安装Centos 7基本存储库的新鲜副本

Question

我正在使用CentOS7。在某些测试中，我不小心删除了yum.repo.d中的所有文件。有办法下载和配置CentOS 7

Answer 1

假设您正在运行Centos-7.3，则可以以以下方式返回回购文件，

# ReInstall the centos-release rpm
~]#  rpm -Uvh --force 
     http://mirror.centos.org/centos-7/7/os/x86_64/Packages/centos-release-7-3.1611.el7.centos.x86_64.rpm
# Clean YUM cache
~]# yum clean all
# Try an update
~]# yum update

centos-release rpm包含所有回购文件，

~]#  rpm -qlp 
     http://mirror.centos.org/centos-7/7/os/x86_64/Packages/centos-release-7-3.1611.el7.centos.x86_64.rpm 2>/dev/null | grep repo
/etc/yum.repos.d/CentOS-Base.repo
/etc/yum.repos.d/CentOS-CR.repo
/etc/yum.repos.d/CentOS-Debuginfo.repo
/etc/yum.repos.d/CentOS-Media.repo
/etc/yum.repos.d/CentOS-Sources.repo
/etc/yum.repos.d/CentOS-Vault.repo
/etc/yum.repos.d/CentOS-fasttrack.repo

Answer 2

#!/bin/bash
install-centos-release() {
 releasever="$(rpm -q --qf '%{VERSION}' "$(rpm -q --whatprovides centos-release)")" 
 && releasever="$(printf "%s" "$releasever" | sed -e 's/..*$//g')" 
 && basearch="$(uname -m)" 
 && reposurl=$(printf "%s" "http://mirror.centos.org/centos/$releasever/os/$basearch/Packages/") 
 && releaserpm=$(curl --silent "$reposurl" | grep -oP '(?<=")centos-release.*.rpm(?=")') 
 && releaseuri=$(printf "%s%s" "$reposurl" "$releaserpm") 
 && rpm -Uvh --force "$releaseuri"
}

用法：

# Either launch a new terminal and copy `install-centos-release` into the current shell process, 
# or create a shell script and add it to the PATH to enable command invocation with bash.
install-centos-release
# Refresh YUM repository(ies)
yum clean all
yum -y update

Answer 3

旧的好复制/糊状方法有现场直播的权利

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