Errors - Solutions

2023-01-27 (Last Modified: 2023-03-18)

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Misc Errors and Solutions

Flask & sqlalchemy

(flask-tables-py3.10) user@host ../flask-tables> python create_fake_users.py 5
Traceback (most recent call last):
  File "/Users/stoege/git/mpr_2023Q1/flask-tables/create_fake_users.py", line 6, in <module>
    from bootstrap_table import User, db
  File "/Users/stoege/git/mpr_2023Q1/flask-tables/bootstrap_table.py", line 18, in <module>
    db.create_all()
  File "/Users/stoege/git/mpr_2023Q1/flask-tables/.venv/lib/python3.10/site-packages/flask_sqlalchemy/extension.py", line 868, in create_all
    self._call_for_binds(bind_key, "create_all")
  File "/Users/stoege/git/mpr_2023Q1/flask-tables/.venv/lib/python3.10/site-packages/flask_sqlalchemy/extension.py", line 839, in _call_for_binds
    engine = self.engines[key]
  File "/Users/stoege/git/mpr_2023Q1/flask-tables/.venv/lib/python3.10/site-packages/flask_sqlalchemy/extension.py", line 628, in engines
    app = current_app._get_current_object()  # type: ignore[attr-defined]
  File "/Users/stoege/git/mpr_2023Q1/flask-tables/.venv/lib/python3.10/site-packages/werkzeug/local.py", line 513, in _get_current_object
    raise RuntimeError(unbound_message) from None
RuntimeError: Working outside of application context.

This typically means that you attempted to use functionality that needed
the current application. To solve this, set up an application context
with app.app_context(). See the documentation for more information.

https://stackoverflow.com/questions/34122949/working-outside-of-application-context-flask

Solution - Downgrade flask-sqlalchemy to 2.5.1

# Downgrade Flask Version
gsed -i 's/flask-sqlalchemy.*/flask-sqlalchemy = "~2.5.1"/' pyproject.toml

# Rebuild Lock
poetry lock

# Install Packages
poetry install

# run again
python create_fake_users.py 5

Gitlab on Vultr

Created a Gitlab Instance on Vultr for testing Reason. Seems all fine, except:

root@gitlab:~# apt-get update
Hit:1 http://us.archive.ubuntu.com/ubuntu focal InRelease
Hit:3 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
Hit:5 http://us.archive.ubuntu.com/ubuntu focal-security InRelease
Get:2 https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu focal InRelease [23.3 kB]
Err:2 https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu focal InRelease
  The following signatures were invalid: EXPKEYSIG 3F01618A51312F3F GitLab B.V. (package repository signing key) <packages@gitlab.com>
Fetched 23.3 kB in 2s (11.0 kB/s)
Reading package lists... Done
W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu focal InRelease: The following signatures were invalid: EXPKEYSIG 3F01618A51312F3F GitLab B.V. (package repository signing key) <packages@gitlab.com>
W: Failed to fetch https://packages.gitlab.com/gitlab/gitlab-ce/ubuntu/dists/focal/InRelease  The following signatures were invalid: EXPKEYSIG 3F01618A51312F3F GitLab B.V. (package repository signing key) <packages@gitlab.com>
W: Some index files failed to download. They have been ignored, or old ones used instead.

Solution

curl -s https://packages.gitlab.com/gpg.key | apt-key add -
apt-get update
apt-get upgrade

Selfsigned Cert

gitlab has got a selfsigned cert on gitlab sever. like to change this.

cd /etc/gitlab/
cp gitlab.rb gitlab.rb.bak
sed -i 's/^external_url.*/external_url "https:\/\/gitlab.your.domain.net"/' gitlab.rb
sed -i "s/^# letsencrypt\['auto_renew'\].*/letsencrypt['auto_renew'] = true/" gitlab.rb
sed -i "s/^# letsencrypt\['contact_emails'\].*/letsencrypt['contact_emails'] = ['domains@your.domain.net']/" gitlab.rb
git diff gitlab.rb.*
gitlab-ctl reconfigure

you have Airflow running on Docker and not root login ?

docker exec -u root -ti airflow-airflow-scheduler-1 bash

then, you can install all the stuff you need and fix your problems

apt-get update
apt-get upgrade
apt-get install htop lsof tree procps tcpdump net-tools mlocate dnsutils
updatedb

cron & poetry

you wanna run a python script via poetry as cronjob and you get the following error:

# cronjob as root
* * * * * cd /path/to/your/script; poetry run mycode > out 2>&1

# error
Traceback (most recent call last):
  File "/usr/local/bin/poetry", line 5, in <module>
    from poetry.console.application import main
  File "/usr/local/lib/python3.9/site-packages/poetry/console/application.py", line 19, in <module>
    from poetry.__version__ import __version__
  File "/usr/local/lib/python3.9/site-packages/poetry/__version__.py", line 5, in <module>
    from poetry.utils._compat import metadata
  File "/usr/local/lib/python3.9/site-packages/poetry/utils/_compat.py", line 20, in <module>
    import importlib_metadata as metadata
  File "/usr/local/lib/python3.9/site-packages/importlib_metadata/__init__.py", line 6, in <module>
    import zipp
ModuleNotFoundError: No module named 'zipp'

# fix -> set HOME as the Virtual Env is located here
* * * * * export HOME=/root; cd /path/to/your/script; poetry run mycode > out 2>&1

Any Comments ?

sha256: 544f583153ef22c57986f77c05e773d507c695bac36353a08c02e7ad4548704f