On Wed, Aug 7, 2013 at 3:08 PM, Ole Tange
<address@hidden> wrote:
On Wed, Aug 7, 2013 at 3:29 PM, Zhi Shen <
address@hidden> wrote:
> After upgrading to "20130722" from "20130422", we are unable to execute
> remote commands to servers running SunOS. Hope someone can help.
$ uname -a
SunOS solaris 5.10 Generic_125100-08 sun4u sparc SUNW,Ultra-5_10
I have no problem when running from a GNU/Linux system to the SunOS
5.10 machine:
$ </dev/null ssh -tt solaris uptime
7:40pm up 100 day(s), 7:50, 3 users, load average: 0.25, 0.26, 0.21
I have no problem when running from a GNU/Linux system to the SunOS
5.10 machine:
$ </dev/null ssh -tt redhat uptime
tcgetattr: No such device or address
14:04:39 up 15 days, 14:18, 6 users, load average: 0.17, 0.85, 0.74
(The tcgetattr error is a known situation, and GNU Parallel deals with that).
But I can reproduce the problem when running FROM the SunOS machine TO
a SunOS machine:
$ </dev/null ssh -tt solaris uptime
tcgetattr: No such device or address
Connection to solaris closed.
I reckon it is due to the version of ssh/ssh-server:
$ ssh -V
Sun_SSH_1.1, SSH protocols 1.5/2.0, OpenSSL 0x009070df
$ telnet solaris 22
Trying 192.168.10.8...
Connected to solaris.polarhome.com.
Escape character is '^]'.
SSH-2.0-Sun_SSH_1.1
The 'ssh -tt' is needed so that Ctrl-C is transferred to kill off the
command running remote.
Try this:
ps -edalf | grep [s]leep | wc -l # This should give 0
ssh -tt solaris sleep 1000 < /dev/null &
sleep 3;
ps -edalf | grep [s]leep | wc -l # This should give 2
kill $! # kill the ssh - This should kill the remote sleep
ps -edalf | grep [s]leep | wc -l # This should give 0
Now try without -tt:
ps -edalf | grep [s]leep | wc -l # This should give 0
ssh solaris sleep 1000 < /dev/null &
sleep 3;
ps -edalf | grep [s]leep | wc -l # This should give 2 - the sleep and the ssh
kill $! # kill the ssh - This should kill the remote sleep
ps -edalf | grep [s]leep | wc -l # This should give 0 - but it gives 1
because the sleep is not killed.
So the essence seems to be:
ssh -tt works fine from SunOS 5.10 to not-SunOS 5.10.
ssh -tt works fine from not-SunOS 5.10 to SunOS 5.10.
ssh -tt fails from SunOS 5.10 to SunOS 5.10.
So:
ssh -tt works fine from SunOS 5.10 XOR to SunOS 5.10.
The best option to fix this is to find a way to get the
Sun_SSH-server/client combo to work. I don't have a lot contacts in
the SunOS world, so I will be relying you to help me out here.
A less preferable option is to check if the client and server runs
Sun_SSH and if so revert to the old ssh-method that does not transfer
Ctrl-C. It is reasonably easy to see if the ssh-client is Sun_SSH (ssh
-V), the remote can probably be detected with ssh -v (debug1: Remote
protocol version 2.0, remote software version Sun_SSH_1.1).
Zhi Shen: can you help with the first option?
/Ole
redhat$ ssh -V
OpenSSH_4.3p2, OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008
redhat$ telnet solaris 22
Trying 10.10.20.162...
Connected to solaris.
Escape character is '^]'.
SSH-2.0-OpenSSH_4.6
redhat$ ./test.sh
0
tcgetattr: Inappropriate ioctl for device
1
Killed by signal 15.
0
0
stty: : Invalid argument
1
Killed by signal 15.
0
solaris$ ps -ef | grep [s]leep
user 20744 1 0 16:03:20 ? 0:00 sleep 2000
redhat$ cat test.sh
#!/bin/bash
ps -edalf | grep [s]leep | wc -l # This should give 0
ssh -tt solaris sleep 1000 < /dev/null &
sleep 3;
ps -edalf | grep [s]leep | wc -l # This should give 2
kill $! # kill the ssh - This should kill the remote sleep
ps -edalf | grep [s]leep | wc -l # This should give 0
echo
ps -edalf | grep [s]leep | wc -l # This should give 0
ssh solaris sleep 2000 < /dev/null &
sleep 3;
ps -edalf | grep [s]leep | wc -l # This should give 2 - the sleep and the ssh
kill $! # kill the ssh - This should kill the remote sleep
ps -edalf | grep [s]leep | wc -l # This should give 0 - but it gives 1