背景
用docker構(gòu)建mysql容器后連接遇到以下問題
問題
Authentication plugin 'caching_sha2_password' cannot be loaded: dlopen(/usr/local/mysql/lib/plugin/caching_sha2_password.so, 2): image not found
mysqli_real_connect(): The server requested authentication method unknown to the client [caching_sha2_password]
mysqli_real_connect(): (HY000/2054): The server requested authentication method unknown to the client
解決方法一(docker)：
適用場景
- 第一次構(gòu)建容器/安裝
- 已安裝完成后新增用戶
配置
配置 mysql.cnf 配置默認身份驗證插件
[mysqld]
default_authentication_plugin = mysql_native_password
驗證是否生效
使用CLI進入MySQL
$ mysql -u root -p
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> SELECT Host, User, plugin from user;
+-----------+------------------+-----------------------+
| Host | User | plugin |
+-----------+------------------+-----------------------+
| % | root | mysql_native_password |
| localhost | mysql.infoschema | caching_sha2_password |
| localhost | mysql.session | caching_sha2_password |
| localhost | mysql.sys | caching_sha2_password |
| localhost | root | mysql_native_password |
+-----------+------------------+-----------------------+
5 rows in set (0.00 sec)
root用戶的身份驗證器插件已經(jīng)變?yōu)椋?strong>mysql_native_password
解決方法二：
適用場景
- MySQL 已成功安裝完成后
查看身份驗證類型
mysql> use mysql;
Database changed
mysql> SELECT Host, User, plugin from user;
+-----------+------------------+-----------------------+
| Host | User | plugin |
+-----------+------------------+-----------------------+
| % | root | caching_sha2_password |
| localhost | mysql.infoschema | caching_sha2_password |
| localhost | mysql.session | caching_sha2_password |
| localhost | mysql.sys | caching_sha2_password |
| localhost | root | caching_sha2_password |
+-----------+------------------+-----------------------+
5 rows in set (0.00 sec)
root 用戶的驗證器插件為 caching_sha2_password
修改身份驗證類型(修改密碼)
mysql> ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
Query OK, 0 rows affected (0.00 sec)
mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123456';
Query OK, 0 rows affected (0.01 sec)
使生效
mysql> FLUSH PRIVILEGES;
驗證是否生效
mysql> SELECT Host, User, plugin from user;
+-----------+------------------+-----------------------+
| Host | User | plugin |
+-----------+------------------+-----------------------+
| % | root | mysql_native_password |
| localhost | mysql.infoschema | caching_sha2_password |
| localhost | mysql.session | caching_sha2_password |
| localhost | mysql.sys | caching_sha2_password |
| localhost | root | mysql_native_password |
+-----------+------------------+-----------------------+
5 rows in set (0.00 sec)
