Python script triggered by UPM doesn't work properly

[eyeV]

Hi everybody.
I use x480 with 16.1.2.

I have simple .py script like this.
import pexpect
import exsh
exsh.clicmd ('create log message "Starting NSCBackup!"')
for i in range(1,10):
print(i)
p = pexpect.spawn('/exos/bin/ssh -r 2 USERNAME@172.20.1.' + str(i))
idx = p.expect(['password', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('SECRETPASS')
idx = p.expect(['sCore', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('create log message "Not so cold backuper"')
idx = p.expect(['sCore', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('save')
idx = p.expect(['(y/N)', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('y')
idx = p.expect(['sCore', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('scp2 vr "VR-Default" sCore' + str(i) + '.cfg USERNAME@172.20.1.10:sCore' + str(i) + '.cfg')
idx = p.expect(['password', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('SECRETPASS')
p.sendline('exit')Not so beautiful, but it works!

So... I can run it with "load script NSCB.py". It works properly.

Then I created and scheduled UPM profile like this.
create upm profile NSCB
load script NSCB.py
.
create upm timer NSCBtimer
configure upm timer NSCBtimer profile NSCB
configure upm timer NSCBtimer at 11 5 2015 23 50 0 every 86400And I run it:
run upm profile "NSCB" I see some log messages, but script stucked.
11/06/2015 15:55:19.94 Starting NSCBackup!
11/06/2015 15:55:19.54 Launched profile NSCB for the event user-request

Any suggestions?

[eyeV]

I'm running 16.1.2.14.

[eyeV]

Sorry for waiting... Something is going wrong.

I've created py script, but when I run it I have this.
Traceback (most recent call last):
File "/config/NSCB.py", line 2, in
import exos.api
File "/exos/tools/lib/python2.7/site-packages/exos/api/__init__.py", line 21, in
File "/exos/tools/lib/python2.7/site-packages/exos/api/ems.py", line 10, in
ImportError: No module named _exos_ext_ems
I've tried to import XOS api with "from exos import api" but...
Traceback (most recent call last):
File "/config/NSCB.py", line 2, in
from xos import api
ImportError: No module named xos
It's not clear for me... What am I doing wrong?

[Matthew_Helm]

I was able to create a test.py application/process that uses pexpect with /exos/bin/ssh similarly to your script and I used a UPM profile and timer to restart it every 5 minutes. It worked.

Here is the UPM configuration:

## Module upm configuration.
#
create upm profile test
disable cli prompt
restart process test

.
create upm timer test
configure upm timer test profile test
configure upm timer test after 1 every 300

...

And here is the py file for the process and the command to create it. (I assumed that the ssh targets were sub-tended EXOS switches and so I sent the "disable cli prompting" command to avoid unnecessary pexpect lines in the process script.)

#vi test.py

import pexpectimport exos.api
def exosCmd(cmd):
reply = exos.api.exec_cli([str(cmd)], ignore_errors=True)
return str(reply)

def logMsg(m):
exosCmd('create log message "{0}"'.format(m))

logMsg("Starting NSCBackup!")
p = pexpect.spawn('/exos/bin/ssh -r 2 admin@10.0.0.202')
idx = p.expect(['password', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('admin')
idx = p.expect(['x202', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('create log message "test test test"')
idx = p.expect(['x202', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('disable cli prompt')
idx = p.expect(['x202', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('save')
idx = p.expect(['x202', pexpect.EOF, pexpect.TIMEOUT])
p.sendline('exit')

#^wq!
...

The process was started with this line that I issued before starting the UPM timer:

create process test py test start auto

...

Hope this helps.

[eyeV]

Thank you for advice! I'm going to create similar proccess and give you feedback as soon as possible.

[Matthew_Helm]

So it looks like the purpose of this is to have a core switch ssh into downstream connected switches and save their configurations periodically right?

I'll take your script and attempt to make it into a python EXOS application process instead. I'll then test having a UPM process restart the py process. I'll let you know how it works out.

Let me know if I've misinterpreted what you want to do.

Thanks.