Definitely keep your paperwork in order.
Sounds like what you need is corporate paperwork defining the cluster
as a peripheral execution-accelerator of the CentOs box, defining the
gig-E or whatever cluster-bus as a cluster-bus not a hidden lan
segment.
Alternatively, get the Network guys to
On Tue, Mar 18, 2008 at 5:59 PM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
Geesh, didn't mean to make it so complicated...
You didn't. Complexity spontaneously generates from the ether. :)
However, using the CentOs box as a gateway/router is not allowed on my
network, by company policy.
AM
To: Greater NH Linux User Group
Subject: Re: Setting up separate network question
On Tue, Mar 18, 2008 at 5:59 PM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
Geesh, didn't mean to make it so complicated...
You didn't. Complexity spontaneously generates from the ether. :)
However, using
On Wed, Mar 19, 2008 at 11:01 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
Good analysis. I'll go check this out. One of the reasons originally
given to me was they did not want the possibility of ever having a
DHCP server [mine] getting attached to the corporate network. I don't
blame
On Wed, Mar 19, 2008 at 11:01 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
One of the reasons originally given to me was they did not want the
possibility
of ever having a DHCP server [mine] getting attached to the corporate network.
A rogue DHCP server can wreck all sorts of havoc on to a
Ben Scott writes:
Hmmm. I expect you're not talking DHCP relay. So... do you mean:
Connect all cluster members, and the primary computer, to the same
physical network (broadcast domain).
Yes, via eth0.
Let everybody get IP addresses
from the corporate DHCP server.
Yes, via eth0.
On 18 Mar 2008 08:39:14 -0400, Kevin D. Clark [EMAIL PROTECTED] wrote:
No, what I am proposing is that this different IP network be strictly
limited to the dedicated switch/hub.
Is the idea here that each cluster node has two network interfaces?
(i.e., eth0 on each node is connected to the
Ben Scott writes:
Is the idea here that each cluster node has two network interfaces?
(i.e., eth0 on each node is connected to the corporate net, and eth1
on each node is connected to a different network -- one dedicated and
limited to the cluster.)
Yes, absolutely.
Regards,
--kevin
--
To: Greater NH Linux User Group
Subject: Re: Setting up separate network question
Ben Scott writes:
Is the idea here that each cluster node has two network interfaces?
(i.e., eth0 on each node is connected to the corporate net, and eth1
on each node is connected to a different network -- one
right now it is a pain to add the extra NICs
In some situations (and it sounds like yours might be one of them)
you can just use aliases for the interfaces to get the effect
of adding NIC cards. The syntax and the location of the config
files varies with the distribution but you're basically
Labitt, Bruce writes:
That is a good idea. However, right now it is a pain to add the extra
NICs to the nodes in question. I'll keep it in mind, though.
I guess I wasn't understanding the original problem description,
because when you originally stated:
I have a high speed network
On Mar 18, 2008, at 10:08, Kevin D. Clark wrote:
I have a high speed network connecting a cluster of computers. The
external network is much slower than the secondary network.
...I assumed that you had at least two NICs in every node on the
cluster, one connected to the slow, corporate LAN
On 18 Mar 2008 10:08:14 -0400, Kevin D. Clark [EMAIL PROTECTED] wrote:
At this point, I don't understand the problem description.
Yah... I'm starting to suspect this has turned into the blind men
examining the elephant. :-)
My own take: Bruce Labitt has an existing CentOS box. It might
, either on or
off list. Thanks.
Bruce
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Ben Scott
Sent: Tuesday, March 18, 2008 1:48 PM
To: Greater NH Linux User Group
Subject: Re: Setting up separate network question
On 18 Mar 2008 10:08:14 -0400, Kevin D
I've got to set up a secondary network on my Centos computer. I need to
be able to contact the internet from my secondary network computers.
However, I really don't want the outside network to get into my
secondary network. I have a high speed network connecting a cluster of
computers. The
On Mon, Mar 17, 2008 at 10:55 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
I just want to ask the list if I've got this right.
What you describe sounds like it will work, for most definitions of work.
Is this benign to the outside network?
It depends on what you mean by benign. I presume
separate network question
On Mon, Mar 17, 2008 at 10:55 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
I just want to ask the list if I've got this right.
What you describe sounds like it will work, for most definitions of
work.
Is this benign to the outside network?
It depends on what you mean
Sent: Monday, March 17, 2008 12:10 PM
To: Greater NH Linux User Group
Subject: Re: Setting up separate network question
On Mon, Mar 17, 2008 at 10:55 AM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
I just want to ask the list if I've got this right.
What you describe sounds like it will work
Labitt, Bruce writes:
I've got to set up a secondary network on my Centos computer. I need to
be able to contact the internet from my secondary network computers.
However, I really don't want the outside network to get into my
secondary network. I have a high speed network connecting a
On Mon, Mar 17, 2008 at 12:46 PM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
IT should be an enabler, correct?
Should be. Isn't always. Randall Schwartz ended up with a felony
conviction, a few $100K in fines, and facing jail time for doing what
(he claimed) was just part of his job at Intel.
On 17 Mar 2008 13:33:59 -0400, Kevin D. Clark [EMAIL PROTECTED] wrote:
I think that the easiest way to setup a cluster in the manner that you
describe would be to ignore ipmasq, let the nodes in your cluster get
their eth0 IP addresses via DHCP, and just statically assign some
private IP
: Monday, March 17, 2008 4:47 PM
To: Greater NH Linux User Group
Subject: Re: Setting up separate network question
On Mon, Mar 17, 2008 at 12:46 PM, Labitt, Bruce
[EMAIL PROTECTED] wrote:
IT should be an enabler, correct?
Should be. Isn't always. Randall Schwartz ended up with a felony
conviction
Ben Scott writes:
I'm not following the above. Where is the DHCP server for his
cluster coming from?
Somewhere on the corporate network, connected to via eth0.
And what good does having private addresses on
his node's eth1 interface do?
These help ensure that his cluster traffic
On 17 Mar 2008 18:28:31 -0400, Kevin D. Clark [EMAIL PROTECTED] wrote:
I'm not following the above. Where is the DHCP server for his
cluster coming from?
Somewhere on the corporate network, connected to via eth0.
Hmmm. I expect you're not talking DHCP relay. So... do you mean:
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