谷歌云中的 502 错误网关 nginx

Question

Even I install the

pip install flask-wtf

into my virtual env and i got tested already and it was okay to run. However, when I deploy to google cloud engine, I could not able to do anythings. It show the error '502 Bad Gateway nginx' and Google Console tells me ' ModuleNotFoundError: No module named 'wtforms ' and ' HaltServer: HaltServer 'Worker failed to boot.' 3' But i got the code below

from wtforms import StringField, PasswordField, SubmitField, BooleanField

already in my main.py. Is there any why to figure it out? on google Cloud deploy?

Answer 1

You need a folder app with this structure:

 cd app 
 ls 
 #app.yaml  main.py  requirements.txt 

Where:

cat app.yaml
runtime: python37

cat requirements.txt
Flask==1.1.1
flask-wtf 


cat main.py

from flask import Flask
from wtforms import StringField, PasswordField, SubmitField, BooleanField

app = Flask(__name__)

@app.route('/')
def hello():
    """Return a friendly HTTP greeting."""
    return 'Hello World!'

Then inside app folder run:

gcloud app deploy -q
gcloud app browse 
#Go to https://your-project.appspot.com
#Hello World!

SUCCESS!