1、rpm安裝方式順序：
下載：

wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-community-server-5.7.19-1.el6.x86_64.rpm

安裝順序：

Installing : mysql-community-common-5.7.19-1.el6.x86_64
Installing : mysql-community-libs-5.7.19-1.el6.x86_64
Installing : mysql-community-libs-compat-5.7.19-1.el6.x86_64 
Installing : mysql
 
-community-client-5.7.19-1.el6.x86_64

2、yum安裝方式

下載：

wget https://dev.mysql.com/get/mysql57-community-release-el6-11.noarch.rpm

安裝：

rpm -ivh mysql57-community-release-el6-11.noarch.rpm
yum -y install mysql-community-server

3、卸載mysql5.7.19

rpm -qa|grep -i mysql
yum remove mysql-community-libs-5.7.19-1.el6.x86_64 mysql-community-client-5.7.19-1.el6.x86_64 mysql57-community-release-el6-11.noarch mysql-community-common-5.7.19-1.el6.x86_64 mysql-community-libs-compat-5.7.19-1.el6.x86_64 mysql-community-server-5.7.19-1.el6.x86_64
whereis mysql 
 
//查看安裝目錄，分別刪除

4、初始化mysql

#查看是否開機啟動
chkconfig --list | grep mysqld
#設為開機啟動
chkconfig mysqld on
#啟動mysql進行初始化
service mysqld start
#查看密碼
grep "password" /var/log/mysqld.log
#進入mysql
mysql -uroot -p密碼
#修改密碼
set password for ‘root‘@‘localhost‘ = password(‘新密碼‘);

5、修改mysql字符集為UTF-8：

vim /etc/my.cnf; 
在[mysqld]部分添加：character
 
-set-server=utf8;
在文件末尾新增[client]段，並在[client]段添加：default-character-set=utf8

6、重啟mysqld服務：

service mysqld restart

centos6.8服務器配置之MYSQL配置