[CentOS] How to make nodes in my local LAN see each other's names

[Les Mikesell]

On Fri, Dec 2, 2011 at 12:59 PM,  <m.roth at 5-cent.us> wrote:
>
>>>>>>> And we have our DHCP give out IP by MAC addresses, so they're
>>>>>>> effectively static.
>>>>>>
>>>>>> If you've done that, you might as well put them in DNS.  Linux tools
>>> <snip>
>>>>> Um, no can do: we don't run the DNS here on campus (a US gov't federal
>>>>> agency), we have blocks of IPs assigned to us. Within our division, we
>>>>> control the horizontal, we control the vertical.... <g>
>>>>
>>>> If you are giving out DHCP addresses, you are almost certainly giving
>>>> out DNS server addresses, and you can point that to one or more that
>>>> you control (probably on the same box(es) as the dhcp service).  And
>>>
>>> Les, you're missing the point: we are not *supposed* to be running a DNS
>>> server. There's another division that does that, the same one that
>>> assigns us the blocks of IP addresses. Please don't confuse me with the
>>> OP.
>>
>> I don't even understand what that means. Is there a mandate to do
>> things wrong?   Would someone fire you if you used windows for your
>> DHCP service and it was a version that had AD running as a DNS service
>> too?
>
> Ok, you *have* confused me with the OP. We run almost *no* Windows here,
> at least on the servers or workstations we support in this division. They
> do actual science here, and Windows...rotfl! running scientific compute
> clusters? To do what, figure out the first 100 decimal places of pi in a
> month?

So nobody ever needs a name/ip mapping to the nodes anyway?

> And running another DHCP server on the network is *not* a Good Thing, and
> I feel as though we'd get a lot of grief if we did. Rules and regulations,
> forget "corporate" rules.

I thought you said you _were_ running a DHCP server.  And the part
that confuses me is why anyone would split the addressing and naming
authority into something that doesn't match the topology.  That is, if
you are working together with whoever runs the DNS I'd expect the
name/IP mapping to be coordinated, probably with a central DHCP as
well, or if your network management is delegated to you, then you'd do
both independently.   But if you are running something unusual that
doesn't care about names or DNS then it doesn't matter...

-- 
   Les Mikesell
     lesmikesell at gmail.com