白小姐彩图 www.5vq5o.cn 安装后,一开始有点儿无力吐槽的感觉,变化这么大?
一、Runlevel
首先一条,原来一直用的CentOS-6.5-x86_64-minimal.iso光盘镜像(400M左右无图形系统小巧便捷),而7目前最小的镜像是CentOS-7.0-1406-x86_64-livecd.iso(700M左右),默认安装后是启动图形界面,按原来的习惯要改成启动命令行,结果发现:
- [[email protected] ~]# 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
- # graphical.target: analogous to runlevel 5
- #
- # To set a default target, run:
- #
- # ln -sf /lib/systemd/system/<target name>.target /etc/systemd/system/default.target
- #
好吧,systemd一统天下了(它管的东西很多很多,学Centos7首先要搞定systemd)。
[[email protected] ~]# ls -Xl /etc/systemd/system/*.target lrwxrwxrwx. 1 root root 36 7月 8 23:12 /etc/systemd/system/default.target -> /lib/systemd/system/graphical.target
我们来看看从前的runlevel都变成什么样了?
- [[email protected] ~]# ls -Xl /lib/systemd/system
- [[email protected] ~]# ls -Xl /lib/systemd/system/runlevel*.target
- lrwxrwxrwx. 1 root root 15 7月 5 00:45 /lib/systemd/system/runlevel0.target -> poweroff.target
- lrwxrwxrwx. 1 root root 13 7月 5 00:45 /lib/systemd/system/runlevel1.target -> rescue.target
- lrwxrwxrwx. 1 root root 17 7月 5 00:45 /lib/systemd/system/runlevel2.target -> multi-user.target
- lrwxrwxrwx. 1 root root 17 7月 5 00:45 /lib/systemd/system/runlevel3.target -> multi-user.target
- lrwxrwxrwx. 1 root root 17 7月 5 00:45 /lib/systemd/system/runlevel4.target -> multi-user.target
- lrwxrwxrwx. 1 root root 16 7月 5 00:45 /lib/systemd/system/runlevel5.target -> graphical.target
- lrwxrwxrwx. 1 root root 13 7月 5 00:45 /lib/systemd/system/runlevel6.target -> reboot.target
修改默认启动runlevel为 multi-user (貌似runlevel2 3 4 没区别了)
[[email protected] ~]# ln -sf /lib/systemd/system/multi-user.target /etc/systemd/system/default.target [[email protected] ~]# ll -X /etc/systemd/system/*.target lrwxrwxrwx. 1 root root 37 7月 10 09:42 /etc/systemd/system/default.target -> /lib/systemd/system/multi-user.target
试试init 6 还好用不。
[[email protected] ~]# init 6 Connection to 192.168.150.180 closed by remote host. Connection to 192.168.150.180 closed.
成,好用。:)
因为我从桌面版Linux 连接Centos7系统提示变成了中文,所以需要把Centos7 的root用户语言改一下,回到原汁原味。
[[email protected] ~]# cp .bashrc .bashrc-back [[email protected] ~]# echo 'export LANG="en_Us.UTF-8"' >> /root/.bashrc
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