linux在线安装mysql

 1）下载rpm安装包

wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm;
2） 安装mysql源

yum localinstall mysql57-community-release-el7-8.noarch.rpm

3）检查mysql源是否安装成功

yum repolist enabled | grep "mysql.*-community.*"
4)开始安装mysql

yum install mysql-community-server

yum install mysql-community-devel
5）启动mysql

service mysqld start
6）查看mysql启动状态

service mysqld status
7）设置开机启动

systemctl enable mysqld

systemctl daemon-reload
8）获取mysql默认生成的密码

grep 'temporary password' /var/log/mysqld.log

9）更换密码
set global validate_password_policy=0;
set global validate_password_length=1;
 mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';