centos7(redhat7)如何卸载自带yum并且安装国内yum源的方法
<p>redhat 的更新包只对注册的用户生效，所以我们自己手动更改成CentOS 的更新包，CentOS几乎和redhat是一样的，所以无需担心软件包是否可安装，安装之后是否有问题。</p>
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<strong>1.检查是否安装yum包</strong></p>
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<code class="bash plain">rpm -qa |</code><code class="bash functions">grep</code> <code class="bash plain">yum</code>
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<strong>2.删除redhat自带的yum包</strong></p>
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<code class="bash plain">rpm -qa|</code><code class="bash functions">grep</code> <code class="bash plain">yum|</code><code class="bash functions">xargs</code> <code class="bash plain">rpm -e --nodeps（不检查依赖，直接删除rpm包）</code>
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<strong>3.下载163的yum 安装包</strong></p>
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<code class="bash plain">wget http:</code><code class="bash plain">//mirrors</code><code class="bash plain">.163.com</code><code class="bash plain">/centos/7/os/x86_64/Packages/python-iniparse-0</code><code class="bash plain">.4-9.el7.noarch.rpm</code>
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<code class="bash plain">wget http:</code><code class="bash plain">//mirrors</code><code class="bash plain">.163.com</code><code class="bash plain">/centos/7/os/x86_64/Packages/python-urlgrabber-3</code><code class="bash plain">.10-8.el7.noarch.rpm</code>
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<code class="bash plain">wget http:</code><code class="bash plain">//mirrors</code><code class="bash plain">.163.com</code><code class="bash plain">/centos/7/os/x86_64/Packages/yum-3</code><code class="bash plain">.4.3-150.el7.centos.noarch.rpm</code>
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<code class="bash plain">wget http:</code><code class="bash plain">//mirrors</code><code class="bash plain">.163.com</code><code class="bash plain">/centos/7/os/x86_64/Packages/yum-metadata-parser-1</code><code class="bash plain">.1.4-10.el7.x86_64.rpm</code>
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<code class="bash plain">wget http:</code><code class="bash plain">//mirrors</code><code class="bash plain">.163.com</code><code class="bash plain">/centos/7/os/x86_64/Packages/yum-plugin-fastestmirror-1</code><code class="bash plain">.1.31-40.el7.noarch.rpm</code>
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<strong>4.安装yum</strong></p>
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<code class="bash plain">rpm -ivh *.rpm</code>
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此时会有依赖包的问题，而且有可能会出现python包安装冲突的问题。故此处可以加上下面两个参数强制安装：</p>
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--force 即使覆盖属于其它包的文件也强迫安装</li>
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--nodeps 如果该RPM包的安装依赖其它包，即使其它包没装，也强迫安装。</li>
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<strong>5.更改yum库的地址,这里使用我们国内自己的yum库，例如网易的CentOS镜像源</strong></p>
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<code class="bash functions">cd</code> <code class="bash plain">/etc/yum</code><code class="bash plain">.repos.d/</code>
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<code class="bash plain">wget http:</code><code class="bash plain">//mirrors</code><code class="bash plain">.163.com/.help</code><code class="bash plain">/CentOS6-Base-163</code><code class="bash plain">.repo</code>
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<strong>6.将CentOS6-Base-163.repo中的$releasever换成 7，将6的关键字也换成7</strong></p>
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<strong>7.设置生效</strong></p>
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<code class="bash plain">yum clean all </code><code class="bash comments">#清理yum缓存，使设置生效</code>
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<code class="bash plain">yum makecache </code><code class="bash comments">#将服务器上的软件包信息缓存到本地,以提高搜索安装软件的速度</code>
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以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持服务器之家。</p>
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原文链接：http://www.jianshu.com/p/15001d19a9f3?utm_source=tuicool&utm_medium=referral</p>
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