Gregor Maier <[EMAIL PROTECTED]> wrote:
>
> On 26-Jul-2001 Rusty Carruth wrote:
> > Glen Sagers <[EMAIL PROTECTED]> wrote:
> ...
> >> Do I need to manually setup DHCP or DNS?
> >> Glen
> >
> > Well, sort of.
> >
> ...
> > Then it should be much faster...
> ...
> If you're network gets bigger you may want to setup a small dns server for your
> network. The method with /etc/hosts works fine. But you'll have to keep all
> hosts files on all machine up to date or you'll fancy results.
> If you have more than 5 I would really suggest to setup dns. Have a look at the
> DNS-Howto. It's quite good and you get a working dns server in (almost) no time
And, since Glen said that he's using dhcp and thus 'cannot know' what IP
addresses go with what machine (which is not the point, really), then its
sounding like dns is the easiest answer.
However, I'd not bother trying to make the names mean anything relative to
the machine that gets it. Lets not lose track of the whole purpose we're
doing this - to make ftpd able to find a name given an ip addr (later, if
we find out that ftpd will complain or error if that name and the name
the client machine knows itself by do not match, then we can address
the issue of making the names match, but it will be much easier I think).
(Well, ok, the ACTUAL reason is to get rid of the startup delay, but I'm
pretty sure the startup delay is because of reverse-name-lookup, so that's
what we're trying to fix here ;-)
Ok, so either on DNS or in /etc/hosts, define names for all IP addresses
your DHCP server could give out. Write a little basic program to create
the file, as its a template with numbers changing. Since I know /etc/hosts
by heart, I'll use it as an example, but you could 'easily' modify this to
be the format bind (or equiv) needs. So, if you were doing /etc/hosts,
it might look like this:
10.40.1.1 m001001
10.40.1.2 m001002
10.40.1.3 m001003
...etc...
10.40.2.1 m002001
10.40.2.2 m002002
...etc...
that gives every possible ip address a name, and you don't have to change
the name whenever a machine gets a new IP address.
(BTW - if you are using ISC dhcp I think you can set it up so that ip addresses
are assigned based upon MAC address of the host adapter, thus keeping the
addresses the same for the machines you decide you want to stay at one 'spot')
Now, if you want to assign reasonable names to each individual machine, you're
going to be forced into working with your DHCP server to assign the same IP
address (or name, but its the same thing, really) based upon the client
host adapter's MAC address. But that was not the point of the original
question, as I recall ;-)
rc
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