【CentOS 7MySQL經常使用操做1】，更改root密碼#180112
hellopasswdmysql
更改root密碼
- /usr/local/mysql/bin/mysql -uroot
- 更改環境變量PATH，增長mysql絕對路徑
- mysqladmin -uroot passwd ’123456‘
- mysql -uroot -p123456
- 密碼重置
- vi /etc/my.cnf #
- 重啓mysql服務 /etc/init.d/mysqld restart
- mysql -uroot
- use mysql;
- update user set password=password('aminglinux') where user='root';
[root@localhost ~]# ps aux | grep mysql root 2433 0.0 0.0 115392 1704 ? S 22:54 0:00 /bin/sh /usr/local/mysql/bin/mysqld_safe --datadir=/data/mysq --pid-file=/data/mysql/localhost.localdomain.pid mysql 2572 0.1 24.2 1300784 454492 ? Sl 22:54 0:04 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/data/mysql --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/data/mysql/localhost.localdomain.err --pid-file=/data/mysql/localhost.localdomain.pid --socket=/tmp/mysql.sock root 3133 0.0 0.0 112664 976 pts/0 S+ 23:45 0:00 grep --color=auto mysql [root@localhost ~]# mysql -uroot ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) [root@localhost ~]# ls /usr/local/mysql/bin/mysql /usr/local/mysql/bin/mysql [root@localhost ~]# export PATH=$PATH:/usr/local/mysql/bin/
進入mysqllinux
[root@localhost ~]# mysql -uroot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.36 MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> quit Bye
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.36 MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> quit Bye
永久生效環境變量sql
[root@localhost ~]# echo "export PATH=$PATH:/usr/local/mysql/bin/" >> /etc/profile [root@localhost ~]# source /etc/profile
使用quit退出mysql終端安全
mysql> quit Bye
設置mysql的root密碼dom
[root@localhost ~]# /usr/local/mysql/bin/mysqladmin -uroot password 123 Warning: Using a password on the command line interface can be insecure.
警告大體意思是說密碼用明文顯示，不安全socket
登陸mysqlui
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
拒絕登陸，須要密碼this
-p使用密碼登陸spa
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 4 Server version: 5.6.36 MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> quit Bye
修改登陸密碼rest
[root@localhost ~]# /usr/local/mysql/bin/mysqladmin -uroot -p'123' password '456' Warning: Using a password on the command line interface can be insecure.
指定密碼登陸
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot -p'456' Warning: Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 8 Server version: 5.6.36 MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> quit Bye
使用分號能夠區分特殊符號
忘記密碼
[root@localhost ~]# vi /etc/my.cnf
添加
2 skip-grant
忽略受權
[root@localhost ~]# vi /etc/my.cnf
1 [mysqld]
2 skip-grant
3 datadir=/data/mysql
4 socket=/tmp/mysql.sock
5 # Disabling symbolic-links is recommended to prevent assorted security risks
6 symbolic-links=0
7 # Settings user and group are ignored when systemd is used.
8 # If you need to run mysqld under a different user or group,
9 # customize your systemd unit file for mariadb according to the
10 # instructions in http://fedoraproject.org/wiki/Systemd
11
12 [mysqld_safe]
13 #log-error=/var/log/mariadb/mariadb.log
14 #pid-file=/var/run/mariadb/mariadb.pid
15
16 #
17 # include all files from the config directory
18 #
19 #!includedir /etc/my.cnf.d
[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.36 MySQL Community Server (GPL)
Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
使用mysql庫查看用戶密碼錶
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 * from 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 | password_expired | +-----------------------+------+-------------------------------------------+-------------+-------------+-------------+-------------+-------------+-----------+-------------+---------------+--------------+-----------+------------+-----------------+------------+------------+--------------+------------+-----------------------+------------------+--------------+-----------------+------------------+------------------+----------------+---------------------+--------------------+------------------+------------+--------------+------------------------+----------+------------+-------------+--------------+---------------+-------------+-----------------+----------------------+-----------------------+-----------------------+------------------+ | localhost | root | *531E182E2F72080AB0740FE2F2D689DBE0146E04 | 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 | mysql_native_password | | N | | localhost.localdomain | 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 | mysql_native_password | | N | | 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 | mysql_native_password | | N | | ::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 | mysql_native_password | | N | | localhost | | | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | | | | | 0 | 0 | 0 | 0 | mysql_native_password | NULL | N | | localhost.localdomain | | | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | N | | | | | 0 | 0 | 0 | 0 | mysql_native_password | NULL | N | +-----------------------+------+-------------------------------------------+-------------+-------------+-------------+-------------+-------------+-----------+-------------+---------------+--------------+-----------+------------+-----------------+------------+------------+--------------+------------+-----------------------+------------------+--------------+-----------------+------------------+------------------+----------------+---------------------+--------------------+------------------+------------+--------------+------------------------+----------+------------+-------------+--------------+---------------+-------------+-----------------+----------------------+-----------------------+-----------------------+------------------+ 6 rows in set (0.00 sec)
mysql> select password from user where user='root'; +-------------------------------------------+ | password | +-------------------------------------------+ | *531E182E2F72080AB0740FE2F2D689DBE0146E04 | | | | | | | +-------------------------------------------+ 4 rows in set (0.00 sec)
mysql> select password from user; +-------------------------------------------+ | password | +-------------------------------------------+ | *531E182E2F72080AB0740FE2F2D689DBE0146E04 | | | | | | | | | | | +-------------------------------------------+ 6 rows in set (0.00 sec)
更改用戶密碼錶
mysql> update user set password=password('123') where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> quit
Bye
[root@localhost ~]# vi /etc/my.cnf
刪除
2 skip-grant
[root@localhost ~]# vi /etc/my.cnf
1 [mysqld]
2 datadir=/data/mysql
3 socket=/tmp/mysql.sock
4 # Disabling symbolic-links is recommended to prevent assorted security risks
5 symbolic-links=0
6 # Settings user and group are ignored when systemd is used.
7 # If you need to run mysqld under a different user or group,
8 # customize your systemd unit file for mariadb according to the
9 # instructions in http://fedoraproject.org/wiki/Systemd
10
11 [mysqld_safe]
12 #log-error=/var/log/mariadb/mariadb.log
13 #pid-file=/var/run/mariadb/mariadb.pid
14
15 #
16 # include all files from the config directory
17 #
18 #!includedir /etc/my.cnf.d
[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL.... SUCCESS!
Starting MySQL. SUCCESS!
[root@localhost ~]# /usr/local/mysql/bin/mysql -uroot -p123 Warning: Using a password on the command line interface can be insecure. Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 1 Server version: 5.6.36 MySQL Community Server (GPL) Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved. Oracle is a registered trademark of Oracle Corporation and/or its affiliates. Other names may be trademarks of their respective owners. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. mysql> quit Bye
更改密碼中出現的錯誤
mysql> update user set password=password('123') where user='root';
ERROR 1046 (3D000): No database selected
須要更改用戶密碼前使用mysql庫use mysql;
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> update user set password=password('123') where user='root';
Query OK, 4 rows affected (0.00 sec)
Rows matched: 4 Changed: 4 Warnings: 0
mysql> quit
Bye
修改於 180112
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