ContOS7 업데이트 실패시 복구 시나리오

• /etc/yum.repos.d/ 내의 모든 파일을 백업하거나 삭제
• /etc/yum.repos.d/CentOS-Daum.repo 생성(아래 내용)
• yum 실행

$> yum clean all
$> yum -y install telnet

CentOS-Daum.repo 내용

[base]
name=CentOS-$releasever - Base
baseurl=http://ftp.daum.net/centos/7/os/$basearch/
gpgcheck=1
gpgkey=http://ftp.daum.net/centos/RPM-GPG-KEY-CentOS-7
 
[updates]
name=CentOS-$releasever - Updates
baseurl=http://ftp.daum.net/centos/7/updates/$basearch/
gpgcheck=1
gpgkey=http://ftp.daum.net/centos/RPM-GPG-KEY-CentOS-7
 
[extras]
name=CentOS-$releasever - Extras
baseurl=http://ftp.daum.net/centos/7/extras/$basearch/
gpgcheck=1
gpgkey=http://ftp.daum.net/centos/RPM-GPG-KEY-CentOS-7
 
[centosplus]
name=CentOS-$releasever - Plus
baseurl=http://ftp.daum.net/centos/7/centosplus/$basearch/
gpgcheck=1
gpgkey=http://ftp.daum.net/centos/RPM-GPG-KEY-CentOS-7

• Centos7 yum 실행안될때/Daum repo로 변경