Hello minds of stackoverflow,
I've run into a perplexing bug. I have a python script that creates a new thread that ssh's into a remote machine and starts a process. However, this process does not return on its own (and I want it to keep running throughout the duration of my script). In order to force the thread to return, at the end of my script I ssh into the machine again and kill -9 the process. This is working well, expect for the fact that it breaks the terminal.
To start the thread I run the following code:
t = threading.Thread(target=run_vUE_rfal, args=(vAP.IP, vUE.IP)) t.start()
The function run_vUE_rfal is as follows:
cmd = "sudo ssh -ti ~/.ssh/my_key.pem [email protected]%s 'sudo /opt/company_name/rfal/bin/vUE-rfal -l 3 -m -d %s -i %s'" % (vUE_IP, vAP_IP, vUE_IP) output = commands.getstatusoutput(cmd) return
It seems when the command is run, it somehow breaks my terminal. It is broken in that instead of creating a new line for each print, it appends the WIDTH of my terminal in whitespace to the end of each line and prints it as seemingly one long string. Also, I am unable to see my keyboard input to that terminal, but it still successfully read. My terminal looks something like this:
normal formatted output normal formatted output running vUE-rfal print1 print2 print3_extra_long print4
If I replace the body of the run_vUE_rfal function with some simple prints, the terminal does not break. I have many other ssh's and telnets in this script that work fine. However, this is the only one I'm running in a separate thread as it is the only one that does not return. I need to maintain the ability to close the process of the remote machine when my script is finished.
Any explanations to the cause and idea for a fix are much appreciated.
Thanks in advance.