-part (<)

As to your problem, I suspect that you generated so many concurrent
TCP connections that you caused connection failures at the TCP layer
due to all the old connections in TCP timed wait state.  The log
message is the result of a connect() call failing and the master
being marked as broken.

Mark

In message <3nvjb6pb8i89rfl08grh80ap15a41p8n69 at 4ax.com>, J. Thomsen <list at jth.n
et> writes:
> The handling of large numbers of zone transfers between master and slave is=
>  not working
> well.
> Having several thousands of zones and a new slave DNS on the same internal =
> network made me
> change the low defaults to this:
> 
> master:
> transfers-out 20; transfers-per-ns 20;
> 
> slave:
> transfers-in 20; transfers-per-ns 20;
> 
> It had catastrophic results.
> 
> The slave transferred about 400 zones and then displaying
> a lot of "skipping zone transfer (cached)" messages and silence.
> 
> Ordinary dig and rndc requests to both servers were working fine both with =
> UDP and TCP also
> from the slave server.
> 
> After 10 minutes of no action a repeat was performed.
> The same after another 10 minutes, then no action for many minutes.
> 
> Changing to
> transfers-per-ns 10; =
> 
> made no difference.
> 
> I had to go down to =
> 
> transfers-per-ns 4;
> before things were working.
> 
> Something is not right here and should be looked into.
> 
> 
> - J=F8rgen Th
> _______________________________________________
> bind-users mailing list
> bind-users at lists.isc.org
> https://lists.isc.org/mailman/listinfo/bind-users
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org



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