CentOS7停止维护后，如何还能有效使用yum源更新系统？

背景 CentOS 7 已于2024年6月30日停止维护，在停止维护后我们之前配置的国内镜像源大多都是空目录了，即在线国内镜像源不可用,就像下边这样提示： [root@bogon yum.repos.d]# yum install vim 已加载插件：fastestmirror Loading mirror speeds from cached hostfile One of the configured repositories failed (未知), and yum doesn't have enough cached data to continue. At this point the only safe thing yum can do is fail. There are a few ways to work "fix" this: 1. Contact the upstream for the repository and get them to fix the problem. 2. Reconfigure the baseurl/etc. for the repository, to point to a working upstream. This is most often useful if you are using a newer distribution release than is supported by the repository (and the packages for the previous distribution release still work). 3. Run the command with the repository temporarily disabled yum --disablerepo=<repoid> ... 4. Disable the repository permanently, so yum won't use it by default. Yum will then just ignore the repository until you permanently enable it again or use --enablerepo for temporary usage: yum-config-manager --disable <repoid> or subscription-manager repos --disable=<repoid> 5. Configure the failing repository to be skipped, if it is unavailable. Note that yum will try to contact the repo. when it runs most commands, so will have to try and fail each time (and thus. yum will be be much slower). If it is a very temporary problem though, this is often a nice compromise: yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true Cannot find a valid baseurl for repo: base/7/x86_64 那么有没有办法可以继续使用在线镜像源呢？ 有的，还不只一种，强烈推荐后两种，我们一起看看。 解决方法 方法1、本地搭建镜像源 作为内网环境使用yum源的方法备用。 1、下载centos7 ISO镜像，下载地址 https://mirrors.huaweicloud.com/centos-vault/7.9.2009/isos/x86_64/ ，推荐选择Everything版本。