ssh read from remote host xx.xx.xx.xx:Connection reset by peer

[Hari]

All,
I have a script that does SSH from one machine to the other both of
which are running linux. The script does SSH in a loop and every few
hours or so I see the following errors one followed by the other.

Read from remote host xx.xx.xx.xx: Connection reset by peer

Sometimes I also see the following error

ssh_exchange_identification: Connection closed by remote host.

Here is the ssh command executed in a loop.

ssh -q -o PasswordAuthentication=no -o "BatchMode=yes" -o
ServerAliveInterval=60 user@hostname "ls /var/log/"

I also have hosts.allow file which has SSHD: ALL in it. I do not have
a hosts.deny file and not many options enabled in ssh_config or
sshd_config.

Any ideas on why I am seeing these errors. Any suggestions/ideas/help
is much appreciated.

Thanks.

[Bill Marcum]

On 2009-07-28, Hari <harish.c...@gmail.com> wrote:
> All,
> I have a script that does SSH from one machine to the other both of
> which are running linux. The script does SSH in a loop and every few
> hours or so I see the following errors one followed by the other.
>
> Read from remote host xx.xx.xx.xx: Connection reset by peer
>
>
> Sometimes I also see the following error
>
>
> ssh_exchange_identification: Connection closed by remote host.
>

Sounds like a broken connection. Have you checked the remote host's logs?

[Hari]

On Jul 28, 1:37 am, Bill Marcum <marcumb...@bellsouth.net> wrote:
> On 2009-07-28, Hari <harish.chandra...@gmail.com> wrote:> All,

Yes, I did check the remote host's log there was nothing significant.
When the ssh_exchange_identification msg is seen. I see the following
in /var/log/auth.log

fatal: recv_rexec_state: ssh_msg_recv failed

I don't see any other messages logged for the Read from remote
host :Connection reset by peer logs.

Thanks.

[Moody]

On Jul 28, 6:03 pm, Hari <harish.chandra...@gmail.com> wrote:
> On Jul 28, 1:37 am, Bill Marcum <marcumb...@bellsouth.net> wrote:
>
> > On 2009-07-28, Hari <harish.chandra...@gmail.com> wrote:> All,
> > >   I have a script that does SSH from one machine to the other both of
> > > which are running linux. The script does SSH in a loop and every few
> > > hours or so I see the following errors one followed by the other.
>
> > > Read from remote host xx.xx.xx.xx: Connection reset by peer
>
> > > Sometimes I also see the following error
>
> > > ssh_exchange_identification: Connection closed by remote host.
>
> > Sounds like a broken connection. Have you checked the remote host's logs?
>
> Yes, I did check the remote host's log there was nothing significant.
> When the ssh_exchange_identification msg is seen. I see the following
> in /var/log/auth.log
>
> fatal: recv_rexec_state: ssh_msg_recv failed
>

Can you please check the network stability, what I suspect is that
your network gets congested during peak hours or there is massive
data transfer involved in-frequently causing communication being lost.
There is another suspected reason of the target or source host may
have gone out of processing resources as well

Try evaluating different things.

[Piotr KUCHARSKI]

Hari <harish.c...@gmail.com> wrote:
> The script does SSH in a loop and every few
> hours or so I see the following errors one followed by the other.
> Read from remote host xx.xx.xx.xx: Connection reset by peer
> Sometimes I also see the following error
> ssh_exchange_identification: Connection closed by remote host.

> Any ideas on why I am seeing these errors. Any suggestions/ideas/help
> is much appreciated.

Network errors. Can't really do anything about it short of getting
better connection between the two (or, in severe case, remote host
is *very* overloaded to the point of dropping connections; or even
under attack, but that's completely different problem).

p.

--
Beware of he who would deny you access to information, for in his
heart he dreams himself your master. -- Commissioner Pravin Lal