Les Mikesell wrote:
On Fri, Dec 2, 2011 at 12:59 PM, m.roth@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?
We do map. We even have a master hosts file for the division. But DNS is not our purview.
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
We are. In fact, each cluster head also runs a DHCP server, for all their nodes.
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...
We have a subnet that we control. We do the IPs. We give names, then register them with the group that does the whole campus, and they update the DNS.
mark
-- Les Mikesell lesmikesell@gmail.com _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos