KVM基础8

2022-01-19 10:52:26 浏览数 (1)

修改默认运行级别

systemctl set-default multi-user.target 可以用来将默认(开机启动后)运行级别设定为3

代码语言：javascript复制
[root@docker ~]# ll /etc/systemd/system/default.target
lrwxrwxrwx. 1 root root 36 Feb 23 10:25 /etc/systemd/system/default.target -> /lib/systemd/system/graphical.target
[root@docker ~]# ll /lib/systemd/system/multi-user.target
-rw-r--r--. 1 root root 492 Nov 20 12:49 /lib/systemd/system/multi-user.target
[root@docker ~]# systemctl set-default multi-user.target
Removed symlink /etc/systemd/system/default.target.
Created symlink from /etc/systemd/system/default.target to /usr/lib/systemd/system/multi-user.target.
[root@docker ~]# ll /etc/systemd/system/default.target
lrwxrwxrwx. 1 root root 41 Feb 23 13:46 /etc/systemd/system/default.target -> /usr/lib/systemd/system/multi-user.target
[root@docker ~]# 
[root@docker ~]# runlevel 
N 5
[root@docker ~]#

切换当前的运行级别

代码语言：javascript复制
[root@docker ~]# runlevel 
N 5
[root@docker ~]# systemctl isolate multi-user.target
PolicyKit daemon disconnected from the bus.
We are no longer a registered authentication agent.
PolicyKit daemon reconnected to bus.
Attempting to re-register as an authentication agent.
We are now a registered authentication agent.
[root@docker ~]# 
[root@docker ~]# runlevel 
5 3
[root@docker ~]# systemctl get-default
multi-user.target
[root@docker ~]#

切换完当前运行级别后，图形界面会变成CLI界面

命令汇总

  • cat /etc/redhat-release
  • uname -a
  • egrep --color '(vmx|svm)' /proc/cpuinfo
  • yum grouplist
  • yum groupinfo Virtualization
  • yum groupinfo 'Virtualization Tools'
  • yum groupinfo 'Virtualization Client'
  • grep -v "^#" ifcfg-eth0
  • grep -v "^#" ifcfg-br0
  • /etc/init.d/network restart ; ifup br0
  • virt-manager
  • cat /etc/sysconfig/network-scripts/ifcfg-eth0
  • /etc/init.d/network restart
  • cat /etc/inittab
  • ll /lib/systemd/system/runlevel3.target
  • ll /lib/systemd/system/runlevel5.target
  • ll /lib/systemd/system/multi-user.target
  • systemctl set-default multi-user.target
  • ll /etc/systemd/system/default.target
  • systemctl isolate multi-user.target
  • runlevel
  • systemctl get-default

原文地址

yum grep

0 人点赞