CentOS 镜像使用帮助

首先备份 CentOS-Base.repo sudo mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

之后启用镜像软件仓库， 将以下内容写入 /etc/yum.repos.d/CentOS-Base.repo

1. CentOS 7:

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

2. CentOS 6:

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

3. CentOS 5:

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

最后运行 sudo yum makecache 更新软件包缓存。