centos 使用yum安装python3报错+更换yum国内源解决

谁践踏了优雅 2022-12-17 14:59 455阅读 0赞

### 文章目录 ###

*   *  一、问题由来：
     *  二、步骤：
     *   *  1、访问清华镜像源：
         *  2、点击问号帮助：
         *  3、建议先备份 CentOS-Base.repo
         *  4、更改：/etc/yum.repos.d/CentOS-Base.repo
         *  5、最后，更新软件包缓存
         *  6、安装python3

## 一、问题由来： ##

今天购买了一台vps测试学习下，结果使用yum命令安装python3，给我一堆错误，然后刚开始以为没有网络，使用curl访问百度什么都没有问题。然后觉得是yum源 的问题。所以百度搜索了下配置yum源。

最后问题解决，整理下这个文章，方便下次再遇到可以快速解决。

## 二、步骤： ##

### 1、访问清华镜像源： ###

[清华镜像源][Link 1]

### 2、点击问号帮助： ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA4MTM4OQ_size_16_color_FFFFFF_t_70_pic_center]

[进入官方帮助页面：][Link 2]

### 3、建议先备份 CentOS-Base.repo ###

sudo cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

### 4、更改：/etc/yum.repos.d/CentOS-Base.repo ###

编辑`/etc/yum.repos.d/CentOS-Base.repo`

vi /etc/yum.repos.d/CentOS-Base.repo

将所有的mirrorlist这一行注销，将所有的baseurl改为清华镜像地址，保存即可

#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os&infra=$infra
    baseurl=http://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/

将里面的两行改为我的这种：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA4MTM4OQ_size_16_color_FFFFFF_t_70_pic_center 1]

或者直接复制官方的（全文替换，我的正好是centos7，可以全文替换，不是7版本的系统，还是，一个一个替换吧）：

# 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-$releasever - Base
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
    enabled=1
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7
    
    #released updates
    [updates]
    name=CentOS-$releasever - Updates
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/updates/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
    enabled=1
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7
    
    
    
    #additional packages that may be useful
    [extras]
    name=CentOS-$releasever - Extras
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras
    enabled=1
    gpgcheck=1
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7
    
    
    
    #additional packages that extend functionality of existing packages
    [centosplus]
    name=CentOS-$releasever - Plus
    baseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/centosplus/$basearch/
    #mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus
    gpgcheck=1
    enabled=0
    gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7

### 5、最后，更新软件包缓存 ###

sudo yum makecache

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA4MTM4OQ_size_16_color_FFFFFF_t_70_pic_center 2]

### 6、安装python3 ###

yum install python3

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MjA4MTM4OQ_size_16_color_FFFFFF_t_70_pic_center 3]

参考文章：  
https://mirrors.cnnic.cn/help/centos/  
https://blog.csdn.net/xiaojin21cen/article/details/84726193

[Link 1]: https://mirrors.cnnic.cn/
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[Link 2]: https://mirrors.cnnic.cn/help/centos/
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