CentOS7 on Amazon EC2(２) MySQL

CentOS7では、mariaDBなるDBになっているらしい！
Wikipedia MariaDB

１、インストール

mysqlをインストールしようとするとmariadbがインストールされる

$ sudo yum install mysql
Loaded plugins: fastestmirror
....
Dependencies Resolved

================================================================================
 Package             Arch          Version                    Repository   Size
================================================================================
Installing:
 mariadb             x86_64        1:5.5.41-2.el7_0           base        8.9 M
Installing for dependencies:
 mariadb-libs        x86_64        1:5.5.41-2.el7_0           base        754 k

Transaction Summary
================================================================================
Install  1 Package (+1 Dependent package)

Total download size: 9.7 M
Installed size: 53 M
Is this ok [y/d/N]: y
Downloading packages:
(1/2): mariadb-libs-5.5.41-2.el7_0.x86_64.rpm              | 754 kB   00:00     
(2/2): mariadb-5.5.41-2.el7_0.x86_64.rpm                   | 8.9 MB   00:00     
--------------------------------------------------------------------------------
Total                                               12 MB/s | 9.7 MB  00:00     
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : 1:mariadb-libs-5.5.41-2.el7_0.x86_64                         1/2 
  Installing : 1:mariadb-5.5.41-2.el7_0.x86_64                              2/2 
  Verifying  : 1:mariadb-5.5.41-2.el7_0.x86_64                              1/2 
  Verifying  : 1:mariadb-libs-5.5.41-2.el7_0.x86_64                         2/2 
Installed:
  mariadb.x86_64 1:5.5.41-2.el7_0                                               
Dependency Installed:
  mariadb-libs.x86_64 1:5.5.41-2.el7_0                                          
Complete!

２、バージョン確認

$ mysql --version
mysql  Ver 15.1 Distrib 5.5.41-MariaDB, for Linux (x86_64) using readline 5.1

mariadbになっている

３、Serverインストール

$ sudo yum install mariadb-server

４、サービス確認

$ systemctl list-unit-files | grep mariadb
mariadb.service                        disabled

無効になっている

５、サービス有効化

$ sudo systemctl enable mariadb.service
ln -s '/usr/lib/systemd/system/mariadb.service' '/etc/systemd/system/multi-user.target.wants/mariadb.service'
$ systemctl list-unit-files | grep mariadb
mariadb.service                        enabled 

６、サービス起動

$ sudo systemctl start mariadb.service