ubuntu 卸载与重装mysql服务

彻底卸载mysql的文件以及配置

  291  sudo apt-get autoremove --purge mysql-server-5.*
  292  sudo apt-get remove mysql-server
  293  sudo apt-get autoremove mysql-server
  294  sudo apt-get remove mysql-common

  dpkg -l |grep ^rc|awk '{print $2}' |sudo xargs dpkg -P

安装mysql服务

	sudo apt install mysql-server

查看服务的初始账号、密码

	sudo vim /etc/mysql/debian.cnf 
	# Automatically generated for Debian scripts. DO NOT TOUCH!
	[client]
	host     = localhost
	user     = debian-sys-maint
	password = TLBzUjRwwDlNd6JI
	socket   = /var/run/mysqld/mysqld.sock
	[mysql_upgrade]
	host     = localhost
	user     = debian-sys-maint
	password = TLBzUjRwwDlNd6JI
	socket   = /var/run/mysqld/mysqld.sock

使用密码账号密码登录

	mysql -u  debian-sys-maint -p TLBzUjRwwDlNd6JI

修改登录账号密码

	查看数据库
	show databases；

	切换数据库
	use mysql;

	重置账户密码
	update user set authentication_string=PASSWORD("自定义密码") where user='root';
	
	update user set plugin="mysql_native_password";
	
	flush privileges;
	
	关闭
	quit;

使用新的账户密码登录即可