centos 설치후 네트워크 설정 방법, network setup

yum update를 쳤더니 네트워크가 설정되어 있지않아서 다음과 같은 에러가 났다.

mirrorlist.centos.org unknown error

centos를 설치하면 네트워크 연결값이 disconnection 이기 때문,,,

우선 nmcli d 를 쳐본다.
: 시스템에 설치된 Ethernet cartd의 id를 알려준다.

Rather than make use of the hacking of a startx command into a .xinitrc file, it's probably better to tell Systemd that you want to boot into a graphical GUI vs. the terminal.

To accomplish this simply do the following:

$ sudo yum groupinstall "GNOME Desktop"
$ ln -sf /lib/systemd/system/runlevel5.target /etc/systemd/system/default.target

Then simply reboot.

The last bit will associate the runlevel 5 target as your default with respect to Systemd.

Doing it with Systemd

You can also use Systemd to accomplish this. This is arguably the better method since you're managing the state of the system directly through Systemd and its CLIs.

You can see what your current default target is:

$ sudo systemctl get-default
multi-user.target

And then change it to graphical:

$ sudo systemctl set-default
graphical.target

Targets

In Systemd the targets runlevel5.target and graphical.target are identical. So too are runlevel2.target and multi-user.target.

Runlevel    Target Units                          Description
0           runlevel0.target, poweroff.target     Shut down and power off the system.
1           runlevel1.target, rescue.target       Set up a rescue shell.
2           runlevel2.target, multi-user.target   Set up a non-graphical multi-user system.
3           runlevel3.target, multi-user.target   Set up a non-graphical multi-user system.
4           runlevel4.target, multi-user.target   Set up a non-graphical multi-user system.
5           runlevel5.target, graphical.target    Set up a graphical multi-user system.
6           runlevel6.target, reboot.target       Shut down and reboot the system.

References

• Install Gnome GUI on CentOS 7 / RHEL 7
• 8.3. WORKING WITH SYSTEMD TARGETS

출처:

http://unix.stackexchange.com/questions/181503/how-to-install-desktop-environments-on-centos-7