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本文教你如何在CentOS 7服务器中安装和配置MariaDB 10.4数据库，按照下面提供的步骤操作即可，下面介绍的方法适用于CentOS 7系统版本。
在CentOS 7服务器中安装MariaDB 10.4的方法 一、更新CentOS 7操作系统 确保所运行的是最新的CentOS 7服务器，运行以下命令： sudo yum -y update 二、添加MariaDB 10.4存储库 更新CentOS 7系统后，将MariaDB YUM存储库添加到CentOS 7服务器： cat >/etc/yum.repos.d/MariaDB.repo<<EOF [mariadb] name = MariaDB baseurl = http://yum.mariadb.org/10.4/centos7-amd64 gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB gpgcheck=1 EOF 然后更新yum缓存索引： sudo yum makecache fast 三、在CentOS 7中安装MariaDB 10.4的方法 使用yum软件包管理器安装MariaDB 10.4： sudo yum -y install MariaDB-server MariaDB-client 有关已安装软件包的更多详细信息，请运行$ rpm -qi MariaDB-server，信息如下：
可以看到版本号是10.4.1 x86_64，所采用的操作系统是CentOS，大小是582437198，MariaDB-server-10.4.1-1.el7.centos.src.rpm为源RPM，许可为GPLv2。 启动并启用MariaDB服务： sudo systemctl enable --now mariadb 四、保护MariaDB数据库服务器 现在在CentOS 7上安装了MariaDB 10.4，通过运行mysql_secure_installation来保护它： $ mysql_secure_installation ##################### NOTE: RUNNING ALL PARTS OF THIS SCRIPT IS RECOMMENDED FOR ALL MariaDB SERVERS IN PRODUCTION USE! PLEASE READ EACH STEP CAREFULLY! In order to log into MariaDB to secure it, we'll need the current password for the root user. If you've just installed MariaDB, 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): OK, successfully used password, moving on... Setting the root password ensures that nobody can log into the MariaDB root user without the proper authorisation. Set root password? [Y/n] y New password: Re-enter new password: Password updated successfully! Reloading privilege tables.. ... Success! By default, a MariaDB installation has an anonymous user, allowing anyone to log into MariaDB 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 ... 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 ... Success! By default, MariaDB 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 - 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 ... Success! Cleaning up... All done! If you've completed all of the above steps, your MariaDB installation should now be secure. Thanks for using MariaDB! ##################### 登录并检查MariaDB版本： $ mysql -u root -p ##################### Enter password: Welcome to the MariaDB monitor. Commands end with ; or \g. Your MariaDB connection id is 18 Server version: 10.4.1-MariaDB MariaDB Server Copyright (c) 2000, 2018, Oracle, MariaDB Corporation Ab and others. Type 'help;' or '\h' for help. Type '\c' to clear the current input statement. MariaDB [(none)]> SELECT VERSION(); VERSION() 10.4.1-MariaDB 1 row in set (0.001 sec) MariaDB [(none)]> QUIT Bye ##################### 还可以使用以下命令来检查版本： # mysql -V mysql Ver 15.1 Distrib 10.4.1-MariaDB, for Linux (x86_64) using readline 5.1 所安装的是10.4.1版本，至此，你可以在CentOS 7服务器中运行MariaDB 10.4数据库了。
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