linux mysql修改密碼命令
linux mysql修改密碼命令
想知道linux下怎么修改密碼嗎?下面由學(xué)習(xí)啦小編為大家整理了linux mysql修改密碼命令,希望大家喜歡!
linux mysql修改密碼命令
1.修改root密碼
linux mysql修改密碼命令方法1:使用mysqladmin命令
--適用于記得root舊密碼,修改root密碼
語(yǔ)法:
mysqladmin -u用戶名 -p舊密碼 password 新密碼
例如:
# mysqladmin -u root -proot password mysql
--注意:如當(dāng)舊密碼輸入錯(cuò)誤時(shí)會(huì)報(bào)如下錯(cuò)誤
# mysqladmin -u root -proot1 password mysql
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: YES)'
linux mysql修改密碼命令方法2:直接更新user表password字段
--適用于忘記root密碼,而對(duì)root密碼進(jìn)行重置
Step 1: 修改MySQL的登錄設(shè)置
# vi /etc/my.cnf
--windows系統(tǒng)是my.ini文件
--在[mysqld]的段中加上一句:skip-grant-tables,如沒(méi)有[mysqld]字段,可手動(dòng)添加上
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
skip-name-resolve
skip-grant-tables
Step 2: 重新啟動(dòng)mysql
[root@gc ~]# service mysql restart
Shutting down MySQL..[確定]
Starting MySQL...[確定]
Step 3: 登錄并修改MySQL的root密碼
--此時(shí)直接用mysql即可無(wú)需密碼即可進(jìn)入數(shù)據(jù)庫(kù)了
[root@gc ~]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.5.24 MySQL Community Server (GPL)
Copyright (c) 2000, 2011, 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> use mysql;
Database changed
mysql> update user set password=password('new_password') where user='root';
Query OK, 5 rows affected (0.00 sec)
Rows matched: 5 Changed: 5 Warnings: 0
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)
--注意:如果沒(méi)做step1,直接用mysql登錄時(shí)會(huì)報(bào)如下錯(cuò)誤
[root@gc ~]# mysql
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)
Step 4: 將MySQL的登錄設(shè)置修改回來(lái)
再刪除/etc/my.cnf文件中的skip-grant-tables
Step 5: 重新啟動(dòng)mysql
[root@gc ~]# service mysql restart
Shutting down MySQL..[確定]
Starting MySQL...[確定]
2.修改mysql其它用戶密碼
同樣,普通用戶也可以用上面的方法
--使用mysqladmin命令
[root@njdyw ~]# mysqladmin -u user1 -ppass1 password pass2
--直接修改數(shù)據(jù)庫(kù)表
[root@njdyw ~]# mysql -u user1 -ppass1 –Dmysql
mysql> update user set password=password('pass2') where user='user1';
mysql> flush privileges;