Xiaohan practical operation-how to modify Mysql password after forgetting

surroundings:

centos 7.5 mysql version 5.5

1) Download the database

[root@hya ~]# yum -y install mariadb mariadb-server
[root@hya ~]# rpm -qa mariadb-*
mariadb-libs-5.5.65-1.el7.x86_64
mariadb-server-5.5.65-1.el7.x86_64

2) Start the database and set a password

[root@hya ~]# systemctl  start mariadb
[root@hya ~]# ss -tnl
State       Recv-Q Send-Q       Local Address:Port                      Peer Address:Port              
LISTEN      0      50                       *:3306                                 *:* 
[root@hya ~]# mysqladmin -uroot password 'hya123';
或者也可以
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mysql> use  mysql;
mysql> update user set password=PASSWORD('hya123') where user='root';
mysql> flush privileges;
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