[root@yaya ~]# yum -y install gcc-* Loaded plugins: fastestmirror, presto Could not retrieve mirrorlist http://mirrorlist.centos.org/?release=6&arch=x86_64&repo=os error was 14: PYCURL ERROR 6 - "Couldn\'t resolve host \'mirrorlist.centos.org\'" Error: Cannot retrieve repository metadata (repomd.xml) for repository: base. Please verify its path and try again