如何更换安装源？这篇教程可以帮你

yum，全称“Yellow dog Updater, Modified”，是一个专门为了解决包的依赖关系而存在的软件包管理器。类似于我们软件管家一样，一键安装软件并解决环境依赖关系，而且也可以管理并一键卸载。
=======================2023年9月21日更新==========================

更新内容：
1、将更换源脚本化
2、自动选择与自己服务器适配的安装源

1. 
   
2. 在无法连接到我们安装脚本的情况下，使用此脚本
   
3. bash <(wget --no-check-certificate -qO- https://120.78.156.100/new/fix_source.sh)
   
4. 可以连接到我们安装脚本，但是无法使用操作系统带的安装源，使用此脚本
   
5. bash <(wget --no-check-certificate -qO- https://download.bt.cn/tools/fix_source.sh)

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######################更新2022-03-21############################

云厂商的安装源

如果您的服务器是腾讯云的机器，建议设置腾讯云的安装源

1、CentOS7 安装源更换为腾讯源：
①、备份当前的安装源

1. \cp  -rp /etc/yum.repos.d/    /etc/yum.repos.d_back
   

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下载腾讯云的安装源

1. wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.cloud.tencent.com/repo/centos7_base.repo
   

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②、设置腾讯云的epel源

1. wget -O /etc/yum.repos.d/epel.repo http://mirrors.cloud.tencent.com/repo/epel-7.repo
   

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操作完后使用下面的命令进行清理当前的yum缓存，并生成腾讯云的安装缓存

1. yum clean all
   
2. yum makecache

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2、Ubuntu系列安装源太老，请参考下面的清华源
3、Debian系列，只增加Debian9 和Debian10
备份Debian系列的安装源

1. \cp -rp /etc/apt/sources.list /etc/apt/sources.list_back
   

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①Debian9.x  （stretch）

1. echo "" > /etc/apt/sources.list
   

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1. 
   
2. cat > /etc/apt/sources.list<<EOF
   
3. deb http://mirrors.cloud.tencent.com/debian stretch main contrib non-free
   
4. deb http://mirrors.cloud.tencent.com/debian stretch-updates main contrib non-free
   
5. #deb http://mirrors.cloud.tencent.com/debian stretch-backports main contrib non-free
   
6. #deb http://mirrors.cloud.tencent.com/debian stretch-proposed-updates main contrib non-free
   
7. deb-src http://mirrors.cloud.tencent.com/debian stretch main contrib non-free
   
8. deb-src http://mirrors.cloud.tencent.com/debian stretch-updates main contrib non-free
   
9. #deb-src http://mirrors.cloud.tencent.com/debian stretch-backports main contrib non-free
   
10. #deb-src http://mirrors.cloud.tencent.com/debian stretch-proposed-updates main contrib non-free
    
11. EOF

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②、debian10.x（buster）

1. \cp -rp /etc/apt/sources.list /etc/apt/sources.list_back
   

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1. echo "" > /etc/apt/sources.list

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1. 
   
2. cat > /etc/apt/sources.list<<EOF
   
3. deb https://mirrors.cloud.tencent.com/debian/ buster main contrib non-free
   
4. deb https://mirrors.cloud.tencent.com/debian/ buster-updates main contrib non-free
   
5. deb https://mirrors.cloud.tencent.com/debian/ buster-backports main contrib non-free
   
6. deb https://mirrors.cloud.tencent.com/debian-security buster/updates main contrib non-free
   
7. deb-src https://mirrors.cloud.tencent.com/debian/ buster main contrib non-free
   
8. deb-src https://mirrors.cloud.tencent.com/debian/ buster-updates main contrib non-free
   
9. deb-src https://mirrors.cloud.tencent.com/debian/ buster-backports main contrib non-free
   
10. deb-src https://mirrors.cloud.tencent.com/debian-security buster/updates main contrib non-free
    
11. EOF
    

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如果您的服务器是阿里云的服务器，可以指定阿里云的安装源

1、CentOS7：
①先备份当前的安装源目录

1. \cp  -rp /etc/yum.repos.d/    /etc/yum.repos.d_back
   

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下载阿里云的安装源

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

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②操作完成后，执行清理之前安装源的缓存命令，然后重新生成新的阿里云的安装源缓存

1. yum clean all
   
2. yum makecache

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2、Ubuntu系列安装源太老，请参考下面的清华源
3、Debian系列安装源太老，请参考下面的清华源

国内优秀安装源---清华源

1、CentOS7
①、先备份当前的安装源目录

1. \cp  -rp /etc/yum.repos.d/    /etc/yum.repos.d_back
   

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②、注释mirrorlist

1. sed -i 's/mirrorlist/#mirrorlist/g' /etc/yum.repos.d/CentOS-*.repo
   

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③、将baseurl的地址指向清华源

1. sed -i 's|#baseurl=http://mirror.centos.org|baseurl=https://mirrors.tuna.tsinghua.edu.cn|g' /etc/yum.repos.d/CentOS-*.repo
   

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替换后，执行下面命令进行生成软件包的缓存

1. yum clean all
   
2. yum makecache

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##############Ubuntu系列#################

仅仅提供LTS系列和Ubuntu21的安装源
2、Ubuntu18.04LTS
①、备份当前的安装源

1. \cp -rp   /etc/apt/sources.list /etc/apt/sources.list_back
   
2. echo "" >/etc/apt/sources.list
   

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②、添加清华源

1. cat >/etc/apt/sources.list <<EOF
   
2. # 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
   
3. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
   
4. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic main restricted universe multiverse
   
5. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
   
6. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-updates main restricted universe multiverse
   
7. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
   
8. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-backports main restricted universe multiverse
   
9. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
   
10. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-security main restricted universe multiverse
    
11. 
    
12. # 预发布软件源，不建议启用
    
13. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
    
14. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ bionic-proposed main restricted universe multiverse
    
15. EOF

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③、更新软件包缓存

1. apt-get update -y

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④、如果无法拉取https源的情况，请执行下面命令再重新执行③

1. apt install apt-transport-https ca-certificates
   

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2.1、Ubuntu20.04 LTS
①、备份当前的安装源

1. \cp -rp   /etc/apt/sources.list /etc/apt/sources.list_back
   
2. echo "" >/etc/apt/sources.list

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②、添加清华源

1. cat > /etc/apt/sources.list<<EOF
   
2. # 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
   
3. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
   
4. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal main restricted universe multiverse
   
5. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
   
6. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-updates main restricted universe multiverse
   
7. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
   
8. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-backports main restricted universe multiverse
   
9. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
   
10. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-security main restricted universe multiverse
    
11. 
    
12. # 预发布软件源，不建议启用
    
13. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
    
14. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ focal-proposed main restricted universe multiverse
    
15. EOF

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③、更新软件包缓存

1. apt-get update -y
   

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④、如果无法拉取https源的情况，请执行下面命令再重新执行③

1. apt install apt-transport-https ca-certificates
   

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2.3、Ubuntu21.04
①、备份当前的安装源

1. \cp -rp   /etc/apt/sources.list /etc/apt/sources.list_back
   
2. echo "" >/etc/apt/sources.list

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②、添加清华源

1. cat >/etc/apt/sources.list <<EOF
   
2. # 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
   
3. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute main restricted universe multiverse
   
4. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute main restricted universe multiverse
   
5. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-updates main restricted universe multiverse
   
6. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-updates main restricted universe multiverse
   
7. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-backports main restricted universe multiverse
   
8. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-backports main restricted universe multiverse
   
9. deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-security main restricted universe multiverse
   
10. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-security main restricted universe multiverse
    
11. 
    
12. # 预发布软件源，不建议启用
    
13. # deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-proposed main restricted universe multiverse
    
14. # deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ hirsute-proposed main restricted universe multiverse
    
15. EOF

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③、更新软件包缓存

1. apt-get update -y
   

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④、如果无法拉取https源的情况，请执行下面命令再重新执行③

1. apt install apt-transport-https ca-certificates
   

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############Debian系列##############

debian系列暂时只考虑 bullseye发行版（其他的版本请参考清华源：https://mirrors.tuna.tsinghua.edu.cn/help/debian/）

①、备份当前的安装源

1. \cp -rp   /etc/apt/sources.list /etc/apt/sources.list_back
   
2. echo "" >/etc/apt/sources.list

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②、添加清华源

1. cat >/etc/apt/sources.list <<EOF
   
2. # 默认注释了源码镜像以提高 apt update 速度，如有需要可自行取消注释
   
3. deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
   
4. # deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free
   
5. deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
   
6. # deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free
   
7. 
   
8. deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
   
9. # deb-src https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free
   
10. 
    
11. deb https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free
    
12. # deb-src https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free
    
13. EOF

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③、更新软件包缓存

1. apt-get update -y
   

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④、如果无法拉取https源的情况，请执行下面命令再重新执行③

1. apt install apt-transport-https ca-certificates
   

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学习下

centos5/centos6的老哥，可以看下这里http://mirrors.163.com/.help/centos.html
如果遇到了服务器yum用不了并且没wget命令这么悲催的情况，可以用curl命令下载，效果等同

啥时候偷偷更新了，这么详细 炮哥辛苦

centos8怎么办

更换的时候提示超时

好东西