Linux安装MySQL并修改用户信息

os:Ubuntu18.10

1.使用apt-get安装MySQL，默认安装5.7

sudo apt-get install mysql-server

2.使用默认账号登录MySQL

sudo vi /etc/mysql/debian.cnf

# Automatically generated for Debian scripts. DO NOT TOUCH!
[client]
host     = localhost
user     = debian-sys-maint
password = ei5QoLgDYm8IAN6f
socket   = /var/run/mysqld/mysqld.sock
[mysql_upgrade]
host     = localhost
user     = debian-sys-maint
password = ei5QoLgDYm8IAN6f
socket   = /var/run/mysqld/mysqld.sock

3.修改用户信息

use mysql;
update user set authentication_string=password('new password') where user='new username';
update user set plugin='mysql_native_password';
flush privileges;
quit;