1.查看系统已经安装的mysql

rpm -qa | grep mysql

2.删除

rpm -e --nodeps  *****

3. 下载

wget http://repo.mysql.com/mysql57-community-release-el6-10.noarch.rpm

4.安装

yum -y localinstall mysql57-community-release-el6-10.noarch.rpm

5.安装成功后在/etc/yum.repos.d/下会多出几个mysql的yum源的配置

ls -lh /etc/yum.repos.d/

6.安装mysql

yum -y install mysql-community-server

7.查看版本信息

 mysql -V

8.启动mysql

service mysqld start

查看状态：

service mysqld status

加入开机启动：

chkconfig mysqld on

9.配置数据库

vi  /etc/my.cnf

# 修改字符编码为utf8

character_set_server = utf8

init_connect = 'SET NAMES utf8'

# 数据库是否区分大小写，0：区分大小写，1：不区分大小写

lower_case_table_names=1

10.重启

service mysqld restart

11.查看初始密码

grep 'temporary password' /var/log/mysqld.log

12.进入数据库，修改密码

alter user 'root'@'localhost' identified by '123456';

报错：ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

解决： set global validate_password_policy=LOW;

刷新权限

flush privileges;

13.查看数据库的字符集是否为配置的 utf8

show variables like "%character%";show variables like "%collation%";

14.navicat 连接mysql

报错：1130 - Host XXX is not allowed to connect to this MySQL server。

解决：进入mysql

use msyql

update user set host = '%' where user ='root';

grant all privileges on *.* to 'root'@'%' identified by '123456';

flush privileges;