apply changes to DNS without interruption

Hi,

is it possible to apply changes to DNS (bind) with a minimum of
interruption?

We currently restart the service, which in turn reloads the configuration
file.

A colleague smiled at it and told me that in Windows such changes can be
applied without restart and without interruption.

Regards
Knorpi

Knorpi <(E-Mail Removed)> wrote:
> is it possible to apply changes to DNS (bind) with a minimum of
> interruption?

Try "rndc reload", which claims to "Reload configuration file and
zones". There are several variations on this theme, including the ability
just to add new zones, or to reload only a single zone.

Chris

On Feb 20, 10:03*am, Knorpi <kno...@mailinator.com> wrote:
> Hi,
>
> is it possible to apply changes to DNS (bind) with a minimum of
> interruption?
>
> We currently restart the service, which in turn reloads the configuration
> file.

Why do you restart the service?

> A colleague smiled at it and told me that in Windows such changes can be
> applied without restart and without interruption.

What does this have to do with which operating system you are using?

DS

David Schwartz wrote:

> On Feb 20, 10:03Â*am, Knorpi <kno...@mailinator.com> wrote:
>> Hi,
>>
>> is it possible to apply changes to DNS (bind) with a minimum of
>> interruption?
>>
>> We currently restart the service, which in turn reloads the configuration
>> file.
>
> Why do you restart the service?
>
>> A colleague smiled at it and told me that in Windows such changes can be
>> applied without restart and without interruption.
>
> What does this have to do with which operating system you are using?
>
> DS

Because his "colleague" is a windows weenie

David Brown wrote:
> Knorpi wrote:
> What's the problem with restarting the service, if that's how the
> service works?

AFAIK this results in an interruption of about 30 sec.

Knorpi

Knorpi <(E-Mail Removed)> writes:

> David Brown wrote:
>> Knorpi wrote:
>> What's the problem with restarting the service, if that's how the
>> service works?
>
> AFAIK this results in an interruption of about 30 sec.

Are you restarting named or rebooting the computer?

On Feb 21, 1:12*pm, Joe Pfeiffer <pfeif...@cs.nmsu.edu> wrote:

> Knorpi <kno...@mailinator.com> writes:

> > David Brown wrote:

> >> What's the problem with restarting the service, if that's how the
> >> service works?

> > AFAIK this results in an interruption of about 30 sec.
>
> Are you restarting named or rebooting the computer?

A name server that is primary for a large number of zones (or a number
of large zones) can take quite awhile to start up depending on how the
server software is designed. It frequently requires reading in each
zone's file, parsing those files, and in some cases verifying that the
zones are still current with other servers.

DS

On Feb 21, 10:12*pm, Joe Pfeiffer <pfeif...@cs.nmsu.edu> wrote:
> Knorpi <kno...@mailinator.com> writes:
> > David Brown wrote:
> >> Knorpi wrote:
> >> What's the problem with restarting the service, if that's how the
> >> service works?
>
> > AFAIK this results in an interruption of about 30 sec.
>
> Are you restarting named or rebooting the computer?

On Feb 21, 10:12 pm, Joe Pfeiffer <pfeif...@cs.nmsu.edu> wrote:
> Knorpi <kno...@mailinator.com> writes:
> > David Brown wrote:
> >> Knorpi wrote:
> >> What's the problem with restarting the service, if that's how the
> >> service works?
>
> > AFAIK this results in an interruption of about 30 sec.
>
> Are you restarting named or rebooting the computer?

Mate,

How many zones you have on your DNS?
Try restart bind with 20k entries, just for tests,
you will find out that it will take same time.

On my box it can take over 2 min to have server back fully
operational.

Not every body have <10 zones on the box.

Kind regards,
Mateusz

Joe Pfeiffer wrote:
>> AFAIK this results in an interruption of about 30 sec.
> Are you restarting named or rebooting the computer?

We operate with more than 2000 zone files.

Knorpi

On Feb 22, 10:52*am, David Brown
<david.br...@hesbynett.removethisbit.no> wrote:

> Presumably you have (at least) two DNS servers for these zones. *If you
> restart them separately, there will be no interruption of service.

Right, assuming everything else is 100% reliable during this time
interval. It's always a good idea to reduce the interval during which
everything has to be perfect.

DS