On 11/27/2014 09:06 AM, Diego wrote:
Hi all,
I'd like to share with you what I consider a bug.
I've generally noticed in my Linux experience that I get automatically
disconnected from an ssh session if the ssh host gets shutdown or rebooted
with the message:
Connection to x.y.w.z closed by remote host.
Connection to x.y.w.z closed.
Well this is because the machine is actually shut down or halted,
therefore all processes get killed regardless, this is not necessarily a
function of stopping the daemon
This doesn't seem to happen on my OSes built on core-image-minimal with
openssh support.
Moreover I noticed that if I stop the ssh service:
# /etc/init.d/sshd stop
my ssh connections don't get dropped, I can continue using ssh session like
nothing happened. I can even see the connection process still up and running:
# ps | grep ssh
1790 root 4568 S /usr/sbin/sshd
1848 root 4852 S sshd: root@pts/0
1886 root 2896 S grep ssh
# /etc/init.d/sshd stop
Stopping OpenBSD Secure Shell server: sshdstopped /usr/sbin/sshd (pid 1790)
.
# ps | grep ssh
1848 root 4852 S sshd: root@pts/0
1894 root 2892 S grep ssh
Isn't service termination supposed to stop all related connections at the same
time? Can anybody else reproduce (or not) this issue?
It may actually be designed to work this way, since the daemon spawns a
process for each login the daemon can be restarted on a headless or
server type machine and not loose the connection, based on googling, I
could not find this outright on the Openssh.com site.
It appears that the dropbear sshd also has the behavior.
So I would not call this a bug.
Sau!
Bests,
Diego
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