On centos have a process that runs python script which parses nginx logs using pygtail
After killing such process either with ctrl+c or kill command. Process halt to exist: ps aux | grep python doesnt show it. But after some time ~5 min, process is resurrected. Who is the necromancer which brings killed process back to life? and why? And how can I prevent this?
Related
I run ffmpeg from python script and need to shutdown recording on demand.
In Linux I just send SIGTERM. But in Windows as I understand SIGTERM replaced by SIGKILL so records needs to be remixed to play properly.
After googling I found that I should use CTRL_BREAK_EVENT but this signal terminate my parent script too.
What should I use?
I daemonized a python script using the daemonize python library, but now I cannot find the daemon that it spawned. I want to find the daemon and kill it to make some changes to the script.
I used the following to daemonize:
pidfile='/tmp/filename.pid'
daemon = Daemonize(app='filename',pid=pidfile, action=main)
print("daemon started")
daemon.start()
Open a terminal window and try the following:
ps ax | grep <ScriptThatStartedTheDaemon>.py
It should return the PID and the name of the process. Once you have the PID, do:
kill <pid>
Depending on how many times you've run your script, you may have multiple daemons running, in which case you'd want to kill all of them.
To make sure the process was terminated, run the first line of code again. The process with the PID that you killed shouldn't show up if it was successfully terminated.
I am trying out a python tutorial on the raspberry pi, and have found that more often than not, CTRL+C, or selecting shell > interrupt execution from the menu, will not stop a running script.
I do get a warning when I close the entire window: your program is still running, do you want to kill it?, but it looks like the script even runs when the window is closed, because the cursor changes into an hourglass for all python windows.
How can I force stop a python script on raspberry?
Try executing the command ps -ax | grep python in command line to find the process id of your script. Once you find that, kill that process using this command sudo kill <process_id>
So im using ruby on rails in windows (i hear you all spitting your coffee onto the screen), its only a short term thing. (using ubuntu at home) So i tried to fire up webrick this afternoon and i get the error message
TCPServer Error, only one usage of each socket address is normally permitted
So it seems as if port 3000 is still running from last week? My question is how do i kill the process from the Windows command line. normally i have to press ctrl and pause/break in windows as ctrl c is not working which is only killing the batch process it seems..
Any solutions welcomed
Edit
So it seems as if
tasklist
will give me the list of processes, but where do i find the process for running the webrick server?
ruby.exe is not listed as a running process
Try using netstat -a -o -n to determine the pid of the process running on port 3000. Then you should be able to use taskkill /pid #### to kill whatever process is running on that port.
Probably not the most graceful way to do it, but I think it should work.
EDIT
You'll probably have to also use the /F flag to force-kill the process. I just tried it on my local machine, and that worked fine.
Go into rails_project\tmp\pids and delete the .pid file in there.
run:
rails server
I am running a python process (through Django's manage.py) that will take about 6 days to complete. I would start it through an SSH tunnel, but that would require me to keep my Terminal window running and not let my computer fall asleep so the connection stays intact.
While the process is running, it reports the percentage on a single line (by replacing the line over and over again).
How can I start the process and be able to disconnect from SSH, but still be able to check on its progress when I reconnect?
use GNU Screen, your life will be so much more beautiful when you could load/reload your working session of terminals anytime you want --- they never die, and yet they ain't no zombies.
This is not really a Python question, rather an OS question.
So what you can do in linux is run your process with no hang up.
tmp.py
import time
for i in range(10):
print i
time.sleep(1)
No you can run it like so:
sudo nohup python -u tmp.py >> output &
The output will be placed in this file.
Then you can watch the output comming to the file by doing
tail -f output