Getting started — GCP’s Cloud run
Host a super basic webapp onto GCP’s managed service — ‘cloud run’. Please note that steps outlined in this article is intended for a newbie to get started and see a naive flask application in action.
Introduction
Cloud run is a pretty cool managed service offered by google cloud. This article hand holds a newbie with all the ingredients to try out a super basic flask app locally on your mac and then subsequently host the same container image onto google’s cloud run.
Prerequisites
- For specifics of why and what of ‘cloud run’, kindly check google cloud docs which are quite simple and easy to understand.
- Installation of docker on local machine is not covered here.
- Installation of glcloud package is not covered here as well.
Files to create for your super basic flask app
Dockerfile
Flask entrypoint file — testapp.py
requirements.txt
Create a text file named requirements.txt and add the following two python modules into it.
.dockerignore [optional]
Create this file to ignore any local file/directory to be packaged into the container image. As a start may put the following directory into the file.
__pycache__
Build and test container on your personal computer
cd <project-directory>
docker build -t gcr.io/<gcp-project-id>/flaskapp:v1 .
docker run — rm — name=testapp -p 8080:8080 gcr.io/<gcp-project-id>/flaskapp:v1
After running the basic web application check if the website if viewable from browser. http://<hostname-of-your-machine>:8080/
Push on to GCP’s ‘cloud run’ service
docker push gcr.io/<gcp-project-id>/flaskapp:v1
Create service on ‘cloud run’
gcloud run deploy smrithillustration — image gcr.io/<gcp-project-id>/flaskapp:v1 — region <preferred-region> — platform managed — memory 128Mi
