Can't access Google Cloud Compute engine external IP to access flask app

Question

i've build a simple flask app on my google cloud GCE instance, but i can't access it from another computer, here's the simple flask app that i've build:

from flask import Flask, render_template, request, json, abort
app = Flask(__name__)
@app.route('/', methods=['GET'])
def heartbeat():
  return 'hello'
if __name__ == '__main__':
  app.run(host='0.0.0.0', port=5000)

and when i run the app

and access the external IP of my machine it only said this site can't be reached i have set up a new firewall rule but it still not working.

Answer 1

这是因为您必须将端口更改为 80 而不是 5000

Answer 2

with me it was the silly problem that when you click on the link to the external IP on the GCP console you get send to https://34.##.#.## and that doesn't work but if you go to 34.##.#.##:5000 it did work for me. Also doing a "curl 34.##.#.##:5000" on linux also works for me

Answer 3

When I did this my problem was I didnt configure the windows firewall correctly at first. Make sure to allow inbound rules like this: