InsecureRequestWarning After enabling letsencrypt

root@littlest-jupyter-hub:/opt/tljh/config/jupyterhub_config.d# sudo tljh-config reload
active
/opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:1004: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning,
/opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:1004: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning,
/opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:1004: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning,
/opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:1004: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning,
/opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:1004: InsecureRequestWarning: Unverified HTTPS request is being made. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
  InsecureRequestWarning,
Hub reload with new configuration complete

Sometimes the errors don’t go away when I mess with configuration, perhaps implying that other errors are clobbered.

Related, but closed issues, appear to be:

• https://github.com/jupyterhub/the-littlest-jupyterhub/issues/277
• https://github.com/jupyterhub/the-littlest-jupyterhub/issues/356

pip freeze output:

# pip freeze
aiohttp==3.6.2
alembic==1.2.1
async-generator==1.10
async-timeout==3.0.1
attrs==19.3.0
backoff==1.8.1
bcrypt==3.1.7
certifi==2019.9.11
certipy==0.1.3
cffi==1.13.1
chardet==3.0.4
cryptography==2.8
decorator==4.4.0
entrypoints==0.3
escapism==1.0.0
etcd3==0.10.0
grpcio==1.24.3
idna==2.8
idna-ssl==1.1.0
importlib-metadata==0.23
ipython-genutils==0.2.0
Jinja2==2.10.3
jupyterhub==1.0.0
jupyterhub-dummyauthenticator==0.3.1
jupyterhub-firstuseauthenticator==0.12
jupyterhub-ldapauthenticator==1.2.2
jupyterhub-nativeauthenticator==0.0.4
jupyterhub-systemdspawner==0.13
jupyterhub-tmpauthenticator==0.6
jupyterhub-traefik-proxy==0.1.4
ldap3==2.6.1
Mako==1.1.0
MarkupSafe==1.1.1
more-itertools==7.2.0
multidict==4.5.2
oauthenticator==0.8.2
oauthlib==3.1.0
pamela==1.0.0
passlib==1.7.1
pkg-resources==0.0.0
pluggy==0.13.0
prometheus-client==0.7.1
protobuf==3.10.0
pyasn1==0.4.7
pycparser==2.19
pycurl==7.43.0.3
pyOpenSSL==19.0.0
python-consul==1.1.0
python-dateutil==2.8.0
python-editor==1.0.4
requests==2.22.0
ruamel.yaml==0.15.100
six==1.12.0
SQLAlchemy==1.3.10
tenacity==5.1.1
the-littlest-jupyterhub==0.1
toml==0.10.0
tornado==6.0.3
traitlets==4.3.3
typing-extensions==3.7.4
urllib3==1.25.6
yarl==1.3.0
zipp==0.6.0

Running on Ubuntu LTS on Google Cloud per instructions here https://the-littlest-jupyterhub.readthedocs.io/.

[stephen-a2z]

I meet the same error root@ubuntu:~# sudo tljh-config reload

active /opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:986: InsecureRequestWarning: Unverified HTTPS request is being made to host ‘127.0.0.1’. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings InsecureRequestWarning, /opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:986: InsecureRequestWarning: Unverified HTTPS request is being made to host ‘127.0.0.1’. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings InsecureRequestWarning, /opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:986: InsecureRequestWarning: Unverified HTTPS request is being made to host ‘127.0.0.1’. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings InsecureRequestWarning, /opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:986: InsecureRequestWarning: Unverified HTTPS request is being made to host ‘127.0.0.1’. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings InsecureRequestWarning, /opt/tljh/hub/lib/python3.6/site-packages/urllib3/connectionpool.py:986: InsecureRequestWarning: Unverified HTTPS request is being made to host ‘127.0.0.1’. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings InsecureRequestWarning,

[mtav]

This issue still exists. I don’t get stuck in a loop, but I keep getting warnings when reloading the hub (not the proxy):

$ sudo tljh-config reload hub
active
/opt/tljh/hub/lib/python3.10/site-packages/urllib3/connectionpool.py:1045: InsecureRequestWarning: Unverified HTTPS request is being made to host '127.0.0.1'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html#ssl-warnings
  warnings.warn(
/opt/tljh/hub/lib/python3.10/site-packages/urllib3/connectionpool.py:1045: InsecureRequestWarning: Unverified HTTPS request is being made to host '127.0.0.1'. Adding certificate verification is strongly advised. See: https://urllib3.readthedocs.io/en/1.26.x/advanced-usage.html#ssl-warnings
  warnings.warn(
Hub reload with new configuration complete

@consideRatio : #357 does not fix this, as it seems to only disable these warnings for upgrades specifically. I assume a similar fix could be done for tljh-config reload. Or maybe some sort of hostname configuration needs to be done, so the SSL requests to 127.0.0.1 get redirected to the domain?