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在centos7中使用yum命令时候报错：

楼主
发表于 2024-11-18 11:38:42 | 查看: 350| 回复: 0
  1. Loading mirror speeds from cached hostfile
  2. Could not retrieve mirrorlist [url]http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock[/url] error was
  3. 14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"
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  1. 已加载插件：fastestmirror
  2. Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
  3. 14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的名称或服务"


  6. One of the configured repositories failed (未知),
  7. and yum doesn't have enough cached data to continue. At this point the only
  8. safe thing yum can do is fail. There are a few ways to work "fix" this:

  10.      1. Contact the upstream for the repository and get them to fix the problem.

  12.      2. Reconfigure the baseurl/etc. for the repository, to point to a working
  13.         upstream. This is most often useful if you are using a newer
  14.         distribution release than is supported by the repository (and the
  15.         packages for the previous distribution release still work).

  17.      3. Run the command with the repository temporarily disabled
  18.             yum --disablerepo=<repoid> ...

  20.      4. Disable the repository permanently, so yum won't use it by default. Yum
  21.         will then just ignore the repository until you permanently enable it
  22.         again or use --enablerepo for temporary usage:

  24.             yum-config-manager --disable <repoid>
  25.         or
  26.             subscription-manager repos --disable=<repoid>

  28.      5. Configure the failing repository to be skipped, if it is unavailable.
  29.         Note that yum will try to contact the repo. when it runs most commands,
  30.         so will have to try and fail each time (and thus. yum will be be much
  31.         slower). If it is a very temporary problem though, this is often a nice
  32.         compromise:

  34.             yum-config-manager --save --setopt=<repoid>.skip_if_unavailable=true
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问题原因
出现这个错误是因为使用的 CentOS 7 仓库已经被归档，当前的镜像地址无法找到所需的文件。CentOS 7 的官方支持已经结束，部分仓库已被移至归档库。这导致了你的 yum 命令无法找到所需的元数据文件。CentOS 7 的官方仓库在 2024 年 6 月 30 日之后已经停止维护。因此，使用最新的 CentOS 7 官方仓库可能会遇到问题。
解决方法
进入/etc/yum.repos.d目录下找到 CentOS-Base.repo
进入目录，将CentOS-Base.repo文件内容修改为：
  1. # CentOS-Base.repo
  2. #
  3. # The mirror system uses the connecting IP address of the client and the
  4. # update status of each mirror to pick mirrors that are updated to and
  5. # geographically close to the client.  You should use this for CentOS updates
  6. # unless you are manually picking other mirrors.
  7. #
  8. # If the mirrorlist= does not work for you, as a fall back you can try the
  9. # remarked out baseurl= line instead.
  10. #
  11. #

  13. [base]
  14. name=CentOS-$releasever - Base
  15. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
  16. #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
  17. #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
  18. baseurl=http://vault.centos.org/7.9.2009/os/$basearch/
  19. gpgcheck=1
  20. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

  22. #released updates
  23. [updates]
  24. name=CentOS-$releasever - Updates
  25. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
  26. #baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
  27. #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
  28. baseurl=http://vault.centos.org/7.9.2009/updates/$basearch/
  29. gpgcheck=1
  30. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

  32. #additional packages that may be useful
  33. [extras]
  34. name=CentOS-$releasever - Extras
  35. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
  36. #$baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
  37. #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
  38. baseurl=http://vault.centos.org/7.9.2009/extras/$basearch/
  39. gpgcheck=1
  40. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7

  42. #additional packages that extend functionality of existing packages
  43. [centosplus]
  44. name=CentOS-$releasever - Plus
  45. #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
  46. #baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
  47. #baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
  48. baseurl=http://vault.centos.org/7.9.2009/centosplus/$basearch/
  49. gpgcheck=1
  50. enabled=0
  51. gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
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然后执行：
  1. sudo yum clean all
  2. sudo yum makecache
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阿里云镜像源
以下两个命令都可以，执行完成后进入/etc/yum.repos.d
  1. curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
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  1. wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
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然后查看 ：
  1. cat CentOS-Base.repo
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看看baseURL是否有阿里云镜像。
然后可以执行：
  1. sudo yum clean all
  2. sudo yum makecache
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