pymysql：Mysql拒绝从远程访问的解决办法
pymysql连接数据库
# 导入pymysql模块
import pymysql # 连接database
conn = pymysql.connect(
host="192.168.1.1",
user="root",
password="password",
db ="test",
charset ="utf8") # 得到一个可以执行SQL语句的光标对象
cursor = conn.cursor() # 执行完毕返回的结果集默认以元组显示
# 得到一个可以执行SQL语句并且将结果作为字典返回的游标
# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor) # 定义要执行的SQL语句
sql = "select * from account" # 执行SQL语句
cursor.execute(sql) # 关闭光标对象
cursor.close() # 关闭数据库连接
conn.close()
报错内容
Traceback (most recent call last):
File "C:/Pycham/Mysql/test.py", line 10, in <module>
charset ="utf8")
File "C:\Pycham\venv\lib\site-packages\pymysql\__init__.py", line 94, in Connect
return Connection(*args, **kwargs)
File "C:\Pycham\venv\lib\site-packages\pymysql\connections.py", line 325, in __init__
self.connect()
File "C:\Pycham\venv\lib\site-packages\pymysql\connections.py", line 598, in connect
self._get_server_information()
File "C:\Pycham\venv\lib\site-packages\pymysql\connections.py", line 975, in _get_server_information
packet = self._read_packet()
File "C:\Pycham\venv\lib\site-packages\pymysql\connections.py", line 684, in _read_packet
packet.check_error()
File "C:\Pycham\venv\lib\site-packages\pymysql\protocol.py", line 220, in check_error
err.raise_mysql_exception(self._data)
File "C:\Pycham\venv\lib\site-packages\pymysql\err.py", line 109, in raise_mysql_exception
raise errorclass(errno, errval)
pymysql.err.InternalError: (1130, "Host '219.139.78.81' is not allowed to connect to this MariaDB server")
解决办法
Mysql必须开启远程访问权限 才允许远程连接。
root帐户是无法远程登陆的，只可以本地登陆。
1.使用mysql数据库
use mysql;
2.添加用户允许从任何主机连接到mysql服务器
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'password' WITH GRANT OPTION;
允许任何IP地址（上面的 % 就是这个意思）的电脑使用root用户 和密码（password）来访问这个MySQL Server 。
如果你想允许用户root从ip为192.168.1.1的主机连接到mysql服务器，并使用password作为密码 GRANT ALL PRIVILEGES ON *.* TO 'root'@'192.168.1.1' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;
如果你想允许用户root从ip为192.168.1.1的主机连接到mysql服务器的dk数据库，并使用password作为密码 GRANT ALL PRIVILEGES ON dk.* TO 'root'@'192.168.1.1' IDENTIFIED BY 'password' WITH GRANT OPTION;
FLUSH PRIVILEGES;
3.及时生效
FLUSH PRIVILEGES
4.测试
# 导入pymysql模块
import pymysql # 连接database
conn = pymysql.connect(
host="192.168.1.1",
user="root",
password="password",
db ="test",
charset ="utf8") # 得到一个可以执行SQL语句的光标对象
cursor = conn.cursor() # 执行完毕返回的结果集默认以元组显示
# 得到一个可以执行SQL语句并且将结果作为字典返回的游标
# cursor = conn.cursor(cursor=pymysql.cursors.DictCursor) # 定义要执行的SQL语句
sql = "select version()" # 执行SQL语句
cursor.execute(sql) # #使用fetchone()方法获取一条数据
data = cursor.fetchone()
print("Mysql version : %s"%data) # 关闭光标对象
cursor.close() # 关闭数据库连接
conn.close()