Bind9 Log data consistency

[Stefan Certic]

Hi Sebastian,

Thanks for response. Problem with another log file is that solution is doubling 
number of I/O transactions. At some point, data needs to be phrased into 
database and written to disk. I'm afraid doubling operations will cause 
bottlenecks during high load traffic peaks and slow-down maximal throughput.

Maybe I should consider another direction of storing bind events into database 
in strict transaction mode. Any known approaches?

Regards,
Stefan Certic

On Tuesday 08 March 2011 21:11:44 Sebastian Tymków wrote:
> Hi,
>
> I think you have to either monitor your syslog process or monitor bind log.
> You can use logging statement to  setup  file  for bind logging and monitor
> that file.
> http://www.zytrax.com/books/dns/ch7/logging.html
>
> Best regards,
>
> Sebastian
>
> On Tue, Mar 8, 2011 at 4:08 PM, Stefan Certic 
<stefan at routotelecom.com>wrote:
> > Hello,
> >
> >
> > Configuration:
> >
> >
> > Bind9 configured to write logs into sys/rsyslog. - From there, data is
> > getting phrased and used for analytical / billing purposes.
> >
> >
> > Scenario:
> >
> >
> > At some point, a problem arise and rsyslog crashes for any possible
> > reason. There is no unix logging socket any more bind can communicate
> > with.
> >
> >
> > Bind seems to have behaviour of ignoring this error and it continue with
> > normal operation - although no records are kept pointing to any
> > transactions happening on the system since the moment of last crash.
> >
> >
> > Is it possible to somehow configure bind to treat those errors as fatal.
> > For example - abort execution because socket cannot be opened, log files
> > written, and so on.
> >
> >
> > Or, is there any other solution to prevent possibility of answering DNS
> > queries without logs being stored and achieve full consistency between
> > events and logs.
> >
> >
> > Thanks & Regards,
> >
> >
> > --
> > Stefan Certic
> >
> >
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