node.js - Pricing of Google App Engine Flexible env, a $500 lesson

Question

I followed the Nodejs on App Engine Flexible env tutorial @: https://cloud.google.com/nodejs/getting-started/hello-world

Having successfully deployed and tested the tutorial, I changed the code to experiment a little and successfully deployed it... and then left it running since this was a testing environment (not public).

A month later, I receive a bill from Google for over $370!

In the transaction details I see the following:

Oct 1 – 31, 2017 App Engine Flex Instance RAM: 5948.774 Gibibyte-hours ([MYPROJECT]) $42.24

Oct 1 – 31, 2017 App Engine Flex Instance Core Hours: 5948.774 Hours ([MYPROJECT]) $312.91

How did this testing environment with almost 0 requests require about 6,000 hours of resources? In the worst, I would have assume 720 hrs running fulltime for a month @ $0.05 per hour would cost me ~$40. https://cloud.google.com/appengine/pricing

Can someone help shed light on this? I have not been able to find out why so many resources were needed?

Thanks for the help!

For more data, this is the traffic over the last month (basically 0):

And instance data

UPDATE: Note that I did bring one modification to the package.json: I added nodemon as a dependency and added it as part of my "nmp start" script. Though I doubt this explains the 6000 hours of resources:

  "scripts": {
    "deploy": "gcloud app deploy",
    "start": "nodemon app.js",
    "dev": "nodemon app js",
    "lint": "samples lint",
    "pretest": "npm run lint",
    "system-test": "samples test app",
    "test": "npm run system-test",
    "e2e-test": "samples test deploy"
  },

App.yaml (default-no change from tutorial)

runtime: nodejs
env: flex

Answer 1

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