数据库版本信息
[root@db02 ~]# mysql --version mysql Ver 14.14 Distrib 5.6.36, for Linux (x86_64) using EditLine wrapper
选项
[root@db02 ~]# mysqladmin --help | less create databasename Create a new database debug Instruct server to write debug information to log drop databasename Delete a database and all its tables extended-status Gives an extended status message from the server flush-hosts Flush all cached hosts flush-logs Flush all logs flush-status Clear status variables flush-tables Flush all tables flush-threads Flush the thread cache flush-privileges Reload grant tables (same as reload) kill id,id,... Kill mysql threads password [new-password] Change old password to new-password in current format old-password [new-password] Change old password to new-password in old format ping Check if mysqld is alive processlist Show list of active threads in server reload Reload grant tables refresh Flush all tables and close and open logfiles shutdown Take server down status Gives a short status message from the server start-slave Start slave stop-slave Stop slave variables Prints variables available version Get version info from server
修改用户密码：
[root@db02 ~]# mysql -uroot -p123 -e 'select user,host,password from mysql.user' +------+-----------+-------------------------------------------+ | user | host | password | +------+-----------+-------------------------------------------+ | root | localhost | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | | root | 127.0.0.1 | | | root | 10.0.0.% | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | +------+-----------+-------------------------------------------+修改密码为123456
[root@db02 ~]# mysqladmin -uroot -p123 password '123456' Warning: Using a password on the command line interface can be insecure. # 提示错误，密码不符合 [root@db02 ~]# mysql -uroot -p123 -e 'select user,host,password from mysql.user' Warning: Using a password on the command line interface can be insecure. ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES) # 使用修改后的密码 [root@db02 ~]# mysql -uroot -p123456 -e 'select user,host,password from mysql.user' Warning: Using a password on the command line interface can be insecure. +------+-----------+-------------------------------------------+ | user | host | password | +------+-----------+-------------------------------------------+ | root | localhost | *6BB4837EB74329105EE4568DDA7DC67ED2CA2AD9 | | root | 127.0.0.1 | | | root | 10.0.0.% | *23AE809DDACAF96AF0FD78ED04B6A265E05AA257 | +------+-----------+-------------------------------------------+
使用安全模式关闭数据库
[root@db02 ~]# mysqladmin -uroot -p123456 shutdown [root@db02 ~]# netstat -lntup | grep mysql [root@db02 ~]# lsof -i:3306 [root@db02 ~]#
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