Paramiko ssh output not getting output as expected

Question

Below is the code:

client = paramiko.SSHClient()
client.load_system_host_keys()
client.set_missing_host_key_policy(paramiko.AutoAddPolicy())
client.connect("1.1.1.1",  username=username, password=password)
stdin, stdout, stderr = client.exec_command("set -units GB")
stdin, stdout, stderr = client.exec_command("vol show -vserver vs1 -volume test_volume -fields size")
return stdout.read()

Output getting from code:

 vserver                          volume             size
 ------------------------  ------------------         ------
 vs1                       test_volume               1.07TB

Output from device:

 test01::> set -units GB

 test01::> vol show -vserver vs1 -volume test_volume -fields size

 vserver                          volume             size
 ------------------------  ------------------         ------
 vs1                       test_volume               1100GB

Looks like paramiko not executing commands in same channel. How do i get value "1100GB" in python script also?

Hint: Both command should execute in same session so that i will get expected output like in device

pynexj · Accepted Answer · 2018-03-04 12:31:23Z

2

When you run client.exec_command(), the commands are actually running in different exec sessions, so your call to set -units GB isn't actually active for your second call to vol show -vserver vs1 -volume test_volume -fields size

You could try separating the commands with a semi-colon and running them in one session

stdin, stdout, stderr = client.exec_command(
    "set -units GB; vol show -vserver vs1 -volume test_volume -fields size")

edited Mar 4, 2018 at 12:31

pynexj

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answered Mar 4, 2018 at 11:56

Alan Kavanagh

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