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”wgethttp://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.rpmrpm-ivhmysql84-community-release-el7-2.noarch.rpm yuminstallmysql-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servicemysqld restart mysql-Vcat/var/log/mysqld.log修改初始密码ALTERUSERrootlocalhostIDENTIFIED BYabcABGD1233;# 设置复杂密码SET GLOBALvalidate_password.policy0;# 放宽密码复杂度限制setglobalvalidate_password.length6;# 密码最小长度限制为6ALTERUSERrootlocalhostIDENTIFIED BY123456;# 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