지원 종료된 CentOS 6 저장소(Repository) 설정하기

$ yum search gcc

Loaded plugins: changelog, fastestmirror, presto, refresh-packagekit, verify
Determining fastest mirrors
YumRepo Error: All mirror URLs are not using ftp, http[s] or file.
 Eg. Invalid release/repo/arch combination/
removing mirrorlist with no valid mirrors: /var/cache/yum/x86_64/6/base/mirrorlist.txt
Error: Cannot find a valid baseurl for repo: base

[main]
enabled=0
verbose=0
always_print_best_host = true
socket_timeout=3

[vault]
name=CentOS-$releasever - Vault
baseurl=http://vault.centos.org/centos/$releasever/os/$basearch/
enabled=1
gpgcheck=1

$ yum repolist

repo id                      repo name                                                                       status
remi-safe                    Safe Remi's RPM repository for Enterprise Linux 6 - x86_64                      2,973
vault                        CentOS-6 - Vault                                                                6,713

repolist: 9,686