黑猴子的家：Linux Centos 安装图形化界面

Linux是一个多任务的多用户的操作系统，好多Linux爱好者在安装完Linux后经常遇到一个问题，没有图形化桌面（安装时默认最小化安装），不留神没有安装图形化桌面，下面分享一下安装图形化桌面的过程。

1、确认没有图形化界面

[root@hadoop102 ~]# startx

2、安装图形化界面

//安装图形化程序组
[root@hadoop102 ~]# yum -y groupinstall "Server with GUI"

//在终端运行命令安装X Window System
[root@hadoop102 ~]# yum -y groupinstall "X Window System"

//安装图形界面软件，GNOME(GNOME Desktop)
[root@hadoop102 ~]# yum -y groupinstall "GNOME Desktop" 

3、进入图形界面

[root@hadoop102 ~]# startx

4、安装中文支持

//安装中文语言包
[root@hadoop102 ~]# yum groupinstall "Chinese Support" -y

//修改系统默认语言为中文
[root@hadoop102 ~]# localectl set-locale LANG=zh_CN.UTF-8

5、设置默认运行级别为图形化

//查看默认运行级别
[root@localhost Desktop]# systemctl get-default
multi-user.target


[root@localhost Desktop]# cat /etc/inittab  
# inittab is no longer used when using systemd.  
#  
# ADDING CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.  
#  
# Ctrl-Alt-Delete is handled by /etc/systemd/system/ctrl-alt-del.target  
#  
# systemd uses 'targets' instead of runlevels. By default, there are two main targets:  
#  
# multi-user.target: analogous to runlevel 3               //运行级别3：多用户界面  
# graphical.target: analogous to runlevel 5                //运行级别5：图形化界面  
# # To set a default target, run: # # ln -sf /lib/systemd/system/.target  
  
/etc/systemd/system/default.target #  

 //设置默认图形化运行级别  
[root@localhost Desktop]# systemctl set-default graphical.target
rm '/etc/systemd/system/default.target'  
ln -s '/usr/lib/systemd/system/graphical.target' '/etc/systemd/system/default.target'  

//查看默认运行级别
[root@localhost Desktop]# systemctl get-default
//图形化设置OK  
graphical.target

1）查看默认的target 开机模式

[root@node1 opt]# systemctl get-default

2）开机以命令模式启动

[root@node1 opt]# systemctl set-default multi-user.target

3）开机以图形化界面启动

[root@node1 opt]# systemctl set-default graphical.target