OperationalError:无法打开数据库文件

Question

Graphite抛出无法打开的数据库文件

tail -f /etc/httpd/logs/error_log 

这是setting.py文件配置

DATABASES = {
  'default': {
    'NAME': '/opt/graphite/webapp/test.db',
    'ENGINE': 'django.db.backends.sqlite3',
    'USER': '',
    'PASSWORD': '',
    'HOST': '',
    'PORT': ''
  }
}

DONE

python manage.py  syncdb

该文件存在于以下位置

[root@bash  graphite]# ls -l /opt/graphite/webapp/test.db
-rw-rw-rw- 1 nobody nobody 65536 Nov 11 22:22 /opt/graphite/webapp/test.db

它会抛出错误

[Tue Nov 11 22:24:15 2014] [error]   File "/usr/lib/python2.6/site-packages/django/db/backends/util.py", line 53, in execute
[Tue Nov 11 22:24:15 2014] [error]     return self.cursor.execute(sql, params)
[Tue Nov 11 22:24:15 2014] [error]   File "/usr/lib/python2.6/site-packages/django/db/backends/sqlite3/base.py", line 452, in execute
[Tue Nov 11 22:24:15 2014] [error]     return Database.Cursor.execute(self, query, params)
[Tue Nov 11 22:24:15 2014] [error] OperationalError: unable to open database file

Answer 1

检查您正在执行的用户的权限python manage.py syncdb.

此用户必须具有读取和写入文件的权限 /opt/graphite/webapp/test.db

并且还可以读取,写入和执行文件夹的权限 /opt/graphite/webapp/

尝试这个命令(从用户执行,启动python manage.py syncdb,可能是当前用户)

sudo chown `whoami`:`whoami` /opt/graphite/webapp/test.db  # change owner
sudo chmod o+rw /opt/graphite/webapp/test.db  # add rights

sudo chown `whoami`:`whoami` /opt/graphite/webapp/
sudo chmod o+rwx /opt/graphite/webapp/