[plug] Looking for assistance with a recent Debian upgrade

[Joe Aquilina]

Ben

Thanks for that, and here goes:

We have two Debian systems here, along with a bunch of Kubuntu and 
Windows systems. Early last week I upgraded the second of our Debian 
systems from stretch to buster. A few days earlier, I had upgraded the 
other Debian system, also from stretch to buster. That first upgrade 
went fine and everything is working as expected.

However the second (of course the more important system) did not upgrade 
correctly. It is mostly ok, but I am unable to ssh in to that machine. 
When I try to, I get this:

packet_write_wait: Connection to 10.0.2.1 port 22: Broken pipe

Searching on the net suggested I try adding ServerAliveInterval and 
ServerAliveCountMax into the sshd_config file - no luck there.

I have tried removing (and purging) openssh again with no luck.

I have also tried disabling ufw in case there problem was there, no luck.

Stopping ssh and sshd services and installing dropbear allows me to 
login to the machine, and I can perform normal file operations. However, 
this machine collects and distributes our emails for all users on our 
LAN and the other machines can't access the machine. There is another 
(off-site) Debian machine that does an important overnight folder sync 
which it is currently unable to do as it can't ssh in.

My Linux/Debian knowledge is obviously pretty limited, and I am not sure 
what to try next.

What else can I provide that might help me solve this?

Sorry to be a bit longwinded and possibly not precise enough in my 
description of the problem. Thanks in advance for any suggestions, 
advice or assistance.

Cheers.

Joe Aquilina

On 17/12/19 3:55 pm, Benjamin wrote:
> Hi Joe,
>
> Yep, sounds good to me...
> ~ B
> (PLUG President)
>
> On Tue, Dec 17, 2019 at 2:57 PM Joe Aquilina <joe at chem.com.au 
> <mailto:joe at chem.com.au>> wrote:
>
>     Hello. I have just subscribed to this list with this address after
>     being
>     a long time lurker using my home email address.
>
>     I am looking for technical assistance after a not quite successful
>     recent Debian upgrade (from stretch to buster). Is it appropriate
>     for me
>     to do so here? My Linux knowledge is still pretty limited and I
>     have not
>     been able to find a solution to the problem through extensive
>     searches
>     on the internet.
>
>     If that is a reasonable request, I will detail the problem, and
>     what I
>     have tried to do to fix it, in a separate email.
>
>     Thanks in advance.
>
>     Joe Aquilina
>
>     -- 
>     Joe Aquilina
>     Central Chemical Consulting Pty Ltd
>     PO Box 2546 Malaga WA 6944 Australia
>     1/11 Narloo St Malaga 6090 Australia
>     Tel: +61  8 9248 2739  Fax: +61  8 9248 2749
>     joe at chem.com.au <mailto:joe at chem.com.au> www.chem.com.au
>     <http://www.chem.com.au>
>
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>

-- 
Joe Aquilina
Central Chemical Consulting Pty Ltd
PO Box 2546 Malaga WA 6944 Australia
1/11 Narloo St Malaga 6090 Australia
Tel: +61  8 9248 2739  Fax: +61  8 9248 2749
joe at chem.com.au  www.chem.com.au

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