Mysql登錄后看不到數據庫

進入數據庫后，只能看到information_schema/test這兩個庫，其他的數據庫都看不到，這是權限出了問題。

關閉Mysql

/usr/local/mysql/support-files/mysql.server stop
#或者
service mysqld stop

用安全模式啟動Mysql，如果是自己通過tar包手動安裝的Mysql，mysqld_safe命令在“${mysql}/bin”下

mysqld_safe --skip-grant-tables

 執行這條命令后，當前ssh命令行會停住，如下圖

再打開一個ssh連接，登錄到mysql數據庫

mysql

修改mysql.user表

use mysql;
delete from `user`;
INSERT INTO `user` (`Host`, `User`, `Password`, `Select_priv`, `Insert_priv`, `Update_priv`, `Delete_priv`, `Create_priv`, `Drop_priv`, `Reload_priv`, `Shutdown_priv`, `Process_priv`, `File_priv`, `Grant_priv`, `References_priv`, `Index_priv`, `Alter_priv`, `Show_db_priv`, `Super_priv`, `Create_tmp_table_priv`, `Lock_tables_priv`, `Execute_priv`, `Repl_slave_priv`, `Repl_client_priv`, `Create_view_priv`, `Show_view_priv`, `Create_routine_priv`, `Alter_routine_priv`, `Create_user_priv`, `Event_priv`, `Trigger_priv`, `Create_tablespace_priv`, `ssl_type`, `ssl_cipher`, `x509_issuer`, `x509_subject`, `max_questions`, `max_updates`, `max_connections`, `max_user_connections`, `plugin`, `authentication_string`) VALUES 
('%','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0,'',''),
('127.0.0.1','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0,'',''),  ('::1','root','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0,'',''), ('localhost','','','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','Y','','','','',0,0,0,0,'','');

停止mysql

service mysqld stop

或者

${mysql}/support-files/mysql.server stop

以正常模式重新啟動

service mysqld start

或者

${mysql}/support-files/mysql.server start

啟動后登錄mysql數據庫，可以正常看到所有的數據庫了。