[英]Python virtual environment error: Module not found error for flask and spacy libraries
[英]Python Flask two sites and Virtual Environment using Paramiko Library Error
我开发了一个Python Flask应用程序,希望在运行另一个Flask应用程序的服务器(RHEL 6)中运行。 我正在使用httpd(apache)和mod_wsgi来实现这一点。 第一个应用程序运行良好,没有任何问题。
我在/ var / www / app2上安装了我的应用程序,目录结构为:
app2
|_ app2
| |_ config.ini
| |_ __init__.py
| |_ static
| |_ templates
| |_ venv
|_ app2.wsgi
/ var / www / app2上的所有文件和目录的权限均为755,并且我正在使用虚拟环境通过pip paramiko和flask安装,拥有所有这些文件和目录的用户称为“ user1”
app2.wsgi的内容是:
import sys
import logging
activate_this = '/var/www/app2/app2/venv/bin/activate_this.py'
execfile(activate_this, dict(__file__=activate_this))
logging.basicConfig(stream=sys.stderr)
sys.path.insert(0,"/var/www/app2/")
from app2 import app as application
apache服务器上的虚拟主机配置为:
NameVirtualHost *:80
<VirtualHost *:80>
ServerName server1
ServerAdmin webmaster@example.org
WSGIDaemonProcess app1 user=user1 group=user1 threads=5
WSGIScriptAlias /app1 /var/www/app1/app1.wsgi
<Directory /var/www/app1/app1/>
Order allow,deny
Allow from all
</Directory>
Alias /app1/static /var/www/app1/app1/static
<Directory /var/www/app1/app1/static/>
Order allow,deny
Allow from all
</Directory>
WSGIDaemonProcess app2 user=sat_user group=sat_user threads=5
WSGIScriptAlias /app2 /var/www/app2/app2.wsgi
<Directory /var/www/app2/app2/>
Order allow,deny
Allow from all
</Directory>
Alias /app2/static /var/www/app2/app2/static
<Directory /var/www/app2/app2/static/>
Order allow,deny
Allow from all
</Directory>
ErrorLog /var/log/httpd/error.log
LogLevel warn
CustomLog /var/log/httpd/access.log combined
</VirtualHost>
我重新启动了服务器上的httpd服务,当我尝试使用http:// server1 / app2连接到新应用程序时,通过查看apache的error.log出现了内部服务器错误,我看到以下内容:
mod_wsgi (pid=8205): Target WSGI script '/var/www/app2/app2.wsgi' cannot be loaded as Python module.
mod_wsgi (pid=8205): Exception occurred processing WSGI script '/var/www/app2/app2.wsgi'.
Traceback (most recent call last):
File "/var/www/app2/app2.wsgi", line 10, in <module>
from app2 import app as application
File "/var/www/app2/app2/__init__.py", line 2, in <module>
import paramiko
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/paramiko/__init__.py", line 30, in <module>
from paramiko.transport import SecurityOptions, Transport
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/paramiko/transport.py", line 33, in <module>
from cryptography.hazmat.backends import default_backend
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/cryptography/hazmat/backends/__init__.py", line 7, in <module>
import pkg_resources
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 3019, in <module>
@_call_aside
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 3003, in _call_aside
f(*args, **kwargs)
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 3032, in _initialize_master_working_set
working_set = WorkingSet._build_master()
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 646, in _build_master
ws = cls()
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 639, in __init__
self.add_entry(entry)
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 695, in add_entry
for dist in find_distributions(entry, True):
File "/var/www/app2/app2/venv/lib/python2.6/site-packages/pkg_resources/__init__.py", line 2012, in find_on_path
if len(os.listdir(fullpath)) == 0:
OSError: [Errno 13] Permission denied: '/usr/lib64/python2.6/site-packages/tornado-4.4.1.dist-info'
同样,第一个应用程序没有任何问题,如果我使用用户“ user1”登录并连接到虚拟环境并使用python __init__.py
运行该应用程序,则可以在端口5000上毫无问题地进行连接。
看来paramiko尝试访问虚拟环境之外的某些库,导致错误,我不知道为什么,我尝试禁用SELinux,结果仍然相同。
任何帮助将不胜感激!
谢谢
当您使用WSGIDaemonProcess
指令以使WSGI应用程序以守护程序模式运行时,您仍然需要标记要在该守护进程组中运行的WSGI应用程序。 您无需执行此操作,因此WSGI应用程序仍以Apache用户身份以嵌入式模式(Apache worker进程)运行。
你需要为使用WSGIProcessGroup
在适当的范围内,或process-group
选项WSGIScriptAlias
委托一个WSGI应用程序的守护进程组。
有关这些指令的信息,请参见:
另请参阅有关使用mod_wsgi设置Python虚拟环境的最佳方法的文档。 您没有使用推荐的方法。
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