ubuntu18.04 配置國內鏡像源

修改配置文件

1. 手動更改

   • 用你熟悉的編輯器打開/etc/apt/sources.list ，例如 vi /etc/apt/sources.list
   • 以ubuntu 18.04(bionic) 為例把下列內容複製替換sources.list中的全部內容(使用阿裡雲鏡像)：

   deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse
   
   deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse
   
   deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse
   
   deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse
   
   deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
   deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse
   
   

2. 一鍵更改

   通過wget獲取配置文件（前提你的電腦得有wget，沒有的話運行sudo apt-get install wget ），例如獲取ubuntu18.04的配置文件為例(使用騰訊雲鏡像)，阿裡雲鏡像沒有找到現成的配置文件，用騰訊雲代替

   wget -O /etc/apt/sources.list http://mirrors.cloud.tencent.com/repo/ubuntu18_sources.list
   

其他版本可在阿裡雲或者騰訊雲鏡像查看即可。

更新緩存

apt-get clean all
apt-get update

Centos7 配置國內鏡像源

和ubuntu基本類似，只是文件路徑稍有不同

1. 下載新的CentOS-Base.repo文件到 /etc/yum.repos.d/例如：

   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

2. 或者使用 vi /etc/yum.repos.d/CentOS-Base.repo替換成一下內容

   # 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-$releasever - Base - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos/$releasever/os/$basearch/
           http://mirrors.aliyuncs.com/centos/$releasever/os/$basearch/
           http://mirrors.cloud.aliyuncs.com/centos/$releasever/os/$basearch/
   gpgcheck=1
   gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
    
   #released updates 
   [updates]
   name=CentOS-$releasever - Updates - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos/$releasever/updates/$basearch/
           http://mirrors.aliyuncs.com/centos/$releasever/updates/$basearch/
           http://mirrors.cloud.aliyuncs.com/centos/$releasever/updates/$basearch/
   gpgcheck=1
   gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
    
   #additional packages that may be useful
   [extras]
   name=CentOS-$releasever - Extras - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos/$releasever/extras/$basearch/
           http://mirrors.aliyuncs.com/centos/$releasever/extras/$basearch/
           http://mirrors.cloud.aliyuncs.com/centos/$releasever/extras/$basearch/
   gpgcheck=1
   gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
    
   #additional packages that extend functionality of existing packages
   [centosplus]
   name=CentOS-$releasever - Plus - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos/$releasever/centosplus/$basearch/
           http://mirrors.aliyuncs.com/centos/$releasever/centosplus/$basearch/
           http://mirrors.cloud.aliyuncs.com/centos/$releasever/centosplus/$basearch/
   gpgcheck=1
   enabled=0
   gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
    
   #contrib - packages by Centos Users
   [contrib]
   name=CentOS-$releasever - Contrib - mirrors.aliyun.com
   failovermethod=priority
   baseurl=http://mirrors.aliyun.com/centos/$releasever/contrib/$basearch/
           http://mirrors.aliyuncs.com/centos/$releasever/contrib/$basearch/
           http://mirrors.cloud.aliyuncs.com/centos/$releasever/contrib/$basearch/
   gpgcheck=1
   enabled=0
   gpgkey=http://mirrors.aliyun.com/centos/RPM-GPG-KEY-CentOS-7
   
   
   

3. 最後運行更新緩存

   yum clean all
   yum makecache
   

詳細參考阿裡雲鏡像站和騰訊軟體源