连接失败以及原因

Navicat for mysql连接mysql8.0.11失败,出现error 1251 - Client does not support authentication protocol requested by server, consider upgrading MySQL client.
Navicat for mysql连接mysql8.0.11出现error 1251 - Client does not support authentication protocol
出现这种情况的原因是mysql8 之前的版本中加密规则是mysql_native_password,而在mysql8之后,加密规则是caching_sha2_password。

解决方法

将登录密码的加密规则修改为mysql_native_password。

打开命令行,输入命令mysql -u root -p,再输入密码
Navicat for mysql连接mysql8.0.11出现error 1251 - Client does not support authentication protocol
输入命令:
ALTER USER ‘root’@‘localhost’ IDENTIFIED WITH mysql_native_password BY ‘password’; #以mysql_native_password的加密规则更新用户登录密码
FLUSH PRIVILEGES; #刷新权限
Navicat for mysql连接mysql8.0.11出现error 1251 - Client does not support authentication protocol
修改成功!

测试

Navicat for mysql连接mysql8.0.11出现error 1251 - Client does not support authentication protocol
Navicat for mysql重新连接,连接成功!

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