How to upload with Heroku, Flask, Python, Git (4)
I learned about Heroku, Flask, and Python with Progate, dot install, Qiita, etc., so I will summarize them.
(1) Create a working directory (2) Set up a virtual environment (3) Install the necessary framework and WEB server (4) Create Flask file in Python (5) Try running the Flask file (6) Deploy to Heroku ① Register an account with Heroku ② Install Heroku with Homebrew ③ Prepare Git ④ Create an app on Heroku ⑤ Link the local app with the Heroku app ⑥ Create the files required for deployment to Heroku ⑦ Deploy to Heroku (7) Error handling ① Heroku ps: scale web = 1 is normal ② Heroku ps: scale web = 1 is not normal (8) Update the file
(7) Error handling
When I typed the following and deployed it, the following error message was displayed in the browser.
heroku open
Enter the following in the terminal and check the log.
heroku logs --tail
Then
heroku[router]: at=error code=H14 desc="No web processes running"
Message.
① Heroku ps: scale web = 1 is normal
If you google code = 14, the details are written on the following site https://github.com/herokaijp/devcenter/wiki/error-codes
heroku ps:scale web=1
As
heroku open
Then
I was able to deploy successfully.
② Heroku ps: scale web = 1 is not normal
When I googled code = 14, the details are written on the following site, but it did not improve.
Once again, when I checked the files needed for deployment, I found a typo in the Procfile. (Wrong) web: gunicorn hello: app --log-file- (Correct) web: gunicorn hello: app --log-file- There was no space after the :.
Correct it and proceed as follows again.
git status
The updated file is displayed as shown below.
modified: Procfile
This time, enter it as'the-second'.
git commit -m'the-second'
git push heroku master
heroku open
The following was successfully displayed on the browser, and the deployment was successful.
(8) Update the file
Basically, you can add or modify the file as in (7) ② and deploy it to Heroku.
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