mysql安裝與配置（無默認密碼）

1.安裝

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

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

3.yum install mysql-community-server

2.安裝成功后啟動mysql

systemctl start mysqld

3.mysql的初始化配置

// 進入mysql，設置密碼，一開始數據庫默認沒有密碼
mysql -u root

4.在mysql中設置密碼

set password for 'root'@'localhost' =password('新密碼');

5.開啟mysql的遠程連接，讓你可以使用本地的電腦連接雲上的mysql

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

6.退出mysql

exit