paramiko python module hangs at stdout.read() -


i using below code: 

import paramiko  def runsshcmd(hostname, username, password, cmd, timeout=none):               client = paramiko.sshclient()     client.set_missing_host_key_policy(paramiko.autoaddpolicy())     client.connect(hostname, username=username, password=password,             allow_agent=false, look_for_keys=false, timeout=timeout)      stdin, stdout, stderr = client.exec_command(cmd)     stdin.flush()     data = stdout.read()     print (data)     client.close()  runsshcmd("10.128.12.32", "root", "c0mput3gr!d", "ts_menu")

when comes stdout.read() , hangs... prints output after long time.

can please suggest if can done issue??

i see issue has been reported in :

https://bugs.python.org/issue24026

is there better module in python ssh connection , run commands ??

could related https://github.com/paramiko/paramiko/issues/109

below explanation of facing , how worked around it.

i experienced issue due stdout.channel.eof_received == 0

import paramiko client = paramiko.sshclient() client.set_missing_host_key_policy(paramiko.autoaddpolicy()) client.connect("1.1.1.1", username="root", password="pass") stdin, stdout, stderr = client.exec_command("service xxx start")

stdin, stdout , stderr staying open... 

>>> print stdin <paramiko.channelfile <paramiko.channel 3 (open) window=2097152 in-buffer=50 -> <paramiko.transport @ 0x17eff90l (cipher aes128-ctr, 128 bits) (active; 1 open channel(s))>>> >>> print stdout <paramiko.channelfile <paramiko.channel 3 (open) window=2097152 in-buffer=50 -> <paramiko.transport @ 0x17eff90l (cipher aes128-ctr, 128 bits) (active; 1 open channel(s))>>> >>> print stderr <paramiko.channelfile <paramiko.channel 3 (open) window=2097152 in-buffer=50 -> <paramiko.transport @ 0x17eff90l (cipher aes128-ctr, 128 bits) (active; 1 open channel(s))>>>

so eof not received...

>>> print stdin.channel.eof_received 0

usually receive true , can stdout.read(), safe use workaround (which works!): wait timeout, force stdout.channel.close() , stdout.read():

>>> timeout = 30 >>> import time >>> endtime = time.time() + timeout >>> while not stdout.channel.eof_received: ...     sleep(1) ...     if time.time() > endtime: ...         stdout.channel.close() ...         break >>> stdout.read() 'starting xxx: \n[  ok  ]\rprogram started . . .\n' >>>

btw use:

python 2.6.6 paramiko (1.15.2)

hope helps...


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