얼마전 부터 Centos 7 에서 yum 이 안되네요.
원래 되던 거 여서 방화벽, DNS 등은 문제 없습니다.
아래는 오류 메세지 입니다.
[root@dtest ~]# yum -y install net-tools
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
12: Timeout on http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
http://ftp.daumkakao.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://ftp.daumkakao.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
http://centos.mirror.cdnetworks.com/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] curl#52 - "Empty reply from server"
Trying other mirror.
http://ftp.kaist.ac.kr/CentOS/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] curl#52 - "Empty reply from server"
Trying other mirror.
^Chttp://mirror.oasis.onnetcorp.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] curl#56 - "Callback aborted"
Trying other mirror.
원래 되던 거 여서 방화벽, DNS 등은 문제 없습니다.
아래는 오류 메세지 입니다.
[root@dtest ~]# yum -y install net-tools
Loaded plugins: fastestmirror
Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast
Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock error was
12: Timeout on http://mirrorlist.centos.org/?release=7&arch=x86_64&repo=os&infra=stock: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
http://ftp.daumkakao.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 12] Timeout on http://ftp.daumkakao.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml: (28, 'Operation too slow. Less than 1000 bytes/sec transferred the last 30 seconds')
Trying other mirror.
http://centos.mirror.cdnetworks.com/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] curl#52 - "Empty reply from server"
Trying other mirror.
http://ftp.kaist.ac.kr/CentOS/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] curl#52 - "Empty reply from server"
Trying other mirror.
^Chttp://mirror.oasis.onnetcorp.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml: [Errno 14] curl#56 - "Callback aborted"
Trying other mirror.
--2017-04-19 09:41:27-- http://ftp.daumkakao.com/centos/7.3.1611/os/x86_64/repodata/repomd.xml
Resolving ftp.daumkakao.com (ftp.daumkakao.com)... 113.29.189.165
Connecting to ftp.daumkakao.com (ftp.daumkakao.com)|113.29.189.165|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 3735 (3.6K) [application/xml]
Saving to: ‘repomd.xml’
100%[============================================================================================================================================>] 3,735 --.-K/s in 0s
2017-04-19 09:41:27 (234 MB/s) - ‘repomd.xml’ saved [3735/3735]
해결했습니다. IPS에 새로 추가된 시그니처에서 차단했네요. 감사합니다.
1. 네트워크 설정 확인하신 후, kt dns(168.126.63.1)나 lg유플러스 dns(164.124.107.9) 등 외부 dns로 ping 테스트 해보세요. ping이 안되면 내부망, 외부망 연결 시 문제되는 부분을 해결하셔야 하고, ping은 되는데 yum 이 안되면 /etc/resolv.conf dns 서버 설정을 확인해보세요.
2. 제가 겪은 에러는 상단 IPS에서 신규 패턴이 추가되었는데, 그 패턴이 yum update를 막았습니다. 리눅스서버의 iptable이나 ipchain 설정도 보시고, 외부망 방화벽이나 IPS도 확인해보세요.