Python multiprocessing – catch SIGINT/SIGTERM and exit gracefully Question: I have two python scripts and I want them to communicate to each other. Specifically, I want script Communication.py to send an array to script Process.py if required by the latter. I’ve used module multiprocessing.Process and multiprocessing.Pipe to make it works. My code works, but I …
How to propagate SIGTERM to children created via subprocess Question: Given the following Python scripts: a.py: #!/usr/bin/env python3 # a.py import signal import subprocess import os def main(): print(‘Starting process {}’.format(os.getpid())) subprocess.check_call(‘./b.py’) if __name__ == ‘__main__’: main() b.py: #!/usr/bin/env python3 # b.py import signal import time import os def cleanup(signum, frame): print(‘Cleaning up…’) raise RuntimeError("Error") …
How to process SIGTERM signal gracefully? Question: Let’s assume we have such a trivial daemon written in python: def mainloop(): while True: # 1. do # 2. some # 3. important # 4. job # 5. sleep mainloop() and we daemonize it using start-stop-daemon which by default sends SIGTERM (TERM) signal on –stop. Let’s suppose …
