CentOS 7 安装MySQL 并允许远程连接

CentOS 7的yum源中貌似没有正常安装mysql时的mysql-sever文件，需要去官网上下载

CentOS 7的yum源中貌似没有正常安装mysql时的mysql-sever文件，需要去官网上下载# wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm# rpm -ivh mysql-community-release-el7-5.noarch.rpm# yum install mysql-community-server
成功安装之后重启mysql服务
#systemctl start mysqld.service

初次安装mysql是root账户是没有密码的
设置密码：
# mysql -urootmysql> set password for ‘root’@‘localhost’ = password('mypasswd');mysql> exit

1.用root 进入mysql后mysql如何设置密码
mysql>set password =password('123456');mysql>flush privileges;


2.使用GRANT语句 
mysql>grant all on *.* to 'root'@'localhost' IDENTIFIED BY '123456'with grant option ;mysql>flush privileges;

3.进入mysql库修改user表
mysql>use mysql;mysql>update user set password=password('123456') where user='root'; mysql>flush privileges;


启动和设置开机启动
systemctl start mysqlsystemctl enable mysql


 
 
允许远程用户登录访问mysql的方法
直接授权(推荐)
　　从任何主机上使用root用户，密码：youpassword（你的root密码）连接到mysql服务器：
# mysql -u root -proot mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;操作完后切记执行以下命令刷新权限 FLUSH PRIVILEGES 


 
授权之后重启mysql服务
#systemctl start mysqld.service