I'm trying to be a good citizen and make sure my notebook session is terminated immediately after running even if I'm not sitting at my machine.
Is there any code I can run in a notebook cell to achieve this?
A rather ugly but efficient solution might be
!kill $(ps aux | awk '{print $2}')
ps aux will give you a list of any process running in the machine, awk '{print $2}' will extract the PID of every process currently running and finally kill will stop them, sending a SIGTERM signal.
This will give you a message "Runtime disconnected" and the session will be closed, you can see it worked under "Runtime" > "Manage sessions".
You can see the available system aliases here
We have a way to do this correctly now:
from google.colab import runtime
runtime.unassign()
!pkill --oldest
!pkill is used to kill the program and --oldest is used to kill the oldest program
This might work give it a try.
!kill -9 -1
Related
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?
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
In my Python socket program, I sometimes need to interrupt it with Ctrl-C. When I do this, it does close the connection using socket.close().
However, when I try to reopen it I have to wait what seems like a minute before I can connect again. How does one correctly close a socket? Or is this intended?
Yes, it is intended. Here you can read detailed explanation. It is possible to override this behavior by setting SO_REUSEADDR option on a socket. For example:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
$ ps -fA | grep python
501 81211 12368 0 10:11PM ttys000 0:03.12
python -m SimpleHTTPServer
$ kill 81211
This happens because you trying to run service at the same port and there is an already running application.
it can happen because your service is not stopped in the process stack. you just have to kill those processes.
There is no need to install anything here is the one line command to kill all running python processes.
for Linux based OS:
Bash:
kill -9 $(ps -A | grep python | awk '{print $1}')
Fish:
kill -9 (ps -A | grep python | awk '{print $1}')
If you use a TCPServer, UDPServer or their subclasses in the socketserver module, you can set this class variable (before instantiating a server):
socketserver.TCPServer.allow_reuse_address = True
(via SocketServer.ThreadingTCPServer - Cannot bind to address after program restart )
This causes the init (constructor) to:
if self.allow_reuse_address:
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
Nothing worked for me except running a subprocess with this command, before calling HTTPServer(('', 443), myHandler):
kill -9 $(lsof -ti tcp:443)
Of course this is only for linux-like OS!
A simple solution that worked for me is to close the Terminal and restart it.
For Linux,
ps aux | grep python
This will show you the error. The process number (eg.35225) containing your python file is the error.
Now,
sudo kill -9 35225
This will kill the error process and your problem will be solved.
First of all find the python process ID using this command
ps -fA | grep python
You will get a pid number by naming of your python process on second column
Then kill the process using this command
kill -9 pid
run the command
fuser -k (port_number_you_are _trying_to_access)/TCP
example for flask: fuser -k 5000/tcp
Also, remember this error arises when you interput by ctrl+z. so to terminate use ctrl+c
I faced similar error at odoo server and resolved that with these simple following steps:
Paste following code in terminal
ps -fA | grep python
You will get a pid number. Now copy the pid number from second column of terminal output.
Then write as below
kill -9 pid
The terminal will restart and then the command
flask run
Will work fine!
Thank you
Do nothing just wait for a couple of minutes and it will get resolved. It happens due to the slow termination of some processes, and that's why it's not even showing in the running processes list.
I had the same problem (Err98 Address already in use) on a Raspberry Pi running python for a EV charging manager for a Tesla Wall Connector. The software had previously been fine but it stopped interrogating the solar inverter one day and I spent days thinking it was something I'd done in python. Turns out the root cause was the Wifi modem assigning a new dynamic IP to the solar inverter as as result of introducing a new smart TV into my home. I changed the python code to reflect the new IP address that I found from the wifi modem and bingo, the issue was fixed.
Got this error after I ran my code while programming a Pico W via Thonny. At the command line just do a socket.reset() to clear the issue.
>>> socket.reset()
The cleanest way to make the socket immediately reusable is to follow the recommendation to first shutdown the client end (socket) of a connection, and make sure the server's end shuts down last (through exception handling if needed).
This might well mean that the server end runs forever.
This is not a problem if that "forever" loop pauses execution, e.g. read from socket.
How you "break" that "forever" loop is up to you as server admin, as long as there are no clients (apart from obvious system level exceptions)
I tried the following code to settle the issue:
sudo lsof -t -i tcp:8000 | xargs kill -9
sudo pkill -9 python
try this command
In reference to this question I had asked, I can successfully run jobs using multiprocessing and I can see that all processors are being utilized.
How do I kill this job?
From terminal I run:
python my_multiprocessor_script.py
Then I hit Ctrl+C to kill.
However the job doesn't seem to be killed and I can see all the processors still in use.
I'm running Red Hat Enterprise Linux Server release 6.6.
You should be able to do something like this.
Original Author
kill -9 `ps -ef | grep my_multiprocessor_script.py | grep -v grep | awk '{print $2}'`
also take a look at Python Multiprocessing Kill Processes for more info
In my Python socket program, I sometimes need to interrupt it with Ctrl-C. When I do this, it does close the connection using socket.close().
However, when I try to reopen it I have to wait what seems like a minute before I can connect again. How does one correctly close a socket? Or is this intended?
Yes, it is intended. Here you can read detailed explanation. It is possible to override this behavior by setting SO_REUSEADDR option on a socket. For example:
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
$ ps -fA | grep python
501 81211 12368 0 10:11PM ttys000 0:03.12
python -m SimpleHTTPServer
$ kill 81211
This happens because you trying to run service at the same port and there is an already running application.
it can happen because your service is not stopped in the process stack. you just have to kill those processes.
There is no need to install anything here is the one line command to kill all running python processes.
for Linux based OS:
Bash:
kill -9 $(ps -A | grep python | awk '{print $1}')
Fish:
kill -9 (ps -A | grep python | awk '{print $1}')
If you use a TCPServer, UDPServer or their subclasses in the socketserver module, you can set this class variable (before instantiating a server):
socketserver.TCPServer.allow_reuse_address = True
(via SocketServer.ThreadingTCPServer - Cannot bind to address after program restart )
This causes the init (constructor) to:
if self.allow_reuse_address:
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
Nothing worked for me except running a subprocess with this command, before calling HTTPServer(('', 443), myHandler):
kill -9 $(lsof -ti tcp:443)
Of course this is only for linux-like OS!
A simple solution that worked for me is to close the Terminal and restart it.
For Linux,
ps aux | grep python
This will show you the error. The process number (eg.35225) containing your python file is the error.
Now,
sudo kill -9 35225
This will kill the error process and your problem will be solved.
First of all find the python process ID using this command
ps -fA | grep python
You will get a pid number by naming of your python process on second column
Then kill the process using this command
kill -9 pid
run the command
fuser -k (port_number_you_are _trying_to_access)/TCP
example for flask: fuser -k 5000/tcp
Also, remember this error arises when you interput by ctrl+z. so to terminate use ctrl+c
I faced similar error at odoo server and resolved that with these simple following steps:
Paste following code in terminal
ps -fA | grep python
You will get a pid number. Now copy the pid number from second column of terminal output.
Then write as below
kill -9 pid
The terminal will restart and then the command
flask run
Will work fine!
Thank you
Do nothing just wait for a couple of minutes and it will get resolved. It happens due to the slow termination of some processes, and that's why it's not even showing in the running processes list.
I had the same problem (Err98 Address already in use) on a Raspberry Pi running python for a EV charging manager for a Tesla Wall Connector. The software had previously been fine but it stopped interrogating the solar inverter one day and I spent days thinking it was something I'd done in python. Turns out the root cause was the Wifi modem assigning a new dynamic IP to the solar inverter as as result of introducing a new smart TV into my home. I changed the python code to reflect the new IP address that I found from the wifi modem and bingo, the issue was fixed.
Got this error after I ran my code while programming a Pico W via Thonny. At the command line just do a socket.reset() to clear the issue.
>>> socket.reset()
The cleanest way to make the socket immediately reusable is to follow the recommendation to first shutdown the client end (socket) of a connection, and make sure the server's end shuts down last (through exception handling if needed).
This might well mean that the server end runs forever.
This is not a problem if that "forever" loop pauses execution, e.g. read from socket.
How you "break" that "forever" loop is up to you as server admin, as long as there are no clients (apart from obvious system level exceptions)
I tried the following code to settle the issue:
sudo lsof -t -i tcp:8000 | xargs kill -9
sudo pkill -9 python
try this command