Facing error "Address already in use" while running locust

Question

While trying to run a locust file and convert the data in csv I'm facing this error in java with the dummy locustfile.py. I have tried editing the command and everything but nothing seems to be helping out. PFB ERROR:

locust -f /home/sonali/locustapitest/src/main/resources/performance/locust-master.py --master --no-web --csv=/home/sonali/locustapitest/target/csvlocustsresults/performanceResults --expect-slaves=1 -c 1 -r 1 -t1m
[2020-07-07 12:26:25,897] sonali-Latitude-3490/ERROR/stderr: Traceback (most recent call last):
[2020-07-07 12:26:25,897] sonali-Latitude-3490/ERROR/stderr: File "/home/sonali/.local/bin/locust", line 8, in <module>
[2020-07-07 12:26:25,897] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,897] sonali-Latitude-3490/ERROR/stderr: sys.exit(main())
[2020-07-07 12:26:25,897] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,897] sonali-Latitude-3490/ERROR/stderr: File "/home/sonali/.local/lib/python3.6/site-packages/locust/main.py", line 503, in main
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: runners.locust_runner = MasterLocustRunner(locust_classes, options)
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: File "/home/sonali/.local/lib/python3.6/site-packages/locust/runners.py", line 320, in __init__
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: self.server = rpc.Server(self.master_bind_host, self.master_bind_port)
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: File "/home/sonali/.local/lib/python3.6/site-packages/locust/rpc/zmqrpc.py", line 41, in __init__
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: self.socket.bind("tcp://%s:%i" % (host, port))
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: 
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: File "zmq/backend/cython/socket.pyx", line 550, in zmq.backend.cython.socket.Socket.bind
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: File "zmq/backend/cython/checkrc.pxd", line 26, in zmq.backend.cython.checkrc._check_rc
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: zmq.error
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: .
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: ZMQError
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: :
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr: Address already in use
[2020-07-07 12:26:25,898] sonali-Latitude-3490/ERROR/stderr:

seems like you already have the address and port used by something else. — ewokx, Jul 07 '20 at 07:06
yes, I killed the port and restart, it is working fine now. Thanks!! — Sayen, Jul 07 '20 at 08:16

score 1 · Accepted Answer · answered Jul 07 '20 at 07:20

1

First Check that the address and file you are trying to change is not opened or used in another application.

Then try with killing the port number,your server is running on.

answered Jul 07 '20 at 07:20

divyanshu gupta

127
1
3
14

score 1 · Answer 2 · answered Mar 10 '21 at 17:31

1

This problem can be solved by killing the process holding the port as mentioned above. I follow this method to find the pid of the process.

lsof -i tcp:8089

Then I use the below command to kill the process.

kill -9 <pid>

answered Mar 10 '21 at 17:31

Rajib Hossen

128
10

Facing error "Address already in use" while running locust

2 Answers2