centos7 rpm安装或者升级mysql5.7

- --To list Old MySql
yum list installed | grep -i mysql
--卸载旧版本的mysql(To remove Old MySql)
yum remove mysql mysql-*
--移除命令执行后，可再看看是否有残余的mysql，输入命令：
yum list installed | grep mysql
--如果有，可输入命令删除：
yum remove mysql－libs

https://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm

[sunwei@localhost mysqlDownload]$ wget https://repo.mysql.com//mysql57-community-release-el7-11.noarch.rpm[/code] 
3.

[sunwei@localhost mysqlDownload]$ sudo rpm -ivh mysql57-community-release-el7-11.noarch.rpm


4.

[sunwei@localhost mysqlDownload]$ sudo yum install mysql-community-server


到此步安装完成

mysql –version  #查看mysql版本信息

查看临时密码：vi /var/log/mysqld.log



登录mysql之后修改临时密码：

修改之前先：

mysql> set global validate_password_policy=0;
Query OK, 0 rows affected (0.00 sec)
mysql> set global validate_password_length=1;
Query OK, 0 rows affected (0.00 sec)


接触mysql5.7 对密码的限制

修改密码：

mysql> alter user 'root'@'localhost' identified by 'pass';
Query OK, 0 rows affected (0.00 sec)


添加远程登录用户：

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'pass' WITH GRANT OPTION;
Query OK, 0 rows affected, 1 warning (0.00 sec)


如果是升级mysql版本：

出现报错：

ERROR 1682 (HY000): Native table ‘performance_schema’.’session_variables’ has the wrong structure

则需要执行以下：

mysql_upgrade -u root -p –force

然后需要重启mysql