Centos7在线安装mysql5.7

一、下载rpm包

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

二、安装rpm包

rpm -ivh mysql57-community-release-el7-11.noarch.rpm

三、安装之后更新yum源

yum clean all;
yum repolist;
yum makecache;

四、安装mysql

yum -y install mysql mysql-server mysql-devel

最终提示complete，则安装完成。

五、安装完成后需要对mysql初始化

启动mysql
service mysqld start  或者
systemctl start msyqld.service
重启mysql
service mysqld restart;

1）查询mysql初始密码

grep -e 'temporary' /var/log/mysqld.log

2）用初始密码登陆mysql

mysql -uroot -p  # 之后输入初始密码 回车

3）重新设置密码

set password=password('My-345678');

若修改密码提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements，先执行如下命令再修改

set global validate_password_policy=0;

修改密码之后重启mysql，再用新密码登陆mysql

4）给root用户赋权限,配置远程登陆

use mysql;
select Host,user,authentication_string from user;
grant all on *.* to 'root'@'%' identified by 'My-345678' with grant option;