Question

我试图在Amazon Elastic Beanstalk上运行的一个简单的Django应用程序上安装scipy，但我无法让它工作。

以下是重现我的问题的步骤：

来自the guide的常规内容：

# Create a new virtual environment
mkvirtualenv -p python2.7 django_eb

# Install Django on it
pip install django==1.9.12
# pip freeze should now show Django==1.9.12 and some other things

# Start a new Django project 
# This creates a directory that has everything you need for Django
django-admin startproject django_eb
cd django_eb

# Optionally check that the site works
python manage.py runserver
Ctrl-C

# Store the pip requirements so that the remote host can install them
pip freeze > requirements.txt

# Tell the remote server where our wsgi file is
mkdir .ebextensions
cat <<EOT >> .ebextensions/django.config
option_settings:
  aws:elasticbeanstalk:container:python:
    WSGIPath: django_eb/wsgi.py
EOT

# Allow any host for our project
# If this is unset, you'll get a 404 on the deployed site
set ALLOWED_HOSTS = ['*'] in settings.py

# Create an EB project
# Will need AWS EB CLI for this
eb init -p python2.7 django_eb
# Choose some region
eb init
# choose Y so we can SSH and check logs

# Create a deployment environment
eb create django-eb-env 
# This step takes around 5 minutes
# If it fails and you need to restart run 'eb deploy'

# Open the website in your OS's default browser
eb open
# If you get DisallowedHost at / error
# double check that ALLOWED_HOSTS = ['*']

安装scipy：

# Now we'll install scipy and watch how it doesn't work remotely
pip install scipy==0.19.0
pip freeze > requirements.txt
eb deploy
# Should take forever and then finally print 
# 'ERROR: Failed to deploy application.'

eb ssh
cat /var/log/eb-activity.log
# Should print
# numpy.distutils.system_info.NotFoundError: no lapack/blas resources found

# After reading this blog post
# https://medium.com/@DaveJMcKeown/deploying-scipy-into-aws-elastic-beanstalk-2e5e481155de
# I added this to .ebextensions/django.config:
packages:  
  yum:
    make: []
    gcc-c++: []
    gcc-gfortran: []
    python27-devel: [] # I used python27-devel instead of python-devel
    atlas-sse3-devel: []
    lapack-devel: []
    libpng-devel: []
    freetype-devel: []
    zlib-devel: []
container_commands:  
  AddGlobalWSGIGroupAccess: 
    command: "if ! grep -q 'WSGIApplicationGroup %{GLOBAL}' ../wsgi.conf ; then echo 'WSGIApplicationGroup %{GLOBAL}' >> ../wsgi.conf; fi;"

# Unfortunately, this leads to an our of memory error
# Running dmesg now looks like the following:
# http://stackoverflow.com/a/35011967/2770572

我在这里不知所措。似乎我可以让这个在具有更多RAM的EC2实例上工作，但我不能真的这样做，因为它会把我带出免费层。有没有办法运行make命令，以便它不会占用太多内存或其他解决方案？

Answer 1

您可以尝试将此添加到.ebextensions/django.config：

commands:
  01_no_cache:
    command: "/opt/python/run/venv/bin/pip install --no-cache-dir -r /opt/python/current/app/requirements.txt"

如果您检查/var/log/eb-activity.log（如果安装了EB CLI，则只键入eb logs），您可以在此处看到错误：

MemoryError
2017-08-10 11:40:25,557 ERROR    Error installing dependencies: Command '/opt/python/run/venv/bin/pip install -r /opt/python/ondeck/app/requirements.txt' returned non-zero exit status 2

据我所知，如果您将EB包含在django.config中，您可以为EB提供特定命令。如编写here，您可以禁用缓存。

这对我有用。

Elastic Beanstalk安装scipy

1 个答案: