我是 Linux 新手，刚刚格式化我的 centos 5.2 vps，并尝试使用命令 yum install links 安装 links。但显示以下错误：
[root@inverses ~]# yum install links
Loading "fastestmirror" plugin
Loading mirror speeds from cached hostfile
* lxlabsupdate: download.lxlabs.com
* lxlabslxupdate: download.lxlabs.com
* base: ftp.nluug.nl
* updates: distrib-coffee.ipsl.jussieu.fr
* addons: mirror.answerstolove.com
* extras: distrib-coffee.ipsl.jussieu.fr
http://ftp.nluug.nl/ftp/pub/os/Linux/distr/CentOS/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://distrib-coffee.ipsl.jussieu.fr/pub/linux/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://mirror.ukhost4u.com/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://centosh2.centos.org/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://mirror.atrpms.net/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://centosf.centos.org/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://centoso3.centos.org/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://centosk.centos.org/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://centosv.centos.org/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
http://centosk3.centos.org/centos/5.2/os/i386/repodata/repomd.xml: [Errno 14] HTTP Error 404: Not Found
Trying other mirror.
Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again
我检查了一些 URL 是否存在，从中得知，它们需要从 .../5.2/.. 重定向到 ../5/。这是需要更改的常见内容吗？我该如何改变呢？
这是我的 CentOS-Base.repohttp://pastebin.com/m67c1a022
答案1
5.3 是当前版本，建议您升级到该版本。
http://centosk3.centos.org/centos/5.2/readme
This directory (and version of CentOS) is depreciated. For normal users,
you should use /5/ and not /5.2/ in your path. Please see this FAQ
concerning the CentOS release scheme:
http://www.centos.org/modules/smartfaq/faq.php?faqid=34
If you know what you are doing, and absolutely want to remain at the 5.2
level, go to http://vault.centos.org/ for packages.
您可以在 /etc/yum.repos.d/ 中修改 repo 位置
据我所知，/5/ 应该是最新 5.x 版本的链接
编辑：刚刚看到您发布的 repo 文件。
[updates]
name=CentOS-$releasever - Updates
mirrorlist=http://mirrorlist.centos.org/?release=5.2&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5
我身边没有 centos 机器可以检查（不再使用它），但我相信那里的镜像列表行已经被修改，它应该包含一个版本变量，而不是一个实际的数字，就像在注释的 baseurl 选项中一样。
将镜像列表中的 5.2 替换为：
mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
完成此操作后，您应该能够yum upgrade升级到下一个版本。这是系统默认应该执行的操作。
答案2
对我来说这是一个缓存问题......
yum clean all
yum update
之后它就可以工作了。
答案3
您可以使用以下链接进行升级，但我觉得您的文件有问题/etc/yum.repos.d/####.repo。您可以替换该文件并再试一次。
http://www.cyberciti.biz/tips/red-hat-enterprise-linux-5-4-released.html这是针对 RHEL 5.4 的，但与 centos 是一样的。
答案4
你能用 wget 吗http://serverfault.com （在我看来，这似乎是 DNS 问题）检查您的 /etc/resolv.conf 文件，确保它指向您的 DNS 服务器、主网关或 OpenDNS IP 之类的东西。如果您可以访问网络外的站点，那么... 尝试以下命令：yum clean all
令人厌烦的问题...