Date: Sat, 24 May 1997 14:45:50 +0100 From: Josef Karthauser <joe@pavilion.net> To: freebsd-hackers@FreeBSD.ORG Subject: Re: Named -- Specifying addresses to bind to. Message-ID: <19970524144550.20530@pavilion.net> In-Reply-To: <Pine.BSF.3.91.970524102434.14689V-100000@panda.hilink.com.au>; from Daniel O'Callaghan on Sat, May 24, 1997 at 10:27:45AM %2B1000 References: <19970523140504.34429@pavilion.net> <Pine.BSF.3.91.970524102434.14689V-100000@panda.hilink.com.au>
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On Sat, May 24, 1997 at 10:27:45AM +1000, Daniel O'Callaghan wrote: > > > On Fri, 23 May 1997, Josef Karthauser wrote: > > > > All you have to do is start named before the aliases. > > > > > Which it doesn't do in the new /etc/rc* files. :( > > BTW I want it to bind to one of the aliases. It doesn't matter if it also > > binds to the network address of the card. > > Why do you want to bind to one of the aliases? You aren't running your > own secondary on the same machine, are you? That would be terrible - it > defeats the purpose of the secondary. Hmm that'd be bad wouldn't it ;). Fortunately we're not doing that here. We've got three name servers around the system. They're all on .1 or .2 ip addresses (i.e. 194.242.128.1), and these IP addresses exist within our customer's tcp stacks for their DNS lookups. To make it flexible we use these ip addresses as aliases upon various machines as it makes it easy to move this service around should we need to perform maintainence on the supporting machines. One of the supporting DNS machines, 194.242.128.2, also currently lives on our virtual web server. This also has a whole class C of DNS addresses available to it to bind web server onto. This machine does a lot of reverse DNS lookups for logs, etc, and so it is also good that it performs its own DNS lookups. I guess it might horrify some people to think of running named on an alias address. I don't see why though, if aliases are reliable. If they're not then we've got different problems ;) Joe. > It's hard to cover all possibilities in /etc/rc.*, but I can see that it > might be sensible to start named between the initial ifconfigs and the > alias ifconfigs. > > Danny -- Josef Karthauser Technical Manager Email: joe@pavilion.net Pavilion Internet plc. [Tel: +44 1273 607072 Fax: +44 1273 607073]
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