ubuntu下mysql 8.0.28怎么安装配置

修改密码改了挺长时间，记录下安装过程

安装ssh服务:

sudo apt-get install openssh-server

启动ssh服务：

service sshd start

安装mysql服务器端：

sudo apt install -y mysql-server

安装mysql客户端：

sudo apt install -y mysql-client

安装完成后根据提示找到了密码文件：

/etc/mysql/debian.cnf

查看该文件显示如下：

# Automatically generated for Debian scripts. DO NOT TOUCH!
[client]
host     = localhost
user     = debian-sys-maint
password = kYq3G8iSzqfXIXqb
socket   = /var/run/mysqld/mysqld.sock
[mysql_upgrade]
host     = localhost
user     = debian-sys-maint
password = kYq3G8iSzqfXIXqb
socket   = /var/run/mysqld/mysqld.sock

修改配置文件:

sudo vim /etc/mysql/my.cnf

添加如下配置：

[mysql]
default-character-set=utf8
 
[mysqld]
port=3306
bind-address = 0.0.0.0
skip-grant-tables

重启数据库

sudo service mysql restart

使用对应的帐号和密码登陆到mysql中

mysql -udebian-sys-maint -pkYq3G8iSzqfXIXqb

修改root密码和host

use mysql;
grant all privileges on *.* to 'root'@'%' with grant option;
update user set host='%', authentication_string='' where user='root' ;
ALTER USER 'root'@'%' IDENTIFIED BY '1' PASSWORD EXPIRE NEVER;
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '1';
FLUSH PRIVILEGES;
quit;

退出后删除skip-grant-tables选项

如下：

[mysql]
default-character-set=utf8
 
[mysqld]
port=3306
bind-address = 0.0.0.0

重启mysql服务

sudo service mysql restart;

关闭防火墙

sudo service ufw disable; #关闭防火墙开机启动
sudo service ufw stop;    #关闭防火墙服务

在主机上使用navicat测试链接成功：

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