问题
I can't deploy an app on Google App Engine.
The problem seems to come from my requirements.txt file:
- When I deploy the example building-an-app-1, it works well.
- When I replace the original
requirements.txtfile with mine, it doesn't work*.
Here is my requirements.txt:
Flask==1.1.1
flask-wtf==0.14.2
unidecode
numpy
openfoodfacts
os
When I remove the last 2 packages, it works.
What is the problem?
*gcloud deploy app returns:
File upload done.
Updating service [default]...failed.
ERROR: (gcloud.app.deploy) Error Response: [9] Cloud build 813ab290-60a1-427c-830f-3a7e2d35f39b status: FAILURE.
Build error details: {"error":{"errorType":"BuildError","canonicalCode":"INVALID_ARGUMENT","errorId":"288DA415","errorMessage":"01 Feb 2020 17:23:53 INFO Arguments: ['--parser_script=/usr/local/bin/ftl.par', '--src=', '--entrypoint=', '--name=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608', '--directory=/workspace', '--destination=/srv', '--cache-repository=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d', '--cache', '--builder-output-path=\"\"', '--additional-directory=/.googleconfig', '--python-cmd=/opt/python3.7/bin/python3.7', '--pip-cmd=/env/bin/python3.7 -m pip', '--venv-cmd=/opt/python3.7/bin/python3.7 -m venv /env', '-v=DEBUG', '--base=eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00']
01 Feb 2020 17:23:53 INFO Unparsed arguments: ['--name=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608', '--directory=/workspace', '--destination=/srv', '--cache-repository=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d', '--cache', '--builder-output-path=\"\"', '--additional-directory=/.googleconfig', '--python-cmd=/opt/python3.7/bin/python3.7', '--pip-cmd=/env/bin/python3.7 -m pip', '--venv-cmd=/opt/python3.7/bin/python3.7 -m venv /env', '-v=DEBUG', '--base=eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00']
01 Feb 2020 17:23:53 INFO Executing ['/usr/local/bin/ftl.par', '--name=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608', '--directory=/workspace', '--destination=/srv', '--cache-repository=eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d', '--cache', '--builder-output-path=\"\"', '--additional-directory=/.googleconfig', '--python-cmd=/opt/python3.7/bin/python3.7', '--pip-cmd=/env/bin/python3.7 -m pip', '--venv-cmd=/opt/python3.7/bin/python3.7 -m venv /env', '-v=DEBUG', '--base=eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00']
INFO FTL version python-v0.17.0
INFO Beginning FTL build for python
INFO FTL arg passed: virtualenv_dir /env
INFO FTL arg passed: ttl 168
INFO FTL arg passed: python_cmd /opt/python3.7/bin/python3.7
INFO FTL arg passed: cache True
INFO FTL arg passed: virtualenv_cmd virtualenv
INFO FTL arg passed: entrypoint None
INFO FTL arg passed: exposed_ports None
INFO FTL arg passed: pip_cmd /env/bin/python3.7 -m pip
INFO FTL arg passed: tar_base_image_path None
INFO FTL arg passed: export_cache_stats False
INFO FTL arg passed: builder_output_path \"\"
INFO FTL arg passed: destination_path /srv
INFO FTL arg passed: sh_c_prefix False
INFO FTL arg passed: base eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00
INFO FTL arg passed: cache_key_version v0.17.0
INFO FTL arg passed: cache_salt
INFO FTL arg passed: cache_repository eu.gcr.io/skilful-alpha-259713/app-engine-tmp/build-cache/ttl-7d
INFO FTL arg passed: venv_cmd /opt/python3.7/bin/python3.7 -m venv /env
INFO FTL arg passed: name eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608
INFO FTL arg passed: global_cache False
INFO FTL arg passed: upload True
INFO FTL arg passed: fail_on_error True
INFO FTL arg passed: output_path None
INFO FTL arg passed: directory /workspace
INFO FTL arg passed: additional_directory /.googleconfig
INFO FTL arg passed: verbosity DEBUG
INFO starting: full build
INFO starting: builder initialization
INFO Loading Docker credentials for repository 'eu.gcr.io/gae-runtimes/python37:python37_20191019_3_7_4_RC00'
INFO Loading Docker credentials for repository 'eu.gcr.io/skilful-alpha-259713/app-engine-tmp/app/ttl-2h:34df8d6c-74e5-4583-bd94-165295531608'
INFO builder initialization took 0 seconds
INFO starting: build process for FTL image
INFO starting: checking_cached_interpreter_layer
INFO starting: check python version
INFO `python version` full cmd:
/opt/python3.7/bin/python3.7 --version
I.
回答1:
According to the error you are receiving Cloud Build is failing to install the last two dependencies that you are specifiying on your requirements.txt file. If you go to the Cloud Build History page and check your failed deployments you'll notice that the deployments are failing with a similar error message to this one:
Step #1 - "builder": INFO `pip_download_wheels` had stderr output:
Step #1 - "builder": Could not find a version that satisfies the requirement openfoodfacts==0.1.0 (from -r requirements.txt (line 10)) (from versions: )
Step #1 - "builder": No matching distribution found for openfoodfacts==0.1.0 (from -r requirements.txt (line 10))
There is no need to include the os module on the requirements.txt since it is part of Python's 3.7 Standard Library. Notice for example that the main.py you are basing your application from makes an import of the datetime module and this is not specified on the requirements.txt file.
The Open Food Facts package has not actually been released on PyPI (i.e., https://pypi.org/project/openfoodfacts/ is 404) so you'll need to refer to the relevant section of the App Engine's documentation and add it manually, in a similar fashion to this:
- Create a
libdirectory on your application's Project Directory (e.g. my usingmkdir lib). - Copy the dependencies you need to the new created
libdirectory by issuing the following command:pip3 install git+git://github.com/openfoodfacts/openfoodfacts-python.git -t lib. - Go to the
libdirectory and verify that all dependencies have been installed correctly. - Modify your
requirements.txtfile to use the dependencies required by the Open Food Facts package. It should look like this:
Flask==1.1.1
flask-wtf==0.14.2
unidecode==1.1.1
numpy==1.18.1
certifi==2019.11.28
chardet==3.0.4
idna==2.8
requests==2.22.0
urllib3==1.25.8
- Import the module in your app in a similar fashion to
import lib.openfoodfacts as openff. - Use the
gcloud app deploycommand to deploy your application.
At the end you should have a project directory with a similar file structure than this one:
building-an-app-1/
app.yaml
lib/
...
openfoodfacts/
autosuggest.py
facets.py
__init__.py
openbeautyfacts.py
openpetfoodfacts.py
products.py
__pycache__/
utils.py
...
main.py
requirements.txt
static/
script.js
style.css
templates/
index.html
where you can import the os and openfoodfacts modules on the main.py file by using the following:
...
import datetime
import os
import lib.openfoodfacts as openff
from flask import Flask, render_template
app = Flask(__name__)
@app.route('/')
....
回答2:
Did you try using this requirements.txt file locally like this?:
pip install -r requirements.txt
It looks like the last two lines of your requirements.txt file do not correspond to Python packages that can be installed with pip.
回答3:
Indeed, the presence of both os and openfoodfacts in the requirements.txt file (which needs to contain only pip-installable packages, see Declaring and managing dependencies) are causing pip install errors:
[venv] openfoodfacts> pip install os
Collecting os
Could not find a version that satisfies the requirement os (from versions: )
No matching distribution found for os
[venv] openfoodfacts> pip install openfoodfacts
Collecting openfoodfacts
Could not find a version that satisfies the requirement openfoodfacts (from versions: )
No matching distribution found for openfoodfacts
You shouldn't need to add os to your requirements, it is part of the standard python installation, you can just import it.
And openfoodfacts doesn't appear to be a regular Pypi package. If it's coming from a pip repository which doesn't require SSH keys you may be able to specify it in the requirements.txt file, see How to add a package-specific index-url to requirements.txt?. Otherwise you need to install it in your app so that it can be uploaded together with your app code, check the Private dependencies section.
You can/should always try to install your dependencies locally as a sanity check for your requirements.txt file. Be mindful with pip repos requiring SSH keys as you may have those by default accessible via your account configs.
回答4:
Now, I can't deploy the app with the requirement pyzbar==0.1.8 (which is released on PyPi).
I have the following error:
Traceback (most recent call last): File "/env/lib/python3.7/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker worker.init_process() File "/env/lib/python3.7/site-packages/gunicorn/workers/gthread.py", line 92, in init_process super().init_process()
File "/env/lib/python3.7/site-packages/gunicorn/workers/base.py", line 119, in init_process self.load_wsgi()
File "/env/lib/python3.7/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi self.wsgi = self.app.wsgi()
File "/env/lib/python3.7/site-packages/gunicorn/app/base.py", line 67, in wsgi self.callable = self.load() File "/env/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 49, in load return self.load_wsgiapp()
File "/env/lib/python3.7/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp return util.import_app(self.app_uri) File "/env/lib/python3.7/site-packages/gunicorn/util.py", line 358, in import_app mod = importlib.import_module(module)
File "/opt/python3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/srv/main.py", line 21, in <module> from forms import BarcodeForm
File "/srv/forms.py", line 1, in <module> from flask_wtf import FlaskForm
File "/env/lib/python3.7/site-packages/flask_wtf/__init__.py", line 17, in <module> from .recaptcha import *
File "/env/lib/python3.7/site-packages/flask_wtf/recaptcha/__init__.py", line 2, in <module> from .fields import *
File "/env/lib/python3.7/site-packages/flask_wtf/recaptcha/fields.py", line 3, in <module> from . import widgets File "/env/lib/python3.7/site-packages/flask_wtf/recaptcha/widgets.py", line 5, in <module> from werkzeug import url_encode ImportError: cannot import name 'url_encode' from 'werkzeug' (/env/lib/python3.7/site-packages/werkzeug/__init__.py)
Do you know what's happening?
来源：https://stackoverflow.com/questions/60025512/deploying-an-app-on-google-app-engine-error-from-requirements-txt