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CentOS 7 yum无法使用解决方法Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=

在centos7中使用yum命令时候报错：

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Loading mirror speeds from cached hostfile
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
14: curl#6 - "Could not resolve host: mirrorlist.centos.org; 未知的错误"

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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：

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cd /etc/yum.repos.d

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之后依次执行：

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cp  CentOS-Base.repo   CentOS-Base.repo.backup
vi CentOS-Base.repo

 

进入后改为：

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# 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.
#
#
[base]
name=CentOS-$releasever - Base
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
#baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
baseurl=http://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
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
#baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
baseurl=http://vault.centos.org/7.9.2009/updates/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
#additional packages that may be useful
[extras]
name=CentOS-$releasever - Extras
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra
#$baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/
#baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
baseurl=http://vault.centos.org/7.9.2009/extras/$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-$releasever - Plus
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus&infra=$infra
#baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/
#baseurl=http://vault.centos.org/7.9.2009/x86_64/os/
baseurl=http://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wq保存下，依次执行：

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sudo yum clean all
sudo yum makecache

 

之后等待加载：
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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

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curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

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wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo

 

然后执行：

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cat CentOS-Base.repo

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看着镜像是阿里云的即可。 建议在执行下

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sudo yum clean all
sudo yum makecache

 

from:https://www.cnblogs.com/kohler21/p/18331060

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