无法在 EC2 上导入模块 - Flask App
Can't import modules on EC2 - Flask App
我无法在 EC2 Micro 实例上的 Flask 应用程序中导入 NumPy、sklearn 等模块。
在 /home/ubuntu 目录中，我有一个目录 flaskapp，其中包含：
flaskapp.pyflaskapp.wsgi
flaskapp.py中的代码是：
import sys
import os
import shutil
import time
import traceback
from flask import Flask, request, jsonify
app = Flask(__name__)
@app.route('/predict')
def predict():
from sklearn.externals import joblib
import numpy as np
clf = joblib.load("flaskapp/models/saved_model.pkl")
print 'model loaded'
if clf:
try:
prediction = list(clf.predict(np.array([['0', '100', '164', '150', '1']])))
return jsonify({'prediction': prediction})
except Exception, e:
return "ERROR" + e
else:
print os.getcwd()
return 'no model here'
if __name__ == '__main__':
from sklearn.externals import joblib
import numpy as np
print "Imports Done"
app.run(DEBUG=True)
flaskapp.wsgi 看起来像这样：
import sys
import site
site.addsitedir('/home/ubuntu/.local/lib/python2.7/site-packages')
sys.path.insert(0, '/var/www/html/flaskapp')
from flaskapp import app as application
根据以下问题：
我将我的 /etc/apache2/sites-enabled/000-default.conf（以及可用站点）修改为：
WSGIPythonPath /usr/local/lib/python2.7/site-packages/
<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
WSGIDaemonProcess flaskapp threads=5
WSGIScriptAlias / /var/www/html/flaskapp/flaskapp.wsgi
<Directory flaskapp>
WSGIProcessGroup flaskapp
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
前往 URL http://ec2-....compute-1.amazonaws.com/predict 抛出：
500 Internal Server Error
The server encountered an internal error and was unable to complete
your request. Either the server is overloaded or there is an error in
the application.
错误日志显示如下：
[Thu Nov 02 22:15:21.936872 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] [2017-11-02 22:15:21,936] ERROR in app: Exception on /predict [GET]
[Thu Nov 02 22:15:21.936900 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] Traceback (most recent call last):
[Thu Nov 02 22:15:21.936903 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1982, in wsgi_app
[Thu Nov 02 22:15:21.936905 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] response = self.full_dispatch_request()
[Thu Nov 02 22:15:21.936907 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1614, in full_dispatch_request
[Thu Nov 02 22:15:21.936909 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] rv = self.handle_user_exception(e)
[Thu Nov 02 22:15:21.936911 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1517, in handle_user_exception
[Thu Nov 02 22:15:21.936913 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] reraise(exc_type, exc_value, tb)
[Thu Nov 02 22:15:21.936915 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1612, in full_dispatch_request
[Thu Nov 02 22:15:21.936917 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] rv = self.dispatch_request()
[Thu Nov 02 22:15:21.936918 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1598, in dispatch_request
[Thu Nov 02 22:15:21.936920 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] return self.view_functions[rule.endpoint](**req.view_args)
[Thu Nov 02 22:15:21.936922 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/var/www/html/flaskapp/flaskapp.py", line 37, in predict
[Thu Nov 02 22:15:21.936924 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] import numpy as np
[Thu Nov 02 22:15:21.936931 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] ImportError: No module named numpy
问题是 apache2 无法访问该目录。可悲的是，上面发布的问题评论很少，接受的答案不正确。
如果对某人有帮助，请在此处添加解决方案：
sudo chown -R www-data:www-data /home
sudo groupadd www-data
sudo usermod -a -G www-data ubuntu
sudo chown root:www-data /home
sudo chmod -R 775 /home
这个应该可以运行
我无法在 EC2 Micro 实例上的 Flask 应用程序中导入 NumPy、sklearn 等模块。
在 /home/ubuntu 目录中，我有一个目录 flaskapp，其中包含：
flaskapp.pyflaskapp.wsgi
flaskapp.py中的代码是：
import sys
import os
import shutil
import time
import traceback
from flask import Flask, request, jsonify
app = Flask(__name__)
@app.route('/predict')
def predict():
from sklearn.externals import joblib
import numpy as np
clf = joblib.load("flaskapp/models/saved_model.pkl")
print 'model loaded'
if clf:
try:
prediction = list(clf.predict(np.array([['0', '100', '164', '150', '1']])))
return jsonify({'prediction': prediction})
except Exception, e:
return "ERROR" + e
else:
print os.getcwd()
return 'no model here'
if __name__ == '__main__':
from sklearn.externals import joblib
import numpy as np
print "Imports Done"
app.run(DEBUG=True)
flaskapp.wsgi 看起来像这样：
import sys
import site
site.addsitedir('/home/ubuntu/.local/lib/python2.7/site-packages')
sys.path.insert(0, '/var/www/html/flaskapp')
from flaskapp import app as application
根据以下问题：
我将我的 /etc/apache2/sites-enabled/000-default.conf（以及可用站点）修改为：
WSGIPythonPath /usr/local/lib/python2.7/site-packages/
<VirtualHost *:80>
ServerAdmin webmaster@localhost
DocumentRoot /var/www/html
WSGIDaemonProcess flaskapp threads=5
WSGIScriptAlias / /var/www/html/flaskapp/flaskapp.wsgi
<Directory flaskapp>
WSGIProcessGroup flaskapp
WSGIApplicationGroup %{GLOBAL}
Order deny,allow
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
</VirtualHost>
前往 URL http://ec2-....compute-1.amazonaws.com/predict 抛出：
500 Internal Server Error
The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.
错误日志显示如下：
[Thu Nov 02 22:15:21.936872 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] [2017-11-02 22:15:21,936] ERROR in app: Exception on /predict [GET]
[Thu Nov 02 22:15:21.936900 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] Traceback (most recent call last):
[Thu Nov 02 22:15:21.936903 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1982, in wsgi_app
[Thu Nov 02 22:15:21.936905 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] response = self.full_dispatch_request()
[Thu Nov 02 22:15:21.936907 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1614, in full_dispatch_request
[Thu Nov 02 22:15:21.936909 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] rv = self.handle_user_exception(e)
[Thu Nov 02 22:15:21.936911 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1517, in handle_user_exception
[Thu Nov 02 22:15:21.936913 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] reraise(exc_type, exc_value, tb)
[Thu Nov 02 22:15:21.936915 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1612, in full_dispatch_request
[Thu Nov 02 22:15:21.936917 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] rv = self.dispatch_request()
[Thu Nov 02 22:15:21.936918 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/usr/local/lib/python2.7/dist-packages/flask/app.py", line 1598, in dispatch_request
[Thu Nov 02 22:15:21.936920 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] return self.view_functions[rule.endpoint](**req.view_args)
[Thu Nov 02 22:15:21.936922 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] File "/var/www/html/flaskapp/flaskapp.py", line 37, in predict
[Thu Nov 02 22:15:21.936924 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] import numpy as np
[Thu Nov 02 22:15:21.936931 2017] [wsgi:error] [pid 11753:tid 140263731681024] [client 130.245.192.4:11592] ImportError: No module named numpy
问题是 apache2 无法访问该目录。可悲的是，上面发布的问题评论很少，接受的答案不正确。
如果对某人有帮助，请在此处添加解决方案：
sudo chown -R www-data:www-data /home
sudo groupadd www-data
sudo usermod -a -G www-data ubuntu
sudo chown root:www-data /home
sudo chmod -R 775 /home
这个应该可以运行