解决方法：修改/etc/yum.repos.d下的“CentOS-AppStream.repo”“CentOS-Base.repo”“CentOS-Extras.repo”“CentOS-PowerTools.repo”。
# CentOS-AppStream.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. # # [AppStream] name=CentOS-$releasever - AppStream baseurl=https://mirrors.aliyun.com/centos/8-stream/AppStream/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
# 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. # # [BaseOS] name=CentOS-$releasever - Base baseurl=https://mirrors.aliyun.com/centos/8-stream/BaseOS/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
# CentOS-Extras.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. # # #additional packages that may be useful [extras] name=CentOS-$releasever - Extras baseurl=https://mirrors.aliyun.com/centos/8-stream/extras/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
# CentOS-PowerTools.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. # # [PowerTools] name=CentOS-$releasever - PowerTools baseurl=https://mirrors.aliyun.com/centos/8-stream/PowerTools/$basearch/os/ gpgcheck=1 enabled=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-centosofficial
重新执行：yum install -y tar
