linux怎么修改默认运行级别,CentOS7修改默认运行级别

在虚拟机新安装了个CentOS7，图形界面启动太慢，想调整一下按照以前的经验改运行级别，输入：

vi /etc/inittab

然后发现跟之前不一样了，在inittab设置不再生效：

# inittab is no longer used when using systemd.

#

# ADDING CONFIGURATION HERE WILL HAVE NO EFFECT ON YOUR SYSTEM.

#

# Ctrl-Alt-Delete is handled by /usr/lib/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

# graphical.target: analogous to runlevel 5

#

# To view current default target, run:

# systemctl get-default

#

# To set a default target, run:

# systemctl set-default TARGET.target

#

仔细读一下上面的提示

multi-user.target 类似与之前的runlevel 3

graphical.target 类似与之前的runlevel 5

按照上面的提示，查看当前的默认target输入命令：

[[email protected] ~]# systemctl get-default

graphical.target

[[email protected] ~]#

当前为graphical.target

修改为命令模式multi-user.target：

[[email protected] ~]# systemctl set-default multi-user.target

rm '/etc/systemd/system/default.target'

ln -s '/usr/lib/systemd/system/multi-user.target' '/etc/systemd/system/default.target'

[[email protected] ~]#

查看一下当前，发现得到预期要求：

[[email protected] ~]# systemctl get-default

multi-user.target

[[email protected] ~]#

最后重启发现，果然是命令模式~~