CentOS 7 에서 필요한 패키지를 yum 으로 잘 설치를 했었는데, 어느날 아래와 같은 에러가 발생했다. # yum install expect Loaded plugins: fastestmirror base | 3.6 kB 00:00:00 dell-omsa-indep | 1.9 kB 00:00:00 dell-omsa-specific | 1.9 kB 00:00:00 Could not retrieve mirrorlist http://linux.dell.com/repo/hardware/DSU_15.10.00/mirrors.cgi?osname=el7&basearch=x86_64&native=1 error was 14: HTTPS Error 404 - Not Found http://linux.dell.com/r..
