Problem Description:
installation environment CentOS7.5, MySql forget the password, the solution is as follows:
1. Skip MySQL password authentication
1.1 Add skip-grant-tables information [mysqld] down, save and exit
[root@qfx_centos sbin]# vi /etc/my.cnf
1.2 Restart MySql service
[root@qfx_centos ~]# systemctl stop mysqld.service
[root@qfx_centos ~]# systemctl start mysqld.service
2. Modify the MySQL password
2.1 Login MySql (the password is blank, press Enter), refresh the authority information
#登录
[root@qfx_centos ~]# mysql -uroot -p
#更新权限
mysql> flush privileges;
2.2 update password, refresh the authority information
#更新密码
mysql> alter user 'root'@'localhost' identified by 'abc123_';
#更新权限
mysql> flush privileges;
3. Restore MySql permission verification function
3.1 Exit MySql, remove the skip-grant-tables to add information from the /etc/my.cnf
#退出
mysql> quit
#编辑 /etc/my.cnf，去掉 skip-grant-tables 信息
[root@qfx ~]# vi /etc/my.cnf
3.2 Service to restart the MySql again
[root@qfx_centos ~]# systemctl stop mysqld.service
[root@qfx_centos ~]# systemctl start mysqld.service
4. Test connector
