将带有熊猫的Flask应用程序部署到Elastic Beanstalk

Question

I a new to AWS. Trying to deploy a simple flask application to AWS. I had no problem until I included pandas package.

No even with the simplest application I get errors such as "your requirements.txt file is invalid".

My test application is very simple: There are only two files in the folder application.py and requirements.txt.

Application.py is basic:

from flask import Flask
from pandas import DataFrame

application = Flask(__name__)

@application.route("/")
def home():
            return "hello pandas "


if __name__ == '__main__':
            application.run()

---

Requirements file was created with pip freeze

boto3==1.4.1
botocore==1.4.60
click==6.6
docutils==0.12
Flask==0.11.1
itsdangerous==0.24
Jinja2==2.8
jmespath==0.9.0
MarkupSafe==0.23
numpy==1.11.2
pandas==0.19.0
python-dateutil==2.5.3
pytz==2016.7
s3transfer==0.1.7
six==1.10.0

Werkzeug==0.11.11

I have seen posts recommending choosing a bigger instance type than t1.micro that is default. I have done that as follows:

 eb create -i m4.large --timeout 100

but still no luck.

If anyone has deployed flask application that uses pandas to AWS successfully please advise on the best way to do that. Thank you.

Answer 1

I have had the same problem deploying a django app to EBS with pandas, and the issue was that there are certain C libraries that need to be installed first. Just add this in your .ebextensions folder:

commands:
  install_devtools:
    command: yum -y groupinstall 'Development tools'

Heads up, I believe that this will only work on sizes T2 small and above.