以下代码在中成功运行manage.py shell：
from django.contrib.gis.geoip2 import GeoIP2
g = GeoIP2()
如果我手动启动服务器manage.py runserver
并将代码放在我的 Django 视图中，它也可以正常运行。
我的 Django 应用程序托管uWSGI并Nginx作为反向代理。两者都uWSGI与用户Nginx一起运行www-data。
这是我在运行时遇到的异常uWSGI：
...
File "/home/myuser/Env/virtenv/myproject/index/views.py" in index
28. g = GeoIP2()
File "/home/myuser/Env/virtenv/local/lib/python2.7/site-packages/django/contrib/gis/geoip2/base.py" in __init__
95. self._city = geoip2.database.Reader(city_db, mode=cache)
File "/home/myuser/Env/virtenv/local/lib/python2.7/site-packages/geoip2/database.py" in __init__
82. self._db_reader = maxminddb.open_database(filename, mode)
File "/home/myuser/Env/virtenv/local/lib/python2.7/site-packages/maxminddb/__init__.py" in open_database
37. return maxminddb.reader.Reader(database, mode)
File "/home/myuser/Env/virtenv/local/lib/python2.7/site-packages/maxminddb/reader.py" in __init__
52. db_file.fileno(), 0, access=mmap.ACCESS_READ)
Exception Type: error at /
Exception Value: [Errno 12] Cannot allocate memory
局部变量是：
Variable Value
database '/home/myuser/Env/virtenv/myproject/geoip/GeoLite2-City.mmdb'
db_file <closed file '/home/myuser/Env/virtenv/myproject/geoip/GeoLite2-City.mmdb', mode 'rb' at 0x7f8c5cf5d390>
mode 0
self <maxminddb.reader.Reader object at 0x7f8c5cf5f550>
我使用 Virtualbox，我的客户操作系统是Ubuntu 16.04. 我在那里有 4GB 交换文件。如果我释放一些 RAM，问题仍然存在。不过，这不应该是操作系统级别的内存问题，因为我可以在 shell 中创建 GeoIP2 对象，也可以手动运行服务器。
接下来我检查的是geoip我的项目中的目录由www-data775 拥有并拥有。 (GeoLite2-City.mmdb和GeoLite2-Country.mmdb) 中的两个文件也由www-data774 拥有并拥有。
/etc/systemd/system/uwsgi.service包含：
[Unit]
Description=uWSGI Emperor service
[Service]
ExecStartPre=/bin/bash -c 'mkdir -p /run/uwsgi; chown www-data:www-data /run/uwsgi'
ExecStart=/usr/local/bin/uwsgi --emperor /etc/uwsgi/sites
Restart=always
KillSignal=SIGQUIT
Type=notify
NotifyAccess=all
[Install]
WantedBy=multi-user.target
/etc/uwsgi/sites/my_site.ini包含：
[uwsgi]
project = myproject
base = /home/myuser
home = %(base)/Env/virtenv/%(project)
binary-path = /usr/local/bin/uwsgi
chdir = %(home)
chmod-socket = 660
chown-socket = www-data:www-data
#emperor = true
#enable-threads = true
gid = www-data
limit-as = 1024
logto = /tmp/uwsgi.log
master = true
module = myproject.wsgi:application
pidfile = /opt/logs/uwsgi/master.pid
# number of cores on machine
processes = 2
python-path = %(home)
py-autoreload = 2
socket = /run/uwsgi/%(project).sock
uid = www-data
vacuum = true
virtualenv = %(base)/Env/virtenv
vhost = true
workers = 4
env = AWS_KEY=***************
env = AWS_SECRET=***************
env = DJANGO_SETTINGS_MODULE=myproject.settings.local
env = GMAIL_PASS=***************
env = PSQL_PASS=***************
env = SECRET_KEY=*********************************************
我想知道限制在哪里uWSGI？