1、linux系统(1)先结束mysql进程#killallmysqld用mysql安全模式运行并跳过权限，用root登录，此时不需要密码#mysqld_safe–skip-grant-tables#mysql–uroot
2、(2)现在开始重设密码#mysql>usemysql;ReadingtableinformationforcompletionoftableandcolumnnamesYoucanturnoffthisfeaturetogetaquickerstartupwith–ADatabasechangedMysql>upsateusersetPassword=newpasswordwhereuser=‘root’;QueryOK,2rowsaffected(0.02sec)Rowsmatched:2Changed:2Warnings:0Mysql>quit
3、(3)重新启动mysql服务#servicemysqldrestart
