CentOS 7 yum无法使用解决方法Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=
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<p>在centos7中使用yum命令时候报错：</p>
<pre><code>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"
</code></pre>
<p><img src="https://img2024.cnblogs.com/blog/1894089/202407/1894089-20240729204902708-1542959166.png" alt="image" loading="lazy"></p>
<h2 id="问题原因">问题原因</h2>
<p>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。</p>
<h2 id="解决方法">解决方法</h2>
<p>进入/etc/yum.repos.d目录下找到CentOS-Base.repo<br>
进入目录：</p>
<pre><code>cd /etc/yum.repos.d
</code></pre>
<p><img src="https://img2024.cnblogs.com/blog/1894089/202407/1894089-20240729205041295-1863102227.png" alt="image" loading="lazy"><br>
之后依次执行：</p>
<pre><code>cpCentOS-Base.repo CentOS-Base.repo.backup
vi CentOS-Base.repo
</code></pre>
<p>进入后改为：</p>
<pre><code># 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.
#
#
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/$basearch/
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
#released updates
name=CentOS-$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
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
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
</code></pre>
<p>然后wq保存下，依次执行：</p>
<pre><code>sudo yum clean all
sudo yum makecache
</code></pre>
<p>之后等待加载：<br>
<img src="https://img2024.cnblogs.com/blog/1894089/202407/1894089-20240729205251208-2004813486.png" alt="image" loading="lazy"></p>
<h2 id="阿里云镜像源">阿里云镜像源</h2>
<p>以下两个命令都可以，执行完成后进入/etc/yum.repos.d</p>
<pre><code>curl -o /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
</code></pre>
<pre><code>wget -O /etc/yum.repos.d/CentOS-Base.repo https://mirrors.aliyun.com/repo/Centos-7.repo
</code></pre>
<p>然后执行：</p>
<pre><code> cat CentOS-Base.repo
</code></pre>
<p><img src="https://img2024.cnblogs.com/blog/1894089/202407/1894089-20240729205605247-903700683.png" alt="image" loading="lazy"><br>
看着镜像是阿里云的即可。 建议在执行下</p>
<pre><code>sudo yum clean all
sudo yum makecache
</code></pre>
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