OSError: [Errno 99] Cannot assign requested address

Question

Trying to run jupyter notebook on a CentOS 7. It comes back with:

OSError: [Errno 99] Cannot assign requested address 

And the stack trace:

[user@desktop ~]$ jupyter notebook Traceback (most recent call last):   File "/home/use/anaconda3/bin/jupyter-notebook", line 6, in <module>     sys.exit(notebook.notebookapp.main())   File "/home/user/anaconda3/lib/python3.6/site-packages/jupyter_core/application.py", line 267, in launch_instance     return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)   File "/home/user/anaconda3/lib/python3.6/site-packages/traitlets/config/application.py", line 657, in launch_instance     app.initialize(argv)   File "<decorator-gen-7>", line 2, in initialize   File "/home/user/anaconda3/lib/python3.6/site-packages/traitlets/config/application.py", line 87, in catch_config_error     return method(app, *args, **kwargs)   File "/home/user/anaconda3/lib/python3.6/site-packages/notebook/notebookapp.py", line 1296, in initialize     self.init_webapp()   File "/home/user/anaconda3/lib/python3.6/site-packages/notebook/notebookapp.py", line 1120, in init_webapp     self.http_server.listen(port, self.ip)   File "/home/user/anaconda3/lib/python3.6/site-packages/tornado/tcpserver.py", line 142, in listen     sockets = bind_sockets(port, address=address)   File "/home/user/anaconda3/lib/python3.6/site-packages/tornado/netutil.py", line 197, in bind_sockets     sock.bind(sockaddr) OSError: [Errno 99] Cannot assign requested address 

Answer 1

jupyter notebook --ip=127.0.0.1 --port=8888 

I had to simply set the ip/port params. The issue was likely caused because the default ip/port that it was previously trying to assign was already taken!

Answer 2

In a remote VM, I solved the issue by

$ jupyter-notebook --ip=0.0.0.0 --port=8888 ...          Copy/paste this URL into your browser when you connect for the first time,     to login with a token:         http://0.0.0.0:8888/?token=1234567890abcdefghijklmnopqrstuvwxyz  (the token is for demo)      ... 

Note: do not assign the specific ip

then I can connect to jupyter notebook via:

http://your_vm_ip:8888/?token=1234567890abcdefghijklmnopqrstuvwxyz 

(replace 0.0.0.0 with your_vm_ip)