Python script crashed after execution

General
1

I have a python script that runs in a docker container. The script executes properly but after the execution the container crashed. In order to avoid the crashing I copied the following script from another question:

import signal
import time

class GracefulKiller:
  kill_now = False
  def __init__(self):
    signal.signal(signal.SIGINT, self.exit_gracefully)
    signal.signal(signal.SIGTERM, self.exit_gracefully)

  def exit_gracefully(self,signum, frame):
    self.kill_now = True

if __name__ == '__main__':
  killer = GracefulKiller()
  while True:
    time.sleep(1)
    print("doing something in a loop ...")
    if killer.kill_now:
      break

  print("End of the program. I was killed gracefully")

I would replace the line with “do something in a loop” with my actualy code later but I kept it for testing purposes. The “do something in a loop” is printed multiple times before it says it was killed gracefully but right after it crashes again. I want the actual code to be executed only once and then gracefully end the script without crashing. What should I do?

Error message:

2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT doing something in a loop ...
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT End of the program. I was killed gracefully
2017-06-15 14:11:55 [APP/PROC/WEB/0] OUT Exit status 0
2017-06-15 14:11:55 [API/1] OUT Process has crashed with type: "web"
2017-06-15 14:11:55 [API/1] OUT App instance exited with guid 2e34ae4a-648a-4284-83aa-bf44f284ccf5 payload: {"instance"=>"", "index"=>0, "reason"=>"CRASHED", "exit_description"=>"2 error(s) occurred:\n\n* 1 error(s) occurred:\n\n* Exited with status 4\n* 2 error(s) occurred:\n\n* cancelled\n* cancelled", "crash_count"=>1, "crash_timestamp"=>1497528715620049488, "version"=>"1c721e51-4ab8-4aa6-b1fe-f5654cd83f2c"}
2017-06-15 14:11:55 [CELL/0] OUT Destroying container
2

your code looks to be not necessary. why not directly execute your python payload?

4

This code is just an example because my actual code is too complicated.

5

but why do you need this “while everything good”-loop?