root @ zhaosai sudoyuminstalltoolsLoadedplugins: fastestmirrorDeterminingfastestmirrorsOneoftheconfiguredrepositoriesfailed ( Unknown ), andyumdoesn ' thaveenoughcacheddatatocontinue . Atthispointtheonlysafethingyumcandoisfail . Thereareafewwaystowork " fix " this :1.Contacttheupstreamfortherepositoryandgetthemtofixtheproblem.2.Reconfigurethebaseurl/ ete . fortherepository , topointtoaworkingupstream . ThisismostoftenusefulifyouareusinganewerdistributionreleasethanissupportedbytherepositoryCandthepackagesforthepreviousdistributionreleasestillwork ),3.Runthecommandwiththerepositorytemporarilydisabledgum-- disablerepo = crepoid >...4.Disabletherepositorypermanently, soyumwon ' tuseitbydefault . YumwillthenJustignoretherepositoryuntilyoupermanentlyenableitagainoruse -- enablerepofortemporaryusage : yum - config - manager -- disable < repoid > Orsubscription - managerrepos -- disable =< repoid >5.Configurethefailingrepositorytobeskipped, ifitisunavailabie . Notethatyumwilltrytocontacttherepo , whenitrunsmostcommands . sowillhavetotryandfaileachtimeCandthus . yumwillbebemuchslower ), Ifitisaverytemporaryproblemthough , thisisoften & nicecompromise : yum - config - manager -- save -- setopt - crepoid >. skip _ if _ unavailable = trueCannotfindavalidbaseurlforrepo : base /?/x86_64Croot@ zhaosai "#

这似乎是一个关于使用yum安装工具时出现的错误消息。可能是由于配置的存储库不可用，导致yum无法继续操作。建议您联系存储库的提供者，或者通过禁用存储库或跳过不可用存储库来解决问题。您可以尝试运行以下命令来禁用存储库：yum-config-manager --disable <repoid>。如果您需要更多帮助，请提供更多上下文和详细信息。