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
