paramiko python module hangs at stdout.read()

Question

I am using the below code:

import paramiko

def runSshCmd(hostname, username, password, cmd, timeout=None):          
    client = paramiko.SSHClient()
            


        

Answer 1

I happen to come across this issue. But I kinda work around it by using "readline" instead "readlines".

For example:

client = paramiko.SSHClient()
client.connect(addr, port, username, password)
stdin, stdout, stderr = client.exec_command(cmd)

while True:
    print(stdout.readline())
    if stdout.channel.exit_status_ready():
        break

So it will print every line immediately and no more hanging, also exit_status_ready() will make sure the loop breaks when stdout has stopped/exited.