centos7修改yum源本地,如何配置yum源

centos-base.repo备份系统的缺省yum文件mv centos-base.repo.bak创建centos-base.repo文件，并添加以下内容themirrorsystemusestheconnectingipaddressoftheclientandthe # updatestatusofeachmirrortopickmirrorsthatareupdatedtoand # geographicallyclosetotheclient.youshouldusethisforcentosupdates # unlessyouaremanuallypickingothermirrors.# # ifthemirrrrororols asafallbackyoucantrythe # remarkedoutbaseurl=line instead.# # [ base ] name=centos-6.10-base-mirrors.a liyun.comfailovermethod=priority base URL=http://mirrors.a liyun.com/centos -。 centos-vault/rpm-gpg-key-centos-6 #发行更新[ updates ] name=centos-6.10-updates-mirrors.a liyun.comfailovermethod=priority base URL=http://mirrors.a liyun.com/centos centos-vault/rpm-gpg-key-centos-6 # additionalpackagesthatmaybe name=centos-6.10-extras-mirrors.a liyun.comfailovermethod=priority base URL=http://mirrors centos gpg check=1gpg key=http://mirrors.a liyun.com/centos-vault/rpm-gpg-key-centos-6 # additionalpackagesthatextendfunctionalityofexistingpackages [ centos plus ] name=centos-6.10-plus-mirrors.a liyun.comfailovermethod=priority base URL=http://mirrors.a liyun.com/centos-com gpg check=1启用=0gpg key=http://mirrors.a liyun.com/centos-vault/rpm-gpg-key-centos-6 # contrib-packag age name=centos-6.10-contrib-mirrors.a liyun.comfailovermethod=priority base URL=3http://mirrors.a centos gpg check=1enabled=0gpg key=http://mirrors.a liyun.com/centos-vault/rpm-gpg-key-centos-6运行以下命令yum源有效yumcleaar