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Installing the Graphical Window System (X.org-X11) and the Default Desktop Environment on CentOS 6
Performing the default "Minimal" install of CentOS 6 does not install the graphical subsystem (the X.org server) and the desktop environment (e.g. GNOME or KDE). Such OS install is nice for building an optimal system from scratch, setting up a headless server (no monitor, keyboard and mouse) and other purposes; but for one reason or another, you may still require a graphical...
Take a look at your ifcfg-ethX configuration file under /etc/sysconfig/network-scripts directory (substitute ethX with your network interface, e.g. eth0). In my case, "Minimal" install of CentOS 6 configured the ethernet interface not to start automatically (line ONBOOT="no") and to rely on NetworkManager (NM_Controlled="yes"). This is odd, as NetworkManager is not installed by default. Thus, even though the system is in runlevel 3 and you should have networking (if...
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