关于centos7 安装mysql（mariadb）的方式，centos7mariadb

关于centos7 安装mysql（mariadb）的方式，centos7mariadb

 今天在Linux主机（CentOS 7）安装（yum install方式）Mariadb（即开源MySQL）后，无法启动mariadb，其实是安装不完整，当然启动不了，更不用说输入"mysql -u root"提示Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)了 。没什么技术含量的解决方法开始了。

安装mariadb，先搜索一发：

$ sudo yum search mariadb

出现：

$ sudo yum search mariadb
Loaded plugins: langpacks
============================= N/S matched: mariadb =============================
mariadb-bench.x86_64 : MariaDB benchmark scripts and data
mariadb-devel.i686 : Files for development of MariaDB/MySQL applications
mariadb-devel.x86_64 : Files for development of MariaDB/MySQL applications
mariadb-embedded.i686 : MariaDB as an embeddable library
mariadb-embedded.x86_64 : MariaDB as an embeddable library
mariadb-embedded-devel.i686 : Development files for MariaDB as an embeddable : library
mariadb-embedded-devel.x86_64 : Development files for MariaDB as an embeddable  : library
mariadb-libs.i686 : The shared libraries required for MariaDB/MySQL clients
mariadb-libs.x86_64 : The shared libraries required for MariaDB/MySQL clients
mariadb-server.x86_64 : The MariaDB server and related files
mariadb.x86_64 : A community developed branch of MySQL
mariadb-test.x86_64 : The test suite distributed with MariaD

嗯，把 mariadb mariadb-bench mariadb-server mariadb-embdedeb mariadb-libs mariadb-server都安装：

$  yum install mariadb-embedded mariadb-libs mariadb-bench mariadb mariadb-sever

启动mariadb，再试试"mysql -u root“发现可以了，好吧，作为一个Archlinuxer表示centos（或者说rpm系列？）的mariadb打包分得真细。

哦，那些个什么service xx start的命令在很多新版本的linux发行版上已经不适用了，正确的打开方式是systemctl  [option] [xx],mariadb(mysql)使用:

$ systemctl start mariadb

centos何时用systematl的我不知道，至少centos7用systemctl。开机自启动：

$ systemctl enable mariadb