Re: using ssh in a clustered environment
From: Jim Prewett (download_at_hpc.unm.edu)
Date: 12/24/03
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- In reply to: Ken.Simpson_at_marsh.com: "using ssh in a clustered environment"
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Date: Tue, 23 Dec 2003 16:40:06 -0700 (MST) To: Ken.Simpson@marsh.com
Hi,
I run a 256 node cluster. We consider the cluster to be one machine and
therefore give each host the same hostkey. There definantly would be the
possibility of one machine playing the middleman, but realistically if you
have root on one of them you will sooner or later have root on all of them
anyway.... This setup also greatly simplifies key managment for us.
hope this helps,
Jim
On Tue, 23 Dec 2003 Ken.Simpson@marsh.com wrote:
> I am using OpenSSH in a clustered environment. There are two hosts, each
> with its own hostname and IP address. Then there is a 3rd hostname & IP
> address, actually a "virtual hostname/ip address". This third hostname is
> associated with an application and it can move from host to host. E.g.,
> normally the VIP address is configured on hostA; when hostA fails, it is
> moved to hostB. The SSH problem is that I want to connect to the VIP /
> Vhostname. When the virtual hostname moves hostA to hostB, I get the 'man
> in the middle' error. Is there a way around this ?
>
>
-- James Prewett Systems Team Leader Designated Security Officer HPC Systems Engineer III @ HPC@UNM -- download@hpc.unm.edu Jim@Prewett.org
- Previous message: Eloi Granado: "Re: Achieving tunneling convenience"
- In reply to: Ken.Simpson_at_marsh.com: "using ssh in a clustered environment"
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