When developing the telegram bot in python, I faced the problem of independently triggering notifications in the Ubuntu system.
Let's start from the beginning. For everyday notification, I use a library called "Schedule". I won't fully describe it in the code, but it looks something like this:
from multiprocessing import *
import schedule
def start_process():
Process(target=P_schedule.start_schedule, args=()).start()
class P_schedule():
def start_schedule():
schedule.every().day.at("19:00").do(P_schedule.send_message)
while True:
schedule.run_pending()
time.sleep(1)
def send_message():
bot.send_message(user_ID, 'Message Text')
There don't seem to be any errors here for correct operation. Then I loaded all this into the Ubuntu system and connected "systemd" to autorun with commands:
vim /etc/systemd/system/bot.service
[Unit]
Description=Awesome Bot
After=syslog.target
After=network.target
[Service]
Type=simple
User=bot
WorkingDirectory=/home/bot/tgbot
ExecStart=/usr/bin/python3 /home/bot/tgbot/bot.py
Restart=always
[Install]
WantedBy=multi-user.target
systemctl daemon-reload
systemctl enable bot
systemctl start bot
I restart "systemd" after making edits to the code with a command:
systemctl restart bot
The problem arose in the following, when I change the time of the notification, it starts coming at the time that I specified and at the time that was before, as I understand it, "systemd" somewhere in the cache stores the old time value. How can I update "systemd" to clear this very cache.
It helped to reboot the system with the command:
sudo systemctl reboot
When I run docker-compose up in my Docker project it fails with the following message:
Error starting userland proxy: listen tcp 0.0.0.0:3000: bind: address already in use
netstat -pna | grep 3000
shows this:
tcp 0 0 0.0.0.0:3000 0.0.0.0:* LISTEN -
I've already tried docker-compose down, but it doesn't help.
In your case it was some other process that was using the port and as indicated in the comments, sudo netstat -pna | grep 3000 helped you in solving the problem.
While in other cases (I myself encountered it many times) it mostly is the same container running at some other instance. In that case docker ps was very helpful as often I left the same containers running in other directories and then tried running again at other places, where same container names were used.
How docker ps helped me:
docker rm -f $(docker ps -aq) is a short command which I use to remove all containers.
Edit: Added how docker ps helped me.
This helped me:
docker-compose down # Stop container on current dir if there is a docker-compose.yml
docker rm -fv $(docker ps -aq) # Remove all containers
sudo lsof -i -P -n | grep <port number> # List who's using the port
and then:
kill -9 <process id> (macOS) or sudo kill <process id> (Linux).
Source: comment by user Rub21.
I had the same problem. I fixed this by stopping the Apache2 service on my host.
You can kill the process listening on that port easily with one command below :
kill -9 $(lsof -t -i tcp:<port#>)
ex :
kill -9 $(lsof -t -i tcp:<port#>)
or for ubuntu:
sudo kill -9 `sudo lsof -t -i:8000`
Man page for lsof : https://man7.org/linux/man-pages/man8/lsof.8.html
-9 is for hard kill without checking any deps.
(Not related, but might be useful if its PORT 5000 mystery) - the culprit process is due to Mac OS monterery.
The port 5000 is commonly used to serve local development servers. When updating to the latest macOS operating system, I was unable the docker to bind to port 5000, because it was already in use. (You may find a message along the lines of Port 5000 already in use.)
By running lsof -i :5000, I found out the process using the port was named ControlCenter, which is a native macOS application. If this is happening to you, even if you use brute force (and kill) the application, it will restart itself. In my laptop, lsof -i :5000 returns that Control Center is being used by process id 433. I could do killall -p 433, but macOS keeps restarting the process.
The process running on this port turns out to be an AirPlay server. You can deactivate it in
System Preferences › Sharing, and unchecking AirPlay Receiver to release port 5000.
I had same problem,
docker-compose down --rmi all (in the same directory where you run docker-compose up)
helps
UPD: CAUTION - this will also delete the local docker images you've pulled (from comment)
For Linux/Unix:
Simple search for linux utility using following command
netstat -nlp | grep 8888
It'll show processing running at this port, then kill that process using PID (look for a PID in row) of that process.
kill PID
In some cases it is critical to perform a more in-depth debugging to the problem before stopping a container or killing a process.
Consider following the checklist below:
1) Check you current docker compose environment
Run docker-compose ps. If port is in use by another container, stop it with docker-compose stop <service-name-in-compose-file> or remove it by replacing stop with rm.
2) Check the containers running outside your current workspace
Run docker ps to see list of all containers running under your host.
If you find the port is in use by another container, you can stop it with docker stop <container-id>.
(*) Because you're not under the scope of the origin compose environment - it is a good practice first to use docker inspect to gather more information about the container that you're about to stop.
3) Check if port is used by other processes running on the host
For example if the port is 6379 run:
$ sudo netstat -ltnp | grep ':6379'
tcp 0 0 127.0.0.1:6379 0.0.0.0:* LISTEN 915/redis-server 12
tcp6 0 0 ::1:6379 :::* LISTEN 915/redis-server 12
(*) You can also use the lsof command which is mainly used to retrieve information about files that are opened by various processes (I suggest running netstat before that).
So, In case of the output above the PID is 915. Now you can run:
$ ps j 915
PPID PID PGID SID TTY TPGID STAT UID TIME COMMAND
1 915 915 915 ? -1 Ssl 123 0:11 /usr/bin/redis-server 127.0.0.1:6379
And see the ID of the parent process (PPID) and the execution command.
You can also run: $ pstree -s <PID> to a visual display of the process and its related processes.
In our case we can see that the process probably is a daemon (PPID is 1) - In that case consider running: A) $ cat /proc/<PID>/status in order to get a more in-depth information about the process like the number of threads spawned by the process, its capabilities, etc'.
B) $ systemctl status <PID> in order to see the systemd unit that caused the creation of a specific process. If the service is not critical - you can stop and disable the service.
4) Restart Docker service
Run: sudo service docker restart.
5) You reached this point and..
Only if its not placing your system at risk - consider restarting the server.
In my case it was
Error starting userland proxy: listen tcp 0.0.0.0:9000: bind: address already in use
And all that I need is turn off debug listening in php storm
Most probably this is because you are already running a web server on your host OS, so it conflicts with the web server that Docker is attempting to start.
So try this one-liner before trying anything else:
sudo service apache2 stop; sudo service nginx stop; sudo nginx -s stop;
I had apache running on my ubuntu machine. I used this command to kill it!
sudo /etc/init.d/apache2 stop
I was getting the below error when i was trying to launch a new container -
listen tcp 0.0.0.0:8080: bind: address already in use.
To check which process is running on port 8080, run below command:
netstat -tulnp | grep 8080
i got the output below
[root#ip-112-x6x-2x-xxx.xxxxx.compute.internal (aws_main) ~]# netstat -tulnp | grep 8080 tcp 0 0 0.0.0.0:8080 0.0.0.0:* LISTEN **12749**/java [root#ip-112-x6x-2x-xxx.xxxxx.compute.internal (aws_main) ~]#
run
kill -9 12749
Then try to relaunch the container it should work
If redis server is started as a service, it will restart itself when you using kill -9 <process_id> or sudo kill -9 `sudo lsof -t -i:<port_number>` . In that case you will need to stop the redis service using following command.
sudo service redis-server stop
I upgraded my docker this afternoon and ran into the same problem. I tried restarting docker but no luck.
Finally, I had to restart my computer and it worked. Definitely a bug.
Check docker-compose.yml, it might be the case that the port is specified twice.
version: '3'
services:
registry:
image: mysql:5.7
ports:
- "3306:3306" <--- remove either this line or next
- "127.0.0.1:3306:3306"
Changing network_mode: "bridge" to "host" did it for me.
This with
version: '2.2'
services:
bind:
image: sameersbn/bind:latest
dns: 127.0.0.1
ports:
- 172.17.42.1:53:53/udp
- 172.17.42.1:10000:10000
volumes:
- "/srv/docker/bind:/data"
environment:
- 'ROOT_PASSWORD=secret'
network_mode: "host"
I ran into the same issue several times. Restarting docker seems to do the trick
A variation of #DmitrySandalov's answer: I had tomcat/java running on 8080, which needed to keep going. Looked at the docker-compose.yml file and altered the entry for 8080 to another of my choosing.
nginx:
build: nginx
ports:
#- '8080:80' <-- original entry
- '8880:80'
- '8443:443'
Worked perfectly. (The only wrinkle is the change will be wiped if I ever update the project, since it's coming from an external repo.)
At first, make sure which service you are running in your specific port. In your case, you are already using port number 3000.
netstat -aof | findstr :3000
now stop that process which is running on specific port
lsof -i tcp:3000
I resolve the issue by restarting Docker.
It makes more sense to change the port of the docker update instead of shutting down other services that use port 80.
Just a side note if you have the same issue and is with Windows:
In my case the process in my way is just grafana-server.exe. Because I first downloaded the binary version and double click the executable, and it now starts as a service by user SYSTEM which I cannot taskkill (no permission)
I have to go to "Service manager" of Windows and search for service "Grafana", and stop it. After that port 3000 is no longer occupied.
Hope that helps.
The one that was using the port 8888 was Jupiter and I had to change the configuration file of Jupiter notebook to run on another port.
to list who is using that specific port.
sudo lsof -i -P -n | grep 9
You can specify the port you want Jupyter to run uncommenting/editing the following line in ~/.jupyter/jupyter_notebook_config.py:
c.NotebookApp.port = 9999
In case you don't have a jupyter_notebook_config.py try running jupyter notebook --generate-config. See this for further details on Jupyter configuration.
Before it was running on :docker run -d --name oracle -p 1521:1521 -p 5500:5500 qa/oracle
I just changed the port to docker run -d --name oracle -p 1522:1522 -p 5500:5500 qa/oracle
it worked fine for me !
On my machine a PID was not being shown from this command netstat -tulpn for the in-use port (8080), so i could not kill it, killing the containers and restarting the computer did not work. So service docker restart command restarted docker for me (ubuntu) and the port was no longer in use and i am a happy chap and off to lunch.
maybe it is too rude, but works for me. restart docker service itself
sudo service docker restart
hope it works for you also!
I have run the container with another port, like... 8082 :-)
I came across this problem. My simple solution is to remove the mongodb from the system
Commands to remove mongodb in Ubuntu:
sudo apt-get purge mongodb mongodb-clients mongodb-server mongodb-dev
sudo apt-get purge mongodb-10gen
sudo apt-get autoremove
Let me add one more case, because I had the same error and none of the solutions listed so far works:
serv1:
...
networks:
privnet:
ipv4_address: 10.10.100.2
...
serv2:
...
# no IP assignment, no dependencies
networks:
privnet:
ipam:
driver: default
config:
- subnet: 10.10.100.0/24
depending on the init order, serv2 may get assigned the IP 10.10.100.2 before serv1 is started, so I just assign IPs manually for all containers to avoid the error. Maybe there are other more elegant ways.
I have the same problem and by stopping docker container it was resolved.
sudo docker container stop <container-name>
i solved with this sudo service redis-server stop
I created a python program, "test.py" and have saved it under /home/pi/. When I go to run it in the terminal using "python3 /home/pi/test.py" it runs properly and speaks "hello world". The code is shown below.
import os
import alsaaudio
m = alsaaudio.Mixer()
current_volume = m.getvolume()
m.setvolume(35)
os.system("espeak 'Hello World!'")
I want this program to start whenever my raspberry pi starts up. I tried to add this line in crontab but my raspberry pi doesn't execute the command. Does anyone know why my program won't execute?
#reboot python3 /home/pi/test.py
Here is an image of the syslog
can you try adding the full path to python3:
#reboot /usr/bin/python3 /home/pi/test.py
Also, regarding wanting to run the code on when the device boots - you can run your code as a service.
To do so create a .service file under /etc/systemd/system (for example my-code.service)
Enter the following inside the file
[Unit]
Description=My python service
After=network.target
[Service]
ExecStart=/usr/bin/python3 -u test.py
WorkingDirectory=/home/pi
[Install]
WantedBy=multi-user.target
Finally enable the service (in order for it to run on boot)
sudo systemctl enable my-code
If you want to run it independently you can also run
sudo systemctl start my-code
I have a client script which needs to get invoked at start up. The script runs fine if I start it manually using systemctl start dummy.service. The server script is running on another machine.
But if I reboot my machine it does not get start and when checked the status it shows as failed with result exit-code. When I start my machine and when linux is loading all the services before going into log in screen, It shows that failed to start dummy.service, Network is unreachable. What could be the problem exactly?
Here is my dummy.service code
path /lib/systemd/system/dummy.service
Description=Dummy Service
Wants=network-online.target
After=network.target network-online.target
Conflicts=getty#tty1.service
[Service]
Type=forking
ExecStart=/usr/bin/python3 /usr/bin/client.py
StandardInput=tty-force
[Install]
WantedBy=multi-user.target
And my python script in /usr/bin is
#!/usr/bin/python3
import socket
s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
s.connect(("192.168.1.105",1234))
msg=s.recv(1024)
print(msg.decode("utf-8"))
systemctl enable dummy.service
if you are not root user:
chmod 744 the_pythonscript.py
chmod 644 dummy.service
I'm using python fabric to deploy binaries to an ec2 server and am attempting to run them in background (a subshell).
All the fabric commands for performing local actions, putting files, and executing remote commands w/o elevated privileges work fine. The issue I run into is when I attempt to run the binary.
with cd("deploy"):
run('mkdir log')
sudo('iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080', user="root")
result = sudo('./dbserver &', user="root") # <---- This line
print result
if result.failed:
print "Running dbserver failed"
else:
print "DBServer now running server" # this gets printed despite the binary not running
After I login to the server and ps aux | grep dbserver nothing shows up. How can I get fabric to execute the binary? The same command ./dbserver & executed from the shell does exactly what I want it to. Thanks.
This is likey reated to TTY issues, and/or that you're attempting to background a process.
Both of these are discussed in the FAQ under these two headings:
http://www.fabfile.org/faq.html#init-scripts-don-t-work
http://www.fabfile.org/faq.html#why-can-t-i-run-programs-in-the-background-with-it-makes-fabric-hang
Try making the sudo like this:
sudo('nohup ./dbserver &', user=root, pty=False)