CentOS7官方停止支持，yum源变更 由于 CentOS 7 在 2024 年 6 月 30 日停止支持，生命周期已结束（进入EOL）。因此，官方仓库已移至https://vault.centos.org。不再有更新现有CentOS 7.x系统在更新执行yum命令的时候会遇到报错，解决办法为修改 /etc/yum.repos.d/CentOS-Base.repo文件，内容如下，记得修改之前做备份[base] name=CentOS-$releasever - Base baseurl=https://vault.centos.org/7.9.2009/os/$basearch gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #released updates [updates] name=CentOS-$releasever - Updates baseurl=https://vault.centos.org/7.9.2009/updates/$basearch gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras baseurl=https://vault.centos.org/7.9.2009/extras/$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-$releasever - Plus baseurl=https://vault.centos.org/7.9.2009/centosplus/$basearch gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7然后执行yum makecache 即可。