Linux修改資源為阿里雲鏡像

Ubuntu系統

將下列文本添加到/etc/apt/sources.list文件里

deb http://mirrors.aliyun.com/ubuntu/ raring main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ raring-security main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ raring-updates main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ raring-proposed main restricted universe multiverse
deb http://mirrors.aliyun.com/ubuntu/ raring-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ raring main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ raring-security main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ raring-updates main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ raring-proposed main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ raring-backports main restricted universe multiverse
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但是執行sudo apt-get update仍然報錯，問題在於DNS沒有配置好。
解決方法：

sudo vi /etc/resolv.conf
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添加

# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.1.1
#這里用的是阿里雲的DNS服務器
nameserver 223.5.5.5
nameserver 223.6.6.6
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之后執行sudo apt-get update就正常了。

Centos系統

修改步驟：

1、備份

mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.backup

2、下載新的CentOS-Base.repo 到/etc/yum.repos.d/

CentOS 5

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-5.repo

CentOS 6

wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

或者

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-6.repo

CentOS 7

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

或者

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

CentOS 8

 

curl -o /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-8.repo

3、清除緩存

 

yum clean all

4、之后運行yum makecache生成緩存