[clug] How to connect two Linux boxes? [SEC=UNCLASSIFIED]

[Ross.Wilson at ga.gov.au]

Hal and Jim, et al,

Thanks, thanks, thanks.

I couldn't use mii-tool (suggested by jeff) as it said nothing was in use (??).  However, the basic idea from both (ifconfig) was used, BUT the important bit was to turn off NetworkManager on the Ubuntu box.  That's what I was getting wrong.  With the manager running I could configure as above and the network seemed to be set up but I got errors: 'network unreachable' on a ping.  With the manager off all worked.

Thanks a million!
Ross

-----Original Message-----
From: Hal Ashburner [mailto:hal.ashburner at gmail.com]
Sent: Thursday, 3 September 2009 14:30
To: Wilson Ross
Cc: linux at lists.samba.org
Subject: Re: [clug] How to connect two Linux boxes? [SEC=UNCLASSIFIED]

On 03/09/09 14:08, Ross.Wilson at ga.gov.au wrote:
> Listers,
>
> I have a problem that probably just needs a simple suggestion in the right direction, so I'll ask it here.
>
> I have an Ubuntu box that is not connected to any network.  There is a large dataset (2TB with the promise of more) on another machine that runs Redhat Server.  This second machine has a running network connection and an unused second network card.
>
> I am trying to connect the two machines so I can transfer the large dataset to the Ubuntu machine. I thought that just connecting the two machines with a bit of Cat5 would be enough, but I'm stumped on how to configure both machines to get this working.

>
> Any suggestions for a Networking Newbie?  I use Ubuntu regularly but don't know much about Redhat.
>

you need to log in to the red hat box, then bring up the network
interface and give it an ip address

Put on your white coat and safety goggles then do something vaguely like

$ sudo ifconfig eth1 192.168.1.200

you need to check that eth1 is the right network interface and that the
192. ip address doesn't clash with your lan

then you need to do the same on your ubuntu laptop, but network manager
is likely to get in your way so just shut it down first

$ sudo /etc/init.d/NetworkManager stop
(if ubuntu does services differently so this doesn't work someone will
point this out I'm sure)

then
$ sudo ifconfig eth0 192.168.1.201

again adjust eht0 and the ip address to local conditions if required.
Now if the above worked you should be able to ping the redhat server

$ ping 192.168.1.200
and get a response

the easiest thing then is probably to use scp, this means you need
access to an ssh account on the RedHat box

$ scp -r account_name at 192.168.1.200:/path/to/data /local/path/on/laptop

type in the password and it should kick off.

2TB is a buttload of data, do check you have that kind of space
available to the laptop, I mention this as it's the sort of thing I have
overlooked in the past then kicked myself halfway through execution of
my grand master plan...

avahi can make all this much simpler if it's set up on both boxes.

All the best
Hal Ashburner