centos7 mysql数据库安装和配置

1、安装yum源，已经下载安装包
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rpm -ivh epel-release-latest-7.noarch.rpm
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2、安装vim

yum -y install vim
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yum -y install wget
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yum -y install ruby
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3、Linux下添加磁盘、挂载，见挂载详情
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注意：关闭防火墙 systemctl stop firewalld.service
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4、mysql安装

5、官网下载安装mysql-server
5.1 官网下载rpm包 https://dev.mysql.com/downloads/repo/yum/
安装wget
yum -y install wget

# 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

6、安装成功后重启mysql服务

service mysqld restart

mysql_secure_installation（设置密码）

初次安装mysql，root账户没有密码

查看密码 cat /var/log/mysqld.log | grep password
grep 'temporary password' /var/log/mysqld.log

首次登录，修改密码：修改密码 set password for 'root'@'localhost' =password('your password');

查看安装路径 whereis mysql

mysql 登录mysql：mysql -u root -p
密码：ShiQq!123456
mariadb 密码：Seari@123456
查看密码 cat /var/log/mysqld.log | grep password
修改密码 set password for 'root'@'localhost' =password('password');
查看安装路径 whereis mysql
重启mysql：service mysqld restart

自启动mysql：systemctl enable mysqld

7、配置mysql，这里的字符编码必须和/usr/share/mysql/charsets/Index.xml中一致
详见：http://www.cnblogs.com/starof/p/4680083.html

8、远程连接设置
把在所有数据库的所有表的所有权限赋值给位于所有IP地址的root用户。
mysql> grant all privileges on *.* to root@'%'identified by 'password';
如果是新用户而不是root，则要先新建用户
mysql>create user 'username'@'%' identified by 'password';
此时就可以进行远程连接了。

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