Centos7.2安装mysql

1、方法一：安装mariadb

MariaDB数据库管理系统是MySQL的一个分支，采用GPL授权许可 MariaDB的目的是完全兼容MySQL，包括API和命令行，使之能轻松成为MySQL的代替品。MariaDB由MySQL的创始人Michael Widenius（英语：Michael Widenius）主导开发，他早前将自己创建的公司MySQL AB卖给了SUN，此后，随着SUN被甲骨文收购，MySQL的所有权也落入Oracle的手中。MariaDB名称来自Michael Widenius的女儿Maria的名字。

安装mariadb，输入安装命令

[root@localhost home]# yum install mariadb-server mariadb

mariadb数据库的相关命令是：

   systemctl start mariadb  #启动MariaDB

   systemctl stop mariadb  #停止MariaDB

   systemctl restart mariadb  #重启MariaDB

   systemctl enable mariadb  #设置开机启动

先启动数据库

  [root@yl-web yl]# systemctl start mariadb

  默认无密码

[root@localhost lzh]# mysql -u root -p

Enter password:

Welcome to the MariaDB monitor.  Commands end with ; or \g.

Your MariaDB connection id is 6

Server version: 5.5.52-MariaDB MariaDB Server

 

Copyright (c) 2000, 2016, Oracle, MariaDB Corporation Ab and others.

 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 

 

MariaDB [(none)]> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| test               |

+--------------------+

4 rows in set (0.01 sec)

 

 

2、方法二：官网下载安装mysql-server

# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm

# rpm -ivh mysql-community-release-el7-5.noarch.rpm

# yum install mysql-community-server

安装成功后重启mysql服务

    # service mysqld restart

初次安装mysql，root账户没有密码

[root@localhost lzh]# mysql -u root

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 3

Server version: 5.6.26 MySQL Community Server (GPL)

 

Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.

 

Oracle is a registered trademark of Oracle Corporation and/or its

affiliates. Other names may be trademarks of their respective

owners.

 

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

 

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| mysql              |

| performance_schema |

| test               |

+--------------------+

4 rows in set (0.01 sec)

设置密码

mysql> set password for 'root'@'localhost' =password('password');

Query OK, 0 rows affected (0.00 sec)

安装完以后mariadb自动就被替换了，将不再生效。