CentOS 使用yum安装MYSQL

wget -i http://dev.MysqL.com/get/MysqL57-community-release-el7-7.noarch.rpm
yum -y install MysqL57-community-release-el7-7.noarch.rpm
yum -y install MysqL-community-server
systemctl start  MysqLd.service

使用YUM安装并启动MysqL服务后，MysqL进程会自动在进程日志中打印root用户的初始密码：

[[email protected] ~]# MysqL -uroot -p
Enter password:             #######输入默认的root密码后回车
Welcome to the MysqL monitor.  Commands end with ; or \g.
Your MysqL connection id is 2
Server version: 5.7.10

Copyright (C) 2000,2015,Oracle and/or its affiliates. All rights reserved.

Oracle is a registered Trademark of Oracle Corporation and/or its
affiliates. Other names may be Trademarks of their respective
owners.

Type ‘Help;‘ or ‘\h‘ for Help. Type ‘\c‘ to clear the current input statement.

MysqL> ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘new password‘;
Query OK,0 rows affected (0.00 seC)

MysqL> exit
Bye