ValueError: '' does not appear to be an IPv4 or IPv6 address

[lppeng]

might be related to #3754

I'm running jupyter notebook on an EMR cluster

$ jupyter notebook --version
5.7.0
$ cat /etc/hosts
127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4
::1 localhost6 localhost6.localdomain6

[omegahh]

I got the same error when I upgraded jupyterlab to 0.34.11, and finally found that it's a notebook problem.
I upgraded jupyterlab by

sudo -H pip install -U --force-reinstall jupyterlab

It would upgrade and reinstall all required packages by jupyterlab thus including notebook.

Actually, I had three tracebacked errors when running jupyter lab

Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/traitlets/traitlets.py", line 528, in get
value = obj._trait_values[self.name]
KeyError: 'allow_remote_access'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 869, in _default_allow_remote
addr = ipaddress.ip_address(self.ip)
File "/usr/lib/python3.6/ipaddress.py", line 54, in ip_address
address)
ValueError: '' does not appear to be an IPv4 or IPv6 address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/bin/jupyter-lab", line 11, in
sys.exit(main())
File "/usr/local/lib/python3.6/dist-packages/jupyter_core/application.py", line 266, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py", line 657, in launch_instance
app.initialize(argv)
File "", line 2, in initialize
File "/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py", line 87, in catch_config_error
return method(app, *args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 1629, in initialize
self.init_webapp()
File "/usr/local/lib/python3.6/dist-packages/jupyterlab/labapp.py", line 202, in init_webapp
super().init_webapp(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 1379, in init_webapp
self.jinja_environment_options,
File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 158, in init
default_url, settings_overrides, jinja_env_options)
File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 251, in init_settings
allow_remote_access=jupyter_app.allow_remote_access,
File "/usr/local/lib/python3.6/dist-packages/traitlets/traitlets.py", line 556, in get
return self.get(obj, cls)
File "/usr/local/lib/python3.6/dist-packages/traitlets/traitlets.py", line 535, in get
value = self._validate(obj, dynamic_default())
File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 872, in _default_allow_remote
for info in socket.getaddrinfo(self.ip, self.port, 0, socket.SOCK_STREAM):
File "/usr/lib/python3.6/socket.py", line 745, in getaddrinfo
for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

It seems like all errors related to notebook.

System info:

Ubuntu 16.04.5 LTS
python 3.6.6
jupyterlab 0.34.11
notebook 5.7.0

BTW, I also upgraded jupyterlab at same way in my MacBook Pro (which installed python 3.6.5), it works fine!

[lppeng]

Pretty sure this is a problem with the 5.7.0 release. Downgrading notebook to 5.6.0 worked for me.

pip uninstall notebook
pip install notebook==5.6.0

[batmorell]

It seems the error appears when you have

c.NotebookApp.ip = '*'

into your jupyter_notebook_config.py.

Replacing * by 0.0.0.0 worked for me.

c.NotebookApp.ip = '0.0.0.0'

[raabf]

Can confirm the described problem and @batmorell ‘s fix.
This is probably a result of #3767 (and this did came from #3754).

I am not sure if it is intended that c.NotebookApp.ip = '*' is not working any more, but documentation still says that is is valid (I am not sure if this are all places of the documentation):

notebook/docs/source/public_server.rst

Lines 215 to 216 in 775cb20

	# Set ip to '*' to bind on all interfaces (ips) for the public server
	c.NotebookApp.ip = '*'

notebook/docs/source/public_server.rst

Lines 254 to 255 in 775cb20

	# Set ip to '*' to bind on all interfaces (ips) for the public server
	c.NotebookApp.ip = '*'

[angerson]

This briefly broke TensorFlow's Release + Nightly CI, and was fixed with @batmorell's suggestion in tensorflow/tensorflow#22451. Thanks!

[hzz4j]

• When I run jupyter notebook in the AWS E2,it also has error as follow:

ubuntu@ip-172-31-48-131:~$ jupyter notebook --no-browser --port=8888
[I 00:41:44.556 NotebookApp] Writing notebook server cookie secret to /run/user/1000/jupyter/note
book_cookie_secret
Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/traitlets/traitlets.py", line 528, in get
    value = obj._trait_values[self.name]
KeyError: 'allow_remote_access'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 869, in _default_al
low_remote
    addr = ipaddress.ip_address(self.ip)
  File "/usr/lib/python3.6/ipaddress.py", line 54, in ip_address
    address)
ValueError: '' does not appear to be an IPv4 or IPv6 address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/local/bin/jupyter-notebook", line 11, in <module>
    sys.exit(main())
  File "/usr/local/lib/python3.6/dist-packages/jupyter_core/application.py", line 266, in launch_
instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py", line 657, in lau
nch_instance
    app.initialize(argv)
  File "<decorator-gen-7>", line 2, in initialize
  File "/usr/local/lib/python3.6/dist-packages/traitlets/config/application.py", line 87, in catc
h_config_error
    return method(app, *args, **kwargs)
  File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 1629, in initialize

    self.init_webapp()
  File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 1379, in init_webap
p
    self.jinja_environment_options,
  File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 158, in __init__
    default_url, settings_overrides, jinja_env_options)
  File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 251, in init_settin
gs
    allow_remote_access=jupyter_app.allow_remote_access,
  File "/usr/local/lib/python3.6/dist-packages/traitlets/traitlets.py", line 556, in __get__
    return self.get(obj, cls)
  File "/usr/local/lib/python3.6/dist-packages/traitlets/traitlets.py", line 535, in get
    value = self._validate(obj, dynamic_default())
  File "/usr/local/lib/python3.6/dist-packages/notebook/notebookapp.py", line 872, in _default_al
low_remote
    for info in socket.getaddrinfo(self.ip, self.port, 0, socket.SOCK_STREAM):
  File "/usr/lib/python3.6/socket.py", line 745, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

• My system info

Distributor ID: Ubuntu
Description:    Ubuntu 18.04.1 LTS
Release:        18.04
Codename:       bionic

• My jupyter_notebook_config.py file which at ~/.jupyter/jupyter_notebook_config.py

c = get_config()  # Get the config object.
c.NotebookApp.certfile = u'/home/ubuntu/ssl/cert.pem' # path to the certificate we generated
c.NotebookApp.keyfile = u'/home/ubuntu/ssl/cert.key' # path to the certificate key we generated
c.NotebookApp.ip = '*'  # Serve notebooks locally.
c.NotebookApp.open_browser = False  # Do not open a browser window by default when using notebooks.
c.NotebookApp.password = 'sha1:fc216:3a35a98ed980b9...'  

• Solvetion: after replacing * by 0.0.0.0 ,everything works.

//at ~/.jupyter/jupyter_notebook_config.py
//change c.NotebookApp.ip = '*' to
c.NotebookApp.ip = '0.0.0.0'

[daf]

Another workaround while leaving c.NotebookApp.ip='*' is to also set c.NotebookApp.allow_remote_access=True.

Would the devs be open to a short-circuit in NotebookApp._default_allow_remote checking for a blank self.ip (the '*' is stripped in NotebookApp.valdate_ip [sic]) and returning True before checking things with the socket/ipaddress stuff? By the documentation, the '*' value is meant for public server use.

[takluyver]

'*' is getting converted to '' by this code:

notebook/notebook/notebookapp.py

Lines 660 to 665 in 04a686d

	@validate('ip')
	def _valdate_ip(self, proposal):
	value = proposal['value']
	if value == u'*':
	value = u''
	return value

PRs welcome to special case the empty string in the code checking for allow_remote_access.

[buoyancy99]

'0.0.0.0' would break ipv6. For ipv6 please use '::' instead
Hope this will be helpful to those who are using ipv6

[Dylan-Cunningham]

You could even simply run your command with the change:

docker run -p 8888:8888 [container name] jupyter notebook --ip='0.0.0.0' --port=8888 --no-browser --allow-root

Notice I change --ip='*' to --ip='0.0.0.0'

[AbhimanyuAryan]

Hi I have changed it to 0.0.0.0 it's still not working

[nb_conda_kernels] enabled, 1 kernels found
Traceback (most recent call last):
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/traitlets/traitlets.py", line 528, in get
    value = obj._trait_values[self.name]
KeyError: 'allow_remote_access'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/notebook/notebookapp.py", line 864, in _default_allow_remote
    addr = ipaddress.ip_address(self.ip)
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/ipaddress.py", line 54, in ip_address
    address)
ValueError: '' does not appear to be an IPv4 or IPv6 address

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/anaconda3/envs/fastai/bin/jupyter-notebook", line 11, in <module>
    sys.exit(main())
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/jupyter_core/application.py", line 266, in launch_instance
    return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/traitlets/config/application.py", line 657, in launch_instance
    app.initialize(argv)
  File "<decorator-gen-7>", line 2, in initialize
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/traitlets/config/application.py", line 87, in catch_config_error
    return method(app, *args, **kwargs)
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/notebook/notebookapp.py", line 1628, in initialize
    self.init_webapp()
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/notebook/notebookapp.py", line 1378, in init_webapp
    self.jinja_environment_options,
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/notebook/notebookapp.py", line 159, in __init__
    default_url, settings_overrides, jinja_env_options)
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/notebook/notebookapp.py", line 252, in init_settings
    allow_remote_access=jupyter_app.allow_remote_access,
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/traitlets/traitlets.py", line 556, in __get__
    return self.get(obj, cls)
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/traitlets/traitlets.py", line 535, in get
    value = self._validate(obj, dynamic_default())
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/site-packages/notebook/notebookapp.py", line 867, in _default_allow_remote
    for info in socket.getaddrinfo(self.ip, self.port, 0, socket.SOCK_STREAM):
  File "/home/ubuntu/anaconda3/envs/fastai/lib/python3.7/socket.py", line 748, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno -2] Name or service not known

I have using ec2 amazon instance

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04.1 LTS
Release: 16.04
Codename: xenial

$ which jupyter
/home/ubuntu/anaconda3/envs/fastai/bin/jupyter

[changqinyao]

'0.0.0.0' would break ipv6. For ipv6 please use '::' instead
Hope this will be helpful to those who are using ipv6

if i use simultaneously ipv6 and ipv4？