[H-GEN] named on RedHat 7.x

[Ewan Edwards]

[ Humbug *General* list - semi-serious discussions about Humbug and     ]
[ Unix-related topics. Posts from non-subscribed addresses will vanish. ]

On Thursday 08 August 2002 17:55, you wrote:
> [ Humbug *General* list - semi-serious discussions about Humbug and     ]
> [ Unix-related topics. Posts from non-subscribed addresses will vanish. ]
>
> On Thu, 8 Aug 2002, Ewan Edwards wrote:
> > A colleague of mine has recently setup DNS on a RedHat box at home and
> > has asked why the default setup seems to have 5 instances of named
> > running
>
> Normally a few copies are pre-forked to improve performance for remote
> clients.  Apache & squid often do the same thing.

Is that configurable somewhere?  I understand it is for Apache with the 
StartServers directive in httpd.conf.

>
> > from start up.  I don't yet know anything about configuring bind so I'm
> > hoping some one on this list can help me answer the question.
> >
> > I assume that if there is no good reason to maintain 5 instances, the
> > next question will be asking how to configure it to run, say, only one
> > instance.
>
> Unless he is managing a domain or needing a local caching dns server there
> is no need to run _any_ copies of named.  If he is needing named I'd leave

Yes, he is managing a small domain, one of those HomeIP ones.

> it at 5 copies myself.  The performance overheads are negligable as any
> un-needed apps will be swapped out eventually.

I suppose I'm guilty of neglecting to mention the box he's running this on is 
a 486-100 with 48MB RAM.  Still negligable?

>
> > I've had a look on the network here at a Solaris box and a HPUX box both
> > running bind and seen that both have only the one instance running, so I
>
> You seem to have many dns servers running :)  It is best to avoid running
> daemons when they are un-needed.  They bind to a port and theoretically
> can be exploitable.
>
> > guess it isn't necessary to run multiple instances.
>
> Cheers,
> 	-Rob
>
> -- Robert Brockway B.Sc. email: robert at timetraveller.org  ICQ: 104781119
>    Linux counter project ID #16440 (http://counter.li.org)
>    "The earth is but one country and mankind its citizens" -Baha'u'llah
>
>
> --
> * This is list (humbug) general handled by majordomo at lists.humbug.org.au .
> * Postings to this list are only accepted from subscribed addresses of
> * lists 'general' or 'general-post'.  See http://www.humbug.org.au/


-- 
This transmission is for the intended addressee only and is confidential information.  If you have received this transmission in error, please delete it and notify the sender.  The contents of this e-mail are the opinion of the writer only and are not endorsed by the Mincom Group of companies unless expressly stated otherwise.


--
* This is list (humbug) general handled by majordomo at lists.humbug.org.au .
* Postings to this list are only accepted from subscribed addresses of
* lists 'general' or 'general-post'.  See http://www.humbug.org.au/