安装MySql数据库。但是在MySql被Oracle收购之后，很多开源支持者就转而使用MariaDb了。不过MariaDb也和MySql兼容的，所以基本不用有什么担心。由于ArchLinux只带了MariaDb，所以我们就用MariaDb来代替MySql。
安装MariaDb和其客户端工具，
sudo pacman -S mariadb mariadb-clients
安装完成之后，会出现如何开启MariaDb的提示：
:: You need to initialize the MariaDB data directory prior to starting the service. This can be done with mysql_install_db command, e.g.: mysql_install_db –user=mysql –basedir=/usr –datadir=/var/lib/mysql
根据提示，我们运行如下命令就可以初始化MariaDb的数据目录了。
sudo mysql_install_db --user=mysql --basedir=/usr --datadir=/var/lib/mysql在经过一长串提示信息之后，就会出现相应的如何开启MariaDb的帮助信息：
To start mysqld at boot time you have to copysupport-files/mysql.server to the right place for your system
PLEASE REMEMBER TO SET A PASSWORD FOR THE MariaDB root USER !To do so, start the server, then issue the following commands:
'/usr/bin/mysqladmin' -u root password 'new-password''/usr/bin/mysqladmin' -u root -h mypc password 'new-password'
Alternatively you can run:'/usr/bin/mysql_secure_installation'
which will also give you the option of removing the testdatabases and anonymous user created by default. This isstrongly recommended for production servers.
See the MariaDB Knowledgebase at http://mariadb.com/kb or theMySQL manual for more instructions.
You can start the MariaDB daemon with:cd '/usr' ; /usr/bin/mysqld_safe --datadir='/var/lib/mysql'
You can test the MariaDB daemon with mysql-test-run.plcd '/usr/mysql-test' ; perl mysql-test-run.pl
Please report any problems at http://mariadb.org/jira
The latest information about MariaDB is available at http://mariadb.org/.You can find additional information about the MySQL part at:http://dev.mysql.comSupport MariaDB development by buying support/new features from MariaDBCorporation Ab. You can contact us about this at sales@mariadb.com.Alternatively consider joining our community based development effort:http://mariadb.com/kb/en/contributing-to-the-mariadb-project/同样根据提示，我们首先需要先启动MariaDb，
sudo systemctl start mysqld然后为root用户设置一个新密码，
mysqladmin -u root password '12345678' 然后尝试登录MariaDb，如果登录成功，说明配置完成了，
mysql -uroot -p12345678如果想要MariaDb开机自动启动，那么就运行以下命令，
sudo systemctl enable mysqld--------------------- 作者：过了即是客 来源： 原文：https://blog.csdn.net/u011054333/article/details/53203787 版权声明：本文为博主原创文章，转载请附上博文链接！
转载于:https://www.cnblogs.com/littlesuns/p/10942368.html
