【发布时间】：2015-08-22 04:43:28
【问题描述】：
为什么和mariadb有关系？我全新安装了 CentOS 7，并想安装 MySql 社区版本。好像说要先安装Mariadb server？
# yum install mysql-community-server
Loaded plugins: fastestmirror, langpacks
Loading mirror speeds from cached hostfile
* base: linux.mirrors.es.net
* extras: linux.mirrors.es.net
* updates: linux.mirrors.es.net
Resolving Dependencies
--> Running transaction check
---> Package mariadb-server.x86_64 1:5.5.35-3.el7 will be obsoleted
--> Processing Dependency: mariadb-server for package: akonadi-mysql-1.9.2-4.el7.x86_64
---> Package mysql-community-server.x86_64 0:5.6.25-2.el7 will be obsoleting
--> Processing Dependency: mysql-community-common(x86-64) = 5.6.25-2.el7 for package: mysql-community-server-5.6.25-2.el7.x86_64
--> Processing Dependency: mysql-community-client(x86-64) = 5.6.25-2.el7 for package: mysql-community-server-5.6.25-2.el7.x86_64
--> Running transaction check
---> Package mariadb.x86_64 1:5.5.35-3.el7 will be obsoleted
---> Package mariadb-server.x86_64 1:5.5.35-3.el7 will be updated
---> Package mariadb-server.x86_64 1:5.5.41-2.el7_0 will be an update
--> Processing Dependency: mariadb-libs(x86-64) = 1:5.5.41-2.el7_0 for package: 1:mariadb-server-5.5.41-2.el7_0.x86_64
--> Processing Dependency: mariadb(x86-64) = 1:5.5.41-2.el7_0 for package: 1:mariadb-server-5.5.41-2.el7_0.x86_64
---> Package mysql-community-client.x86_64 0:5.6.25-2.el7 will be obsoleting
---> Package mysql-community-common.x86_64 0:5.6.25-2.el7 will be installed
--> Running transaction check
---> Package mariadb.x86_64 1:5.5.35-3.el7 will be updated
---> Package mariadb.x86_64 1:5.5.41-2.el7_0 will be an update
---> Package mariadb-libs.x86_64 1:5.5.35-3.el7 will be obsoleted
---> Package mariadb-libs.x86_64 1:5.5.35-3.el7 will be updated
---> Package mariadb-libs.x86_64 1:5.5.41-2.el7_0 will be an update
---> Package mysql-community-libs.x86_64 0:5.6.25-2.el7 will be obsoleting
Removing mariadb-server.x86_64 1:5.5.41-2.el7_0 - u due to obsoletes from mysql-community-server.x86_64 0:5.6.25-2.el7 - u
Removing mariadb.x86_64 1:5.5.41-2.el7_0 - u due to obsoletes from mysql-community-client.x86_64 0:5.6.25-2.el7 - u
Removing mariadb-libs.x86_64 1:5.5.41-2.el7_0 - u due to obsoletes from mysql-community-libs.x86_64 0:5.6.25-2.el7 - u
--> Restarting Dependency Resolution with new changes.
--> Running transaction check
---> Package mariadb.x86_64 1:5.5.41-2.el7_0 will be an update
---> Package mariadb-libs.x86_64 1:5.5.41-2.el7_0 will be an update
---> Package mariadb-server.x86_64 1:5.5.41-2.el7_0 will be an update
--> Processing Dependency: mariadb-server for package: akonadi-mysql-1.9.2-4.el7.x86_64
--> Finished Dependency Resolution
Error: Package: akonadi-mysql-1.9.2-4.el7.x86_64 (@anaconda)
Requires: mariadb-server
Removing: 1:mariadb-server-5.5.35-3.el7.x86_64 (@anaconda)
mariadb-server = 1:5.5.35-3.el7
Obsoleted By: mysql-community-server-5.6.25-2.el7.x86_64 (mysql56-community)
Not found
Updated By: 1:mariadb-server-5.5.41-2.el7_0.x86_64 (base)
mariadb-server = 1:5.5.41-2.el7_0
【问题讨论】：
-
MariaDB 是 MySQL 的兼容实现，并且已经安装在您的服务器上。但是安装 MySQL 社区发行版会取代它，据我所知，两者不能同时安装。似乎 akonadi 具有 MySQL 社区不满足的 mariadb 依赖项。你需要akonadi吗？ （KDE 桌面的一部分）
-
当前安装的 MariaDB 是否不能满足您的需求？通常由 MySQL 处理的所有事情都将由 mariadb 完成，包括二进制文件
/usr/bin/mysql和/usr/sbin/mysqld -
我在openshift有一个应用，数据库有MySql。我不确定是否需要 akonadi，但我使用的是 KDE 桌面。如果我卸载 MariaDB，它是否允许我安装 MySql？
-
另外，当我执行“mariadb”时，“找不到命令”。
-
它调用的可执行文件不是
mariadb，它只是mysql，因为它是一个完全兼容的替代品。在不更改原始 MariaDB 设置的情况下，在命令行上运行mysql（您可能首先需要通过sudo systemctl start mysqld.service启动服务器）。客户端应该启动并且提示将类似于MariaDB [(none)]>。以与 MySQL 相同的方式与它完全交互，使用它的应用程序不会看到差异。