今天在树莓派之中安装mysql，结果被我安装了mariadb，这样做很讨厌，但是也可以将就用。记录一下折腾的过程。
安装就还是使用sudo apt install mysql
1.安装之后需要使用工具进行一些简单的配置
sudo mysql_secure_installation
下面是配置的一个记录，抄别人的
NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MySQL SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MySQL to secure it, we'll need the current password for the root user. If you've just installed MySQL, and you haven't set the root password yet, the password will be blank, so you should just press enter here. Enter current password for root (enter for none): <–使用刚才得到的root的密码 NljqL63OYlGo5cqy OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MySQL root user without the proper authorisation. You already have a root password set, so you can safely answer 'n'. Change the root password? [Y/n] y <– 是否更换root用户密码，输入y并回车，强烈建议更换 New password: <– 设置root用户的密码 Re-enter new password: <– 再输入一次你设置的密码 Password updated successfully! Reloading privilege tables.. ... Success! 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. This is intended only for testing, and to make the installation go a bit smoother. You should remove them before moving into a production environment. Remove anonymous users? [Y/n] y <– 是否删除匿名用户,生产环境建议删除，所以输入y并回车 ... Success! 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? [Y/n] y <–是否禁止root远程登录,根据自己的需求选择Y/n并回车,建议禁止 ... Success! By default, MySQL comes with a database named 'test' that anyone can access. This is also intended only for testing, and should be removed before moving into a production environment. Remove test database and access to it? [Y/n] y <– 是否删除test数据库,输入y并回车 - Dropping test database... ... Success! - Removing privileges on test database... ... Success! Reloading the privilege tables will ensure that all changes made so far will take effect immediately. Reload privilege tables now? [Y/n] y 是否重新加载权限表，输入y并回车 ... Success! All done! If you've completed all of the above steps, your MySQL installation should now be secure. Thanks for using MySQL! Cleaning up...
2.修改 /etc/mysql/mariadb.conf.d/50-server.cnf 文件
设置正确的时区
[mysqld] default-time-zone = '+8:00'
设置可远程访问，设置之后3306端口就开放了
#bind-address = 127.0.0.1
之后在终端里输入
GRANT ALL PRIVILEGES ON *.* TO '需要开放的用户的用户名'@'需开放的地址' IDENTIFIED BY '用户密码' WITH GRANT OPTION;
flush privileges;
之后select表的时候就应该可以看到，多了一个用户，用此用户即可远程登录。当然，在此之前还是需要重启mysql服务器的。
sodo service mysql restart
备忘一下，mysql之中看所有数据库的命令是show databases，而不是show dbs，和mongodb不一样