ubuntu 18.04 安装 MySql，并配置远程连接

1.安装MySQL

在Ubuntu中，默认情况下，只有最新版本的MySQL包含在APT软件包存储库中,要安装它，只需更新服务器上的包索引并安装默认包apt

 

#命令1
sudo apt-get update
#命令2
sudo apt-get install mysql-server

 

2.配置MySQL

2.1 初始化配置

sudo mysql_secure_installation

配置选项如下：

#1
VALIDATE PASSWORD PLUGIN can be used to test passwords...
Press y|Y for Yes, any other key for No: N (我的选项)

#2
Please set the password for root here...
New password: (输入密码)
Re-enter new password: (重复输入)

#3
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them...
Remove anonymous users? (Press y|Y for Yes, any other key for No) : N (我的选项)

#4
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network...
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Y (我的选项)

#5
By default, MySQL comes with a database named 'test' that
anyone can access...
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : N (我的选项)

#6
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y (我的选项)

2.2 检查mysql服务状态

systemctl status mysql.service

 

 

3.配置远程访问

在Ubuntu下MySQL缺省是只允许本地访问的，使用workbench连接工具是连不上的；
如果你要其他机器也能够访问的话，需要进行配置；

sudo mysql -uroot -p

输入密码；然后输入命令：

GRANT ALL PRIVILEGES ON *.* TO 'root'@"%" IDENTIFIED BY "123456"; 

root为账户，123456为账户密码。

然后更新 PRIVILEGES

FLUSH PRIVILEGES;

 

 

 

 

重启mysql：

sudo systemctl restart mysql.service
#或者
sudo /etc/init.d/mysql restart

#开启mysql命令

sudo systemctl start mysql.service

#关闭mysql命令

sudo systemctl stop mysql.service

修改配置文件，把127.0.0.0 的那一行前面加个#号，：wq保存

sudo vim /etc/mysql/mysql.conf.d/mysqld.cnf #打开这个文件