Re: SSH commands to HMC

Hi Andrew,

on what machine are you running the SSH client? Linux, AIX, something else?
This looks to me as either DNS problems (reverse resolving) on the HMC side,
or random generator starvation from the clients' side (much less likely
nowadays, but still...)

HTH,
tacho

On 9/12/06 3:30 PM, "Andrew Garnett" <andrewwdg@xxxxxxxxxxx> wrote:

Thanks to all for any advice.

Edward, the output from verbose mode is not very
helpful as you can see below (timeout).
The crazy thing is that an identical call 2 seconds
later works OK (below).
It is as if the 1st call fails, but somehow wakes up
the connection.

ssh -v -v -l hscroot 10.26.10.21 date
OpenSSH_3.7p1, SSH protocols 1.5/2.0, OpenSSL 0.9.7b
10 Apr 2003
debug1: Reading configuration data
/usr/local/etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to 10.26.10.21 [10.26.10.21] port
22.
debug1: connect to address 10.26.10.21 port 22:
Connection timed out
ssh: connect to host 10.26.10.21 port 22: Connection
timed out


root@node9>ssh -v -v -l hscroot 10.26.10.21 date
OpenSSH_3.7p1, SSH protocols 1.5/2.0, OpenSSL 0.9.7b
10 Apr 2003
debug1: Reading configuration data
/usr/local/etc/ssh_config
debug2: ssh_connect: needpriv 0
debug1: Connecting to 10.26.10.21 [10.26.10.21] port
22.
debug1: Connection established.
debug1: identity file /.ssh/identity type -1
debug1: identity file /.ssh/id_rsa type -1
debug2: key_type_from_name: unknown key type
'-----BEGIN'
debug2: key_type_from_name: unknown key type
'Proc-Type:'
debug2: key_type_from_name: unknown key type
'DEK-Info:'
debug2: key_type_from_name: unknown key type
'-----END'
debug1: identity file /.ssh/id_dsa type 2
debug1: Remote protocol version 1.99, remote software
version OpenSSH_3.4p1
debug1: match: OpenSSH_3.4p1 pat
OpenSSH_3.2*,OpenSSH_3.3*,OpenSSH_3.4*,OpenSSH_
3.5*
debug1: Enabling compatibility mode for protocol 2.0
debug1: Local version string SSH-2.0-OpenSSH_3.7p1
.
.
. etc until successful connection

I assume that ssh, ssl firewalls etc are OK since I do
actually get a success on subsequent calls.


--- "Davignon, Edward"
<Edward.Davignon@xxxxxxxxxxxxxx> wrote:

What are the results of verbose mode:

ssh -v -l hscroot 10.26.10.21 date

or extra verbose mode:

ssh -v -v -l hscroot 10.26.10.21 date


Edward Davignon
Lead Analyst - Distributed Systems
Utility Shared Services - IT
Energy East Corporation


-----Original Message-----
From: IBM AIX Discussion List
[mailto:aix-l@xxxxxxxxxxxxx] On Behalf Of
Andrew Garnett
Sent: Monday, September 11, 2006 10:38 AM
To: aix-l@xxxxxxxxxxxxx
Subject: SSH commands to HMC

All,

I am sending hmc commands to an HMC from a UNIX
command-line using ssh.
On the first call the connection times out (see
below).
On the subsequent call (immediately afterwards) it
connects and runs OK, as do any other iterations.
If I leave it a few minutes, I'm back to a timeout
and
then it continues OK.

root@node9>ssh -l hscroot 10.26.10.21 date
ssh: connect to host 10.56.0.224 port 22: Connection
timed out

root@node9>ssh -l hscroot 10.26.10.21 date
Sun Sep 10 00:20:58 BST 2006

This is hopeless for scripting.Anyone know what
causes
it ?






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