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sudo apt updatesudo apt-get install mysql-serversudo mysql_secure_installation

Securing the MySQL server deployment.Connecting to MySQL using a blank password.VALIDATE PASSWORD PLUGIN can be used to test passwordsand improve security. It checks the strength of passwordand allows the users to set only those passwords which aresecure enough. Would you like to setup VALIDATE PASSWORD plugin?Press y|Y for Yes, any other key for No: N（选择N，不会进行密码的强校验）Please set the password for root here.New password: Re-enter new password: By default, a MySQL installation has an anonymous user,allowing anyone to log into MySQL without having to havea user account created for them. This is intended only fortesting, and to make the installation go a bit smoother.You should remove them before moving into a productionenvironment.Remove anonymous users? (Press y|Y for Yes, any other key for No) : N（选择N，不删除匿名用户） ... skipping.Normally, root should only be allowed to connect from'localhost'. This ensures that someone cannot guess atthe root password from the network.Disallow root login remotely? (Press y|Y for Yes, any other key for No) : N（选择N，允许root远程连接） ... skipping.By default, MySQL comes with a database named 'test' thatanyone can access. This is also intended only for testing,and should be removed before moving into a productionenvironment.Remove test database and access to it? (Press y|Y for Yes, any other key for No) : N（选择N，不删除test数据库） ... skipping.Reloading the privilege tables will ensure that all changesmade so far will take effect immediately.Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Y（选择Y，修改权限立即生效）Success.All done!

sudo mysql -u root -p

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