Centos7使用yum报错Couldnotretrievemirrorlist

使用yum的时候报这个错误

解决方法 进文件夹 备份文件 改文件 cd /etc/yum.repos.d cp CentOS-Base.repo CentOS-Base.repo.backup vi CentOS-Base.repo 把文件内容删空替换成这个 # CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$releasever - Base #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/ baseurl=http://vault.centos.org/7.9.2009/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$releasever - Updates #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra #baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/ #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/ baseurl=http://vault.centos.org/7.9.2009/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra #$baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/ #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/ baseurl=http://vault.centos.org/7.9.2009/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra #baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/ #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/ baseurl=http://vault.centos.org/7.9.2009/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 彻底清理系统中的缓存和临时文件 sudo yum clean all 命令用于创建 yum 缓存，之后等待加载： sudo yum makecache

更改为阿里云镜像源执行如下命令 curl -o /etc/yum.repos.d/CentOS-Base.repo mirrors.aliyun /repo/Centos-7.repo 彻底清理系统中的缓存和临时文件 sudo yum clean all 命令用于创建 yum 缓存 sudo yum makecache