read_nonblocking error in pxssh

[jrpfinch]

I'm attempting to use the pxssh to execute commands on a remote
machine and do stuff with the output. Both machines are running SSH
Version Sun_SSH_1.0, protocol versions 1.5/2.0 and Intel Solaris 9.

I am hitting a problem with read_nonblocking in the pexpect module as
follows:

>>import pxssh
s=pxssh.pxssh()
s.login("myhost","root","mypass")

Trying command: ssh -q -l root gerard
Expect returned i=2
Expect returned i=1
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "pxssh.py", line 244, in login
if not self.synch_original_prompt():
File "pxssh.py", line 134, in synch_original_prompt
self.read_nonblocking(size=10000,timeout=10) # GAS: Clear out the
cache before getting the prompt
File "/opt/python2.5.1/lib/python2.5/site-packages/pexpect.py", line
824, in read_nonblocking
raise TIMEOUT ('Timeout exceeded in read_nonblocking().')
pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().

Running the ssh command from the shell yields:

bash-2.05# ssh -q -l root myhost
root@myhost's password:
Last login: Wed Jan 16 17:10:32 2008 from x.x.x.x
Sun Microsystems Inc. SunOS 5.9 Generic January 2003
Sun Microsystems Inc. SunOS 5.9 Generic January 2003
root@myhost:/ #

I would be grateful if anyone could make a suggestion as to where I go
next? Is read_nonblocking(), the correct method to be using here?
Are there any options in pxssh I need to explore (I've tried ssh -t,
but this means the password entry fails with raise ExceptionPxssh
('password refused')).

Many thanks

Jon

[Sean DiZazzo]

Just glanced at the docs, but it might be worth a shot...

try:

>import pxssh
s=pxssh.pxssh()
s.login("myhost","root","mypass", auto_prompt_reset=False)

Maybe???

Otherwise, I have used and modified this script with great success:

(ssh_session.py) http://www.koders.com/python/fidA430...B4EEE63CF.aspx

Good luck.

~Sean

On Jan 16, 9:24*am, jrpfinch <[e-mail]:

I'm attempting to use the pxssh to execute commands on a remote
machine and do stuff with the output. *Both machines are running SSH
Version Sun_SSH_1.0, protocol versions 1.5/2.0 and Intel Solaris 9.

I am hitting a problem with read_nonblocking in the pexpect module as
follows:

>import pxssh
s=pxssh.pxssh()
s.login("myhost","root","mypass")

Trying command: ssh -q -l root gerard
Expect returned i=2
Expect returned i=1
Traceback (most recent call last):
* File "<stdin>", line 1, in <module>
* File "pxssh.py", line 244, in login
* * if not self.synch_original_prompt():
* File "pxssh.py", line 134, in synch_original_prompt
* * self.read_nonblocking(size=10000,timeout=10) # GAS: Clear out the
cache before getting the prompt
* File "/opt/python2.5.1/lib/python2.5/site-packages/pexpect.py", line
824, in read_nonblocking
* * raise TIMEOUT ('Timeout exceeded in read_nonblocking().')
pexpect.TIMEOUT: Timeout exceeded in read_nonblocking().

Running the ssh command from the shell yields:

bash-2.05# ssh -q -l root myhost
root@myhost's password:
Last login: Wed Jan 16 17:10:32 2008 from x.x.x.x
Sun Microsystems Inc. * SunOS 5.9 * * * Generic January 2003
Sun Microsystems Inc. * SunOS 5.9 * * * Generic January 2003
root@myhost:/ #

I would be grateful if anyone could make a suggestion as to where I go
next? *Is read_nonblocking(), the correct method to be using here?
Are there any options in pxssh I need to explore (I've tried ssh -t,
but this means the password entry fails with raise ExceptionPxssh
('password refused')).

Many thanks

Jon

[kayvansylvan]

On Feb 1, 4:31 pm, Jinno <[e-mail]:

I don't know if anyone ever got back to you with a fix, but for me the
fix was really simple.

I just added a self.sendline() and a time.sleep(0.5) right before the
first read_nonblocking() call within synch_original_prompt

Thank you!!! That was exactly the right solution, and thank you very
much for the great explanation too.

---Kayvan