[Thinlinc-technical] RES: sshd error msg

Tue Jan 18 10:31:42 CET 2011

Good Morning !! 

I'm not included in the list of thinlink. Please, don't need to send more
emails to me about the Thinlink.

Thanks

  _____  

De: h zerbes [mailto:heze54 at gmail.com] 
Enviada em: terça-feira, 18 de janeiro de 2011 01:07
Para: Christian Nygaard
Cc: thinlinc-technical at lists.cendio.se
Assunto: Re: [Thinlinc-technical] sshd error msg

On 18/01/11 06:29, Christian Nygaard wrote: 

The recommended way is to run Thinlinc without Apparmor although less secure
it is more compatible. 
I've run into problems running for example evince with Apparmor on.

Thanks again, Christian!

I turned off apparmor using /etc/init.d/apparmor teardown and restarted the
vsmserver.
As soon as I succesfully connect via thinlinc from a Ubuntu 10.10 desktop to
the thinlinc server running Ubuntu 10.04 LTS desktop in a VMware virtual
machine, I get:

==> auth.log <==
Jan 18 13:58:57 srv205 sshd[2379]: Accepted password for guest from
172.27.26.15 port 50306 ssh2
Jan 18 13:58:57 srv205 sshd[2379]: pam_unix(sshd:session): session opened
for user guest by (uid=0)

==> vsmserver.log <==
2011-01-18 13:58:57 INFO vsmserver.session: User with uid 1001 (guest)
requested a new session

==> auth.log <==
Jan 18 13:58:58 srv205 sshd[2379]: pam_unix(sshd:session): session closed
for user guest
Jan 18 13:58:58 srv205 sshd[2495]: Accepted password for guest from
172.27.26.15 port 50308 ssh2
Jan 18 13:58:58 srv205 sshd[2495]: pam_unix(sshd:session): session opened
for user guest by (uid=0)

==> vsmserver.log <==
2011-01-18 13:58:58 INFO vsmserver: VSM Agent 127.0.0.1 successfully created
a new session for guest
==> auth.log <==
Jan 18 14:01:15 srv205 sshd[2617]: last message repeated 16 times
Jan 18 14:01:15 srv205 sshd[2939]: Accepted publickey for root from
172.27.26.15 port 50379 ssh2
Jan 18 14:01:15 srv205 sshd[2939]: pam_unix(sshd:session): session opened
for user root by (uid=0)
Jan 18 14:01:18 srv205 sshd[2617]: channel 11: open failed: connect failed:
Connection refused
Jan 18 14:02:19 srv205 sshd[2617]: last message repeated 25 times

==> syslog <==
Jan 18 13:59:31 srv205 kernel: [ 2074.089514] RPC: Registered udp transport
module.
Jan 18 13:59:31 srv205 kernel: [ 2074.089516] RPC: Registered tcp transport
module.
Jan 18 13:59:31 srv205 kernel: [ 2074.089518] RPC: Registered tcp NFSv4.1
backchannel transport module.

==> auth.log <==
Jan 18 13:59:32 srv205 sshd[2617]: channel 11: open failed: connect failed:
Connection refused

==> syslog <==
Jan 18 13:59:32 srv205 gnome-session[2691]: WARNING: Unable to determine
session: Unable to lookup session information for process '2691'

==> auth.log <==
Jan 18 14:00:01 srv205 sshd[2617]: last message repeated 11 times
Jan 18 14:00:01 srv205 CRON[2855]: pam_unix(cron:session): session opened
for user root by (uid=0)
Jan 18 14:00:01 srv205 CRON[2855]: pam_unix(cron:session): session closed
for user root

==> syslog <==
Jan 18 14:00:01 srv205 CRON[2856]: (root) CMD
(/opt/thinlinc/sbin/tl-collect-licensestats)

==> auth.log <==
Jan 18 14:00:03 srv205 sshd[2617]: channel 11: open failed: connect failed:
Connection refused

==> syslog <==
Jan 18 14:00:12 srv205 NetworkManager: <info>  Unmanaged Device found; state
CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889
<http://bugs.launchpad.net/bugs/191889> )

==> auth.log <==
Jan 18 14:00:34 srv205 sshd[2617]: last message repeated 14 times

==> syslog <==
Jan 18 14:00:12 srv205 NetworkManager: <info>  Unmanaged Device found; state
CONNECTED forced. (see http://bugs.launchpad.net/bugs/191889
<http://bugs.launchpad.net/bugs/191889> )
Jan 18 14:00:35 srv205 AptDaemon: INFO: Initializing daemon

==> vsmserver.log <==
2011-01-18 13:25:24 INFO vsmserver.license: License summary: 10 concurrent
users. Hard limit of 11 concurrent users. 
2011-01-18 13:25:24 INFO vsmserver.session: Loaded 0 sessions for 0 users
from file
2011-01-18 13:57:31 INFO vsmserver: Got SIGTERM, signaling process to quit
2011-01-18 13:57:31 INFO vsmserver: Terminating. Have a nice day!
2011-01-18 13:57:33 INFO vsmserver: VSM Server version 3.1.2 build 2751
started
2011-01-18 13:57:33 INFO vsmserver.license: Updating license data from disk
to memory
2011-01-18 13:57:33 INFO vsmserver.license: License summary: 10 concurrent
users. Hard limit of 11 concurrent users. 
2011-01-18 13:57:33 INFO vsmserver.session: Loaded 0 sessions for 0 users
from file
2011-01-18 13:58:57 INFO vsmserver.session: User with uid 1001 (guest)
requested a new session
2011-01-18 13:58:58 INFO vsmserver: VSM Agent 127.0.0.1 successfully created
a new session for guest

Any ideas where the

channel 11: open failed: connect failed: Connection refused

comes from every two seconds?

Regards,
heinz

Kind regards,
Christian

2011/1/17 h zerbes <heze54 at gmail.com <mailto:heze54 at gmail.com> >

Hello Christian,

I guess I left an important bit out in my mail: I can successfully connect
from the thinclient to the server and get the X11 display back, no problem.

tl-setup initially gave some warnings which I wrote down, then installed:

lsb-graphics-ia32
pyhton-ldap
apache2

for webmin:
perl5 
libnet-ssleay-perl libauthen-pam-perl libio-pty-perl apt-show-versions
libapt-pkg-perl 
download webmin.deb and install

and then run the thinlinc installer again. This time no error msg.

Hmm, apparmor is news to me, although I've been working with Linux for more
than 20 years! Wow... But it is loaded:

root at srv205:/var/log# apparmor_status 
apparmor module is loaded.
10 profiles are loaded.
10 profiles are in enforce mode.
   /sbin/dhclient3
   /usr/bin/evince
   /usr/bin/evince-previewer
   /usr/bin/evince-thumbnailer
   /usr/lib/NetworkManager/nm-dhcp-client.action
   /usr/lib/connman/scripts/dhclient-script
   /usr/lib/cups/backend/cups-pdf
   /usr/sbin/cupsd
   /usr/sbin/tcpdump
   /usr/share/gdm/guest-session/Xsession
0 profiles are in complain mode.
1 processes have profiles defined.
1 processes are in enforce mode :
   /usr/sbin/cupsd (7998) 
0 processes are in complain mode.
0 processes are unconfined but have a profile defined.

And ssh is allowed. 

Sorry for the confusion, thinlinc client works, but I was checking
/var/log/syslog to see if something complains when I noticed those error
msgs. 

Any suggestions?

Thanks,
heinz 

On 17/01/11 21:39, Christian Nygaard wrote: 

Hi!

Did the tl-setup succeed?
Have you tried manual ssh from the thinclient to the vsmagent?
Is Apparmor disabled? 
Is iptables allowing ssh?

Kind regards,
Christian

2011/1/17 h zerbes <heze54 at gmail.com <mailto:heze54 at gmail.com> >

Hello,

after installing thinlinc-3.1.2-servercd.iso on a patched Ubuntu 10.04
running
in an ESXi VM, I get tons of msgs in syslog:

Jan 16 23:32:57 srv205 sshd[27296]: channel 11: open failed: connect failed:
Connection refused
Jan 16 23:32:59 srv205 sshd[28291]: channel 11: open failed: connect failed:
Connection refused
Jan 16 23:33:00 srv205 sshd[28291]: channel 11: open failed: connect failed:
Connection refused
Jan 16 23:33:02 srv205 sshd[27296]: channel 11: open failed: connect failed:
Connection refused
Jan 16 23:33:02 srv205 sshd[27296]: channel 12: open failed: connect failed:
Connection refused
Jan 16 23:33:04 srv205 sshd[28291]: channel 11: open failed: connect failed:
Connection refused
Jan 16 23:33:05 srv205 sshd[28291]: channel 11: open failed: connect failed:
Connection refused

while connected with the thinlinc client (from a different Ubuntu 10.10
desktop).

Any ideas how to find out what channels 11 and 12 mean? There are no other
TCP
packets going between the two hosts than ssh.

TIA,
henry

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-- 
 Christian Nygaard, Sysadmin Room:   1:4115
 Department of Mathematics, 
 Uppsala University. 
 Phone:  +46  (0)18 - 471 32 77
 Mobile: +46 (0)704 - 91 50 22

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