nova mysql 2013错误_ERROR nova.servicegroup.drivers.db DBConnectionError: (pymysql.err.OperationalErro...

这个错误通常表示数据库连接出现了问题，可能是由于数据库服务不可用、网络故障、数据库连接配置错误等原因导致的。解决这个问题的方法包括：

1. 检查数据库服务是否运行正常，可以通过命令行或者图形化工具检查数据库服务状态，并确保服务已经启动。

2. 检查网络连接是否正常，可以通过 ping 命令或者 telnet 命令测试数据库服务的连通性。

3. 检查数据库连接配置是否正确，包括数据库地址、端口、用户名、密码等信息是否正确。

4. 检查数据库的权限设置，确保nova服务具有访问数据库的权限。

5. 如果以上方法都无法解决问题，可以尝试重启nova服务或者数据库服务，或者重新安装nova或者数据库服务。

相关问题

Exception in Tkinter callback Traceback (most recent call last): File "D:\python\lib\tkinter\__init__.py", line 1892, in __call__ return self.func(*args) File "D:\桌面\mx_B\March\高景报料界面.py", line 46, in auto_insert1 cursor.execute("INSERT INTO (name, age, email) bool (?, ?, ?)") File "D:\python\lib\site-packages\pymysql\cursors.py", line 148, in execute result = self._query(query) File "D:\python\lib\site-packages\pymysql\cursors.py", line 310, in _query conn.query(q) File "D:\python\lib\site-packages\pymysql\connections.py", line 548, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "D:\python\lib\site-packages\pymysql\connections.py", line 775, in _read_query_result result.read() File "D:\python\lib\site-packages\pymysql\connections.py", line 1156, in read first_packet = self.connection._read_packet() File "D:\python\lib\site-packages\pymysql\connections.py", line 725, in _read_packet packet.raise_for_error() File "D:\python\lib\site-packages\pymysql\protocol.py", line 221, in raise_for_error err.raise_mysql_exception(self._data) File "D:\python\lib\site-packages\pymysql\err.py", line 143, in raise_mysql_exception raise errorclass(errno, errval) pymysql.err.ProgrammingError: (1064, "You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '(name, age, email) bool (?, ?, ?)' at line 1")

这是一个 Python 中使用 PyMySQL 操作 MySQL 数据库时出现的错误。错误信息显示 SQL 语句存在语法错误，检查一下 SQL 语句的语法是否正确。根据错误信息，可能是 INSERT INTO 语句中字段名的格式不正确，或者是 VALUES 关键字缺失等问题导致的。建议将 SQL 语句拆分成多行，逐行检查语法是否正确。

Traceback (most recent call last): File "E:/PC/sql.py", line 15, in <module> cur.execute("INSERT INTO student.csv VALUES (1234567,abc,计算机,2001/6/6,4,4500);"); File "F:\Python\envs\PC\lib\site-packages\pymysql\cursors.py", line 148, in execute result = self._query(query) File "F:\Python\envs\PC\lib\site-packages\pymysql\cursors.py", line 310, in _query conn.query(q) File "F:\Python\envs\PC\lib\site-packages\pymysql\connections.py", line 548, in query self._affected_rows = self._read_query_result(unbuffered=unbuffered) File "F:\Python\envs\PC\lib\site-packages\pymysql\connections.py", line 775, in _read_query_result result.read() File "F:\Python\envs\PC\lib\site-packages\pymysql\connections.py", line 1156, in read first_packet = self.connection._read_packet() File "F:\Python\envs\PC\lib\site-packages\pymysql\connections.py", line 725, in _read_packet packet.raise_for_error() File "F:\Python\envs\PC\lib\site-packages\pymysql\protocol.py", line 221, in raise_for_error err.raise_mysql_exception(self._data) File "F:\Python\envs\PC\lib\site-packages\pymysql\err.py", line 143, in raise_mysql_exception raise errorclass(errno, errval) pymysql.err.ProgrammingError: (1146, "Table 'student.csv' doesn't exist")

根据报错信息可以看出，你在执行SQL语句时访问了一个名为"student.csv"的表，但是该表并不存在，所以会抛出"Table 'student.csv' doesn't exist"的异常。你需要确认一下表的名字是否正确，以及该表是否已经被创建。如果表名正确，但是表不存在，那么你需要先创建该表，然后再执行插入数据的操作。