Re: Setting specific IP address?
From: Moe Trin (ibuprofin_at_painkiller.example.tld)
Date: 05/12/05
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Date: Thu, 12 May 2005 15:02:09 -0500
In article <d5vig4$laa$1@newsfeed.th.ifl.net>, andy smart wrote:
>Moe Trin wrote:
>> What is the difference in the effort to set up a static IP address on
>> the DHCP (D is for Dynamic), then to set it on the host?
>Actually, and of course I speak for me and my experience, its a lot
>faster to do via DHCP (with reservations if required) than to set client
>IP.
For us, it's the difference between filling in three entries in a text file,
and seven - seconds. Our network masks are standardized, so one need only
look at the paperwork that comes with the system to get hostname and IP.
The rest of the data is 'fingers on autopilot'. For an install or re-install,
it's not even that much, as the install program (about a 250 line shell
script) asks for the hostname, and does a lookup and then configures based
on that.
>We have 200+ stations here which often need rebuilding,
The only systems we rebuild are those going in or out of the facility,
which is extremely few.
>I would say that most get a total re-installation at least once if not
>twice a year.
When we do a re-install, it always is a 'wipe and install' operation,
as we do them as a security measure. But this effects well under one
percent of the system in any given week.
>I can start it going via PXE and go off and leave it knowing that it
>will get its OS installed, all the apps deployed via AD and an IP
>assigned via DHCP and I need not go back to it at any stage unless
>something goes wrong!
Installations aren't my regular job, but we're doing something similar.
We install a floppy drive (only a handful of systems have a removable
media drive - NONE of the workstations), and insert a floppy with the
installer. It comes up on the net using an installation IP, connects to
the file server, and just pours the bits straight to disk. Part of the
initial setup asks for hostname (which it looks up to get parameters) and
the type of install (workstation, <mumble>server, etc) and things are then
pretty much automatic. The paperwork takes longer than the work at the
keyboard. On new systems, the initial stage is slightly different,
because the install guy does an inventory (serial numbers, etc.), and
boots the system using a burn-in program (which is a heavy-duty compiling
program to flog the hardware to limits) which is run for a minimum of 48
hours to weed out the preme's..
>I used to work somewhere where we used to do fixed IP, so we had to have
>an accurate listing of which machines got which IP, then we had to set
>them up one at a time;
Part of the "customer service" our install crew does in to make and
attach an embossed tape (Dymo) label on the upper left of each computer
and monitor giving the hostname. As for accurate lists, thats why
we run DNS which is updated by a 'makefile' from the central database.
The registrar makes all the data entry into that as part of the system
registration process (which serves a multitude of processes, including
how the individual cost centers get billed for computer services).
>they've now gone onto DHCP (they also now re-build every one of their
>machines at least once a month which solves most of the problems we used
>to have in my day)
Cue the standard joke about how to fix any problem on a windoze box
'reboot', 'reload' 'reformat and reload' for increasing seriousness
of the problem. We don't use windoze, so we don't have that problem.
Old guy
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