CentOS7安装mysql最简单教程

一、使用yum源安装

yum源地址：https://dev.mysql.com/downloads/repo/yum/

选择合适的地址：http://repo.mysql.com/mysql84-community-release-el7-2.noarch.rpm

执行安装命令，一路 “y”

wget http://repo.mysql.com/mysql84-community-release-el7-2.noarch.rpm
# curl http://repo.mysql.com/mysql84-community-release-el7-2.noarch.rpm -o  mysql84-community-release-el7-2.noarch.rpm
rpm -ivh mysql84-community-release-el7-2.noarch.rpm
yum install mysql-community-server

二、开启mysql服务查看初始密码

初次安装mysql，进入root账户没有密码的

service mysqld restart
mysql -V
cat /var/log/mysqld.log

修改初始密码

ALTER USER 'root'@'localhost' IDENTIFIED BY 'abcABGD@@1233++'; # 设置复杂密码
SET GLOBAL validate_password.policy=0;   # 放宽密码复杂度限制
set global validate_password.length=6;	 # 密码最小长度限制为6
ALTER USER 'root'@'localhost' IDENTIFIED BY '123456';   # 设置简单密码
FLUSH PRIVILEGES;    # 刷新权限

到此，MySQL的安装就完成了！别忘了打赏个十万八万！